Chapter 08 WaterCity of Chanhassen 2040 Comprehensive Plan203
Chapter 8Water
City of Chanhassen 2040 Comprehensive Plan204
8.1 | Introduction
Current and projected growth and development in Chanhassen, has created a need for improvements to the water
system in order to meet anticipated water demands. The water distribution system has been expanded and improved
in the decade since the last comprehensive water plan was completed. Now, the water system can be re-evaluated in
light of recent improvements and the need for water system improvements can be re-evaluated. The updated water
system model can be used to analyze demands, available supply capacity and storage, and available flow rates and
pressures throughout the distribution system.
For this purpose, SEH has updated the city’s existing water system plan with water main, PRV, treatment and
storage improve-ments that have occurred since the last model update. Additionally, we have processed updated
demand data to geo-located water demands in the system so that they are modeled in the area of occurrence.
Furthermore, regions of future development expected to create additional system demands were identified with the
help of city staff, along with potential water system improvements that will allow the system to meet these expected
demands.
The computer model was updated using WaterGEMS v8i. The resulting product is a tool that can be used for hy-
draulic analysis of the water system and scenario planning. The model can also be built-upon in the future if so
desired to analyze water chemistry/water quality throughout the distribution system. In recent years, the city has
utilized the model as a valuable tool for:»Identification of future locations of critical supply and storage facilities so land can be purchased and/or set aside
before development begins in the designated area.
»Provide a long range plan for water system upgrades/expansion so that proposed construction projects include
properly sized water mains to allow for future development needs.
»Identify deficiencies in the water system and corresponding improvements to reduce or eliminate these deficiencies.
8.2 | Existing Facilities
The Chanhassen water system is composed of storage, supply, treatment and distribution components as described
in the following paragraphs. Storage, supply and treatment facilities are listed in the tables below.
Storage
Storage facilities on a water system allow a more constant supply during variable demand conditions. During
high demands when water customers are using a greater volume of water, part of that demand can be met by
storage reserves in addition to direct pumping from wells. During low demand conditions, the well pumps can
continue to operate with excess supply going to fill storage for later withdrawal.
In addition to this operational function, storage tanks can serve as an emergency water source in the case of a
supply failure (i.e. power outage, well maintenance, etc.); they also increase the amount of water available
during a fire; and they stabilize water system pressures.
8 | ComprehensiveWater System Plan
City of Chanhassen 2040 Comprehensive Plan205
Facility Pressure
Zone
Volume
(MG)
Useable
Volume
(MG)
Overflow
Elevation
(ft)
Style
Arboretum Low 1.50 1.50 1120
Fluted Column -
Elevated
Lake Lucy Low 3.50 1.75 1120
Steel-Ground
Storage Tank
Minnetonka Middle
School -West High 0.75 0.75 1200
Composite -
Elevated
East WTP Clearwell Low 0.20 0.20 NA Concrete -
Below Grade
Storage Capacity 5.95 4.20
Table 8.1 | Existing Water Storage Facilities
Source: City Records
Supply and Treatment
Raw (untreated) water is currently supplied to Chanhassen by means of 12 wells as listed in Table 8.2. These wells
utilize the Prairie Du Chien – Jordan aquifer with the exception of wells 5, 6 and 11, which draw water from the
glacial drift aquifer.
Of these 12 wells, seven pump into the east water treatment plant with the remainder pumping groundwater directly
into the distribution system. The treatment plant uses a gravity filtration process to remove iron and manganese from
the groundwater.
Of the wells pumping directly into the distribution system, wells 3, 15 and 9 pump into the main pressure zone,
while wells 7 and 8 pump into the high zone. These wells will eventually feed the new west water treatment plant.
Due to a reduction in capacity, wells 5 and 6 were deactivated in 2008 and are not included in the well summary.
The firm well pumping capacity is that which can be supplied reliably even during maintenance activities or an
emergency situation where the largest well pump might be out of service. This figure is often used for design and
planning purposes, since it represents a worst-case scenario. The total operational supply capacity for Chanhassen is
currently 10,600 gpm assuming the well capacities shown in Table 8.2 while the “firm” supply capacity is 9,350
gpm.
The east water treatment plant has a filtration capacity of 6,000 gpm as is noted in Table 8.3. There are four high
service pumps that draw from the clearwell at the treatment plant, each with a capacity of 2,000 gpm. Therefore, the
firm pumping capacity of the plant is 6,000 gpm.
City of Chanhassen 2040 Comprehensive Plan206
Table 8.2 | Existing Water Production Wells
Table 8.3 | Water Treatment Facilities
Well
Name
Pressure
Zone
Theoretical
Capacity
Operational
Capacity
(gpm)
Operational
Capacity
(MGD)
Treatment
Well 3 Main 1,000 800 1.2
Well 7 High 1,350 1,000 1.4
Well 8 High 1,300 1,000 1.4
Well 9 Main 1,000 750 1.1
Well 15 Main 1,100 1,000 1.4
Well 2 Main 1,000 700 1.0
Well 4 Main 1,100 850 1.2
Well 10 Main 1,200 700 1.0
Well 11 Main 500 100 0.1
Well 12 Main 1,450 1,250 1.8
Well 13 Main 1,400 1,200 1.7
Well 14 Main 1,450 1,250 1.8
Total Well Capacity 10,600 15.3
Firm Well Capacity 9,350 13.8
Total Treated Well Capacity 6,050 8.7
Firm Well Capacity (Treated)4,800 6.9
Treatment Capacity 6,000 8.6
Source: City Records
Source: City Records
Facility Pressure
Zone
Max.
Operational
Capacity
(gpm)
Max.
Operational
Capacity
(MGD)
East W ater Treatment Plant Main 6,000 8.6
W est W ater Treatment Plant Main 6,000 8.6
Anticipated Treatment Capacity 12,000 17.3
City of Chanhassen 2040 Comprehensive Plan207
Distribution System
The Chanhassen water system is comprised of water mains ranging in size from 6 inches to 24 inches in diameter.
The system has been designed with larger trunk main loops with smaller branch mains.
The system serves an elevation range of approximately 850 feet to 1080 feet. Pressures in the distribution system
are correlated with elevations with properties at higher elevations receiving lower pressure and vice-versa. Because
services at relatively high elevations have unacceptably low pressures when served by the low pressure zone, a high
pressure zone has been created in the northwestern part of the city, east of Lake Minnewashta. This pressure zone is
served by separate wells and a storage tank as discussed in the preceding sections.
Water from the high zone can also serve demand on the low zone by passing through pressure reducing valves
(PRVs) on the distribution system. These PRVs are shown in Appendix A - Figure 1. Under normal conditions, the
PRVs between the high and low pressure zone remain closed. Additional PRVs are located throughout the system
and maintain system pressure to the other low pressure zones. As noted earlier, areas of low land elevation have
higher pressures in relation to the existing water storage tanks. When pressures exceed 80-90 psi, it is recommended
to reduce these pressures to more usable levels. The Lake Riley, Inter Bluff and Lower bluff pressure zones are all
service areas with lower land elevations. These areas have PRVs regulating pressure within the zone. Some of the
pressure zones identified for future service have in ground vaults ready for installation of PRVs when additional
development requires. Table 8.4 below provides a list of existing system PRVs and their operational status.
Table 8.4 | Existing PRV Station
Facility
Inlet
Pressure
Zone/HGL
Outlet
Pressure
Zone
Number
of
Valves
Valve
Sizes
(dia.,inch)
Housing Status
Camden Low Inter Bluff 4.00 Concrete BG Active
HWY7 & 41 High Low 3.00 2,4,6 Active
101& 96th Low Inter Bluff 1.00 12 Not Active
Kiowa Low Lake Rielly 3.00 12,3,1.5 Concrete Active
Lyman &
Springfield Low Lake Rielly 1.00 12 Concrete Active
Monk Ct Low Lake Rielly 3.00 12,3,1.5 Concrete Active
Pioneer Pass Low Inter Bluff 1.00 12,3,1.5 Concrete Not Active
Powers Low Inter Bluff 1.00 12,3,1.5 Concrete Active
Foxwood Low Inter Bluff 1.00 12,3,1.5 Concrete Active
Source: City Records
8.3 | Current Water Demand Trends
Chanhassen water utility records indicate that in 2016 the average daily (AD) water demand for the complete system
was 2,570,000 gallons (1,783 gpm). The maximum day (MD) demand for 2016 was 6,200,000 gallons (4,328 gpm).
Table 8.5 presents water demands in Chanhassen from 2007 to 2016. The average day demands over this period are
also presented in graphical format in the Figure 8.1.
City of Chanhassen 2040 Comprehensive Plan208
Table 8.5 | Recent Historical Average Water Use
Average Day Water Sold Water Pumped
ResidentialCommercialIndustrialOtherTotalAverage Day Pumped(MGD)Per Capita Water Pumped(gpd)Unaccounted Water (%)2007 23,066 1.95 0.31 0.21 0.02 2.49 3.12 135.3 20%
2008 23,578 2.02 0.38 0.24 0.04 2.67 3.22 136.6 17%
2009 24,481 2.27 0.45 0.43 0.07 3.21 3.64 148.8 12%
2010 24,699 1.89 0.46 0.26 0.06 2.66 2.70 109.2 1%
2011 23,179 2.05 0.42 0.23 0.06 2.76 2.83 122.3 3%
2012 23,484 2.38 0.48 0.29 0.08 3.23 3.26 138.8 1%
2013 23,840 2.09 0.44 0.26 0.05 2.85 2.88 120.7 1%
2014 24,432 1.85 0.30 0.21 0.18 2.54 2.64 108.2 4%
2015 24,951 1.83 0.38 0.23 0.06 2.50 2.54 101.7 2%
2016 25,332 1.73 0.31 0.17 0.29 2.50 2.57 101.4 3%
Average 2.05 0.42 0.27 0.08 2.82 2.94 122.29 4%
Average Per
Capita Water
Use (gpd)
83.19 16.27 10.48 3.78 113.72
% of Total 73% 15% 10% 3%
Source: DNR Water Use Records, City RecordsYearPopulation
City of Chanhassen 2040 Comprehensive Plan209
Figure 8.1 | Recent Historical Average Water Use
0
5,000
10,000
15,000
20,000
25,000
30,000
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
19971998199920002001200220032004200520062007200820092010201120122013201420152016Average Day Demand (gpd)Year
8.4 | Peaking Demand Factors
Peaking factors are ratios to the average day demand rate which are used in analysis of water systems. They are
representative of temporal variation in water demands.
A maximum day peaking factor for a water system is the ratio of the MD demand rate to the AD demand rate. It
normally indicates the magnitude of seasonal differences in water demands. For example, if demands on a system
increase substantially during the summer due to lawn irrigation, the peaking factors will also be large. Typical MD
peaking factors range from 2.0 to 3.0.
Larger systems generally have lower maximum day peaking factors. However, predominantly residential municipal-
ities, especially in metropolitan areas, generally have higher peaking factors due to lawn irrigation demands. Recent
MD peaking factors for Chanhassen are shown in Table 8.6. From the peak demand information that was available,
it can be seen that the seasonal demand pattern in Chanhassen is within the typical range.
This historical information is useful, not only to assess the capacity of existing water system facilities, but also to an-
ticipate future needs. For future demand projections, a MD peaking factor of 3.1 was assumed in this report, which
was the highest of the previous fifteen years.Population
City of Chanhassen 2040 Comprehensive Plan210
Table 8.6 | Recent Historical Max Day Water Use and Peak Factors
Year Average
Day (MGD)
Maximum
Day (MGD)
Maximum
Day
(gpm)
Maximum Day
to Average
Day Ratio
(Peak Factor)
2002 2.4 5.1 3,527 2.2
2003 3.0 8.9 6,169 3.0
2004 2.6 5.9 4,093 2.2
2005 2.7 7.8 5,396 2.9
2006 3.2 9.8 6,803 3.1
2007 3.1 9.2 6,392 3.0
2008 3.2 8.5 5,926 2.7
2009 3.6 8.3 5,771 2.3
2010 2.7 6.4 4,410 2.4
2011 2.8 6.7 4,618 2.3
2012 3.3 7.9 5,503 2.4
2013 2.9 7.4 5,146 2.6
2014 2.6 7.2 4,979 2.7
2015 2.5 6.3 4,391 2.5
2016 2.6 6.2 4,328 2.4
15 Yr. Average 2.9 7.4 5,163 2.6
15 Yr. Max 3.6 9.8 6,802.8 3.1
Source: DNR Water Use Records, City Records
City of Chanhassen 2040 Comprehensive Plan211
Table 8.7 | Historical Average Day & Per Capita Water Use
Year Total
Population
Average Day
Water Pumped
(MGD)
Average Day per
capita Water
Use (gpd)
2000 20,321 2.4 119.6
2001 20,982 2.7 126.8
2002 21,561 2.4 109.0
2003 22,376 3.0 132.7
2004 23,431 2.6 112.7
2005 23,652 2.7 113.3
2006 23,864 3.2 132.0
2007 23,506 3.1 132.7
2008 23,153 3.2 139.1
2009 22,806 3.6 159.6
2010 22,952 2.7 117.2
2011 23,179 2.8 122.1
2012 23,484 3.3 138.8
2013 23,954 2.9 120.1
2014 24,388 2.6 108.4
*2015 25,194 2.5 100.7
*2016 25,194 2.6 101.9
5 Year Average 2.8 114.0
5 -Year Max 3.6 138.8
*State Demographer population estimate for 2015
Source: DNR Water Use Records, City Records
8.5 | Demand Distribution
Water demands are variable throughout the day and the year. On an annual basis, the heaviest demand conditions
(maximum day demands) occur during the summer, when residential irrigation and other outdoor water use activi-
ties increase.
Water demands also vary over the course of a given day. Figure 8.2 represents the results of typical hourly demand
distribution graph for total water use in the City of Chanhassen. This was calculated for a typical average day as well
as a maximum day. For comparison purposes, a typical curve developed by the America Water Works Association
(AWWA) for residential water use is also included on the graph as a reference. In general, commercial and industrial
water uses are typically more constrained and predictable.
City of Chanhassen 2040 Comprehensive Plan212
All three curves depict low water demand during the early morning periods. It shows increasing demand during
the day with a slight decrease in the late morning periods. By late afternoon, demands level off then increase again
during the evening hours, likely when residents are home and utilizing more water. As can be seen in the figure, for
the peak day data, the peak hour occurs earlier in the morning, this is likely due to automated irrigation within the
city for both commercial and residential customers.
As discussed briefly in Section 8.2, storage reservoirs are used to supplement the supply of treated water during
the peak usage hours within each day. During the early morning periods when demand is low, the system is able to
produce water in excess of the demand. This excess is used to fill the storage reservoirs.
When the demand rate exceeds the production rate, stored water in the reservoirs is used to make up for the deficit.
The storage reservoirs will start to fill when the demand decreases below the total supply capacity.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
110%
120%
130%
140%
150%
160%
170%
180%
190%
200%
210%
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25Demand %Hour
Typical Average Water Use Day - Chanhassen, MN Typical Water Peak Use Day - Chanhassen, MN AWWA
8.6 | Analysis of the Existing Water System
All utility-owned pipes 4 inches in diameter and larger were included in the computer model of the distribution sys-
tem. Water pumping records from 2016 were used to represent current demands on the system. Storage and supply
facilities were modeled based on specifications supplied by city staff. Additional calibration can be conducted in the
future, after construction of short-term water system improvements, to improve its accuracy for future use.
Figure 8.2 | Typical Hourly Demand
City of Chanhassen 2040 Comprehensive Plan213
System Pressure Calculations
Pressures in the future system under average day demands were calculated by the computer model. Due to the
elevation changes in Chanhassen and the creation of separate pressure zones, the pressures in the system are highly
variable. The model calculates pressures in the range of 40 – 110 psi throughout the existing water system.
Higher pressures exist on the southern and eastern parts of the distribution system, where elevations are relatively
low, with the exception of the reduced pressure zone around Lake Riley. In this zone, the pressure is maintained at a
lower level through the use of pressure reduction valves.
Industry standard recommends that the normal working pressure in water distribution systems be approximately in
the range of 50 to 80 psi and not less than 35 psi. In addition, pressures in excess of 100 psi in the distribution sys-
tem should be reuced by pressure reducing valves. The Minnesota Plumbing Code requires that building plumbing
systems not exceed 80 psi.
Many of the areas with pressures greater than 100 psi are localized on the system (they are limited to the fringes of
the existing distribution system). Expansion of the distribution system to the south will require the use of pressure
reducing valves as discussed later in this report. Where pressures exceed 80 psi, individual homes or businesses
should install pressure reducing valves on the service line near the entrance to the building, as recommended by the
Minnesota Plumbing Code.
Lake Lucy Road and Powers Boulevard – Analysis of Low Pressures During High Demand Conditions
As reported by city staff and mentioned in the previous comprehensive water plan, pressures in the area around the
Lake Lucy Reservoir are low during peak demands. This effect is also observed in the computer model. Areas of
relatively high elevations are present in the area. Elevations range from about 960 feet in the vicinity of the inter-
section of Lake Lucy Road and Powers Boulevard to approximately 1040 feet in certain locations. Most of the high
elevations are found on the south and east side of the intersection.
It appears from the computer modeling results that there are about 50 homes that may drop below 35 psi during high
demands when levels in the Lake Lucy Reservoir are low. If levels in the reservoir drop to 50% of capacity, that
cor-responds to a water elevation of 1105 feet (15 feet below overflow). At this level, any water service above an
eleva-tion of about 1024 feet would drop below 35 psi. As stated previously, industry standard recommends that
pressures remain about 35 psi under normal operating conditions, which includes periods of relatively high demand.
Since this is primarily an elevation issue, distribution system replacements or upgrades are not expected to have a
significant effect in improving pressures in the area. The following three options are presented here for dealing with
this pressure issue:
»Do nothing. The pressures do not appear to be critically low, and residents have adapted to conditions as they are.
»Install individual booster pumps on homes that require higher pressure.
»Create a small boosted pressure zone. A small booster station operating on a closed system is possible in the area. The city would
need to conduct a detailed study of the issue to determine the optimal way to create such a system while maintaining circulation
in the water system to prevent stagnation and the creation of dead ends that would limit fire protection capabilities.
City of Chanhassen 2040 Comprehensive Plan214
Pressure Zone Analysis
As part of the comprehensive water plan update, the establishment of the pressure zone boundaries was revisited.
Since the last comprehensive water plan was completed, pressure reducing valves/vaults have been installed as the
system has expanded, which in turn define the boundaries of the pressure zones. As the system evolves, it is gener-
ally a good idea to revisit the pressure zone development, identify potential changes and review improvements so
the ultimate system provided is optimized. For example, the previous plan identified potential options for definition
of the pressure zones. Now that a new water main has been installed and pressure reducing valve vaults have been
placed, this boundary had changed slightly. As part of this update, a system wide contour map was updated to show
parcels of land that can be served by the various pressure zones (see Appendix A - Figure A1).
The high and low pressure zones are defined by the elevated water storage tanks that exist in these zones, with HGL’s
of 1200 feet and 1120 feet respectively, these tanks maintain pressures of 40-80 psi to the majority of the service areas.
The boundary of the high pressure zone has been clearly defined and does not have a very high potential to be
changed or modified in the future. The low/main pressure zone, which is essentially the default pressure zone for
the majority of the system, serves the remaining areas with the exception of the Lake Riley Pressure zone which is
essentially a reduced pressure zone, served by PRVs from the main zone. In the past, this type of pressure zone had
issues with large changes in flow. For example, when hydrants are flowed in this zone and shut off, pressure tends to
bounce and transients are not very easily dissipated. This had resulted in water main breaks and water heater failure
in some homes.
In general, closed water pressure zones (without elevated storage or a standpipe) can experience difficulty with ma-
jor flow changes as water is not compressible. When a valve is suddenly shut off (or a PRV throttled back), the wa-
ter flowing in a corresponding pipe is suddenly forced to stop. Because of this, high pressure builds up immediately
behind the shut off valve and low pressure forms in front of it. The momentum of the water is suddenly transferred
into the physical system piping. As a result, a high-pressure region of water “piles up” in the pipe. This high pressure
region then travels back along the pipe in the form of a wave. The border of the high-pressure zone is referred to as
a pressure wave or transient. Such a pressure wave only exists for a short period of time, but can cause damage to
piping and fittings. Transients are not very well understood and are not always accounted for in the design of a water
distribution system.
A previous comprehensive water plan identified five potential alternate water pressure zones, with two of the zones
(Lake Riley and Interbluff) having similar hydraulic grade lines. In light of recent development and construction of
new PRV facilities, a new pressure zone configuration was developed. The primary goal of the pressures zone
restructuring was to sustain ideal pressures at all service elevations, simplify zone configurations and reduce the
number of PRVs required to sustain pressure.
Available Fire Flow
Available fire flows were calculated using the computer model with a residual pressure of 20 psi. According to
the American Water Works Association (AWWA), the minimum fire flow available at any given point in a system
should not be less than 500 gpm at a residual pressure of 20 psi. This minimum criterion represents the amount of
water required to provide for two standard hose streams on a fire in a typical residential area for residential dwell-
ings with spacing greater than 100 feet. The distance between buildings and the corresponding recommended fire
flow for residential areas is summarized in Table 8.8.
City of Chanhassen 2040 Comprehensive Plan215
Table 8.8 | Typical Fire Flow Requirements
Land Use
Building
Separation
(feet)
Available fire
flow @ 20 psi
(gpm)
Single & Two Family Residential >100 500
Single & Two Family Residential 30-100 750
Single & Two Family Residential 11-30 1,000
Single & Two Family Residential <10 1,500
Multiple Family Residential Complexes -2,000 to 3,000+
Average Density Commercial -1,500 to 2,500+
High Value Commercial -2,500 to 3,500+
Light Industrial -2,000 to 3,500
Heavy Industrial -2,500 to 3,500+
Source: Insurance Services Office
For commercial and industrial buildings, the needed fire flow rate varies considerably and is based on several
characteristics of individual buildings such as:
»Type of construction
»Type of business that is using the property (occupancy)
»Proximity and characteristics of nearby properties
»Presence or absence of a fire sprinkling system
While the fire flow requirements of commercial and industrial properties should be evaluated on a case-by-case
basis, a general rule of thumb is that a municipal water system should aim to provide 3,500 gpm to this type of land
use. The Insurance Services Office (ISO), in determining a City’s fire insurance classification, only considers flow
rates up to 3,500 gpm.
Available fire flows throughout the Chanhassen water system are highly variable due primarily to topographical
changes. Available flow rates in the model range from about 500 gpm in some locations to greater than 5,000 gpm
in others. Areas of potential concern include commercial, industrial or high-density residential land uses where the
available flow rate at the water main is less than 3,500 gpm. The previous comprehensive water plan identified three
distinct locations that had less than desirable available fire flow, as calculated by the water model. Since the previ-
ous evaluation, improvements to the water system, including a new water tower have strengthened the water system.
Subsequently, the areas of concern in relation to limited fire flow have been remedied. In short, major fire flow
deficiencies were not identified as part of this analysis. However, this evaluation is not intended as a comprehensive
building by building fire flow analysis, rather a comparison of computer modeling results with land uses across the
existing water distribution system.
8.7 | Analysis of the Existing Water System
Future sales and pumpage projections can be based on assumptions of water demands that can be expected accord-
ing to future land use or population data. Two different means for water use demand projections are documented and
compared below.
City of Chanhassen 2040 Comprehensive Plan216
Projected Water Demands - By Projected Population
Previously in this report, per capita average day water use was calculated. The maximum for this figure for the past
5 years was found to be 139 gallons per day per person. This figure was then multiplied by projected population
data. The resulting projected water average and max day demand data is shown below in Table 8.9.
Table 8.9 | Projected Water Consumption - By Population
Year
Population
Average
Day Per
Capita
Water
Pumped
(gal)
Average
Day
Water
Pumped
(MGD)
Maximum
Day to
Average
Day Ratio
Projected
Maximum
Day
Water
Demand
(MGD)
Projected
Maximum
Day
Water
Demand
(gpm)
Projected
Main Zone
Maximum
Day Water
Demand
(gpm)
Projected
High Zone
Maximum
Day Water
Demand
(gpm)
2015 24,655 3.4 10.6 7,389 6,429 961
2020 26,700 3.7 11.5 8,002 6,962 1,040
2025 29,200 4.1 12.6 8,752 7,614 1,138
2030 31,700 4.4 13.7 9,501 8,266 1,235
2035 34,400 4.8 14.8 10,310 8,970 1,340
2040 37,100 5.1 16.0 11,119 9,674 1,446
Source: DNR Water Use Records, State demographer, Met Council Thrive 2040 Forecast
Projected Water System Demands - By Future Land Use
The city’s comprehensive plan developed a projected land use map. This map provides for an assumption of future
land uses for planning purposes. This projected map also provides for an opportunity to compare the change in land
use acreage from exiting uses to projected uses. This information can then be utilized to estimate future water usage
based on associated land use changes. Table 8.10 below documents land use changes estimated in the city’s most
recent comprehensive plan and equated existing average day water use to existing land use. The estimate of average
day water use per acre developed from historical data is then applied to future land use estimates.
City of Chanhassen 2040 Comprehensive Plan217
Table 8.10 | Projected Additional Water Consumption - Future Land Use
Upper Main Pressure Zone Development
Land use Total Acres
Res.
Units
per Acre
Units
Pers.
per
Unit
Demand
per
Person
(gpd)
Demand
per Acre
(gpd)
Projected
AD
Demand
(gpd)
Projected
AD
Demand
(MGD)
Projected
MD
Demand
(MGD)
Residential
Medium Density
(RMD)
260.0 8 2.5 100 2,000 390,000 0.39 1.2
Residential Large
Lot (RLL)120.0 0.4 2.5 100 100 9,000 0.01 0.0
Residential Low
Density (RLD)680.0 4 2.5 100 1,000 510,000 0.51 1.6
Residential High
Density (RHD)40.0 16 2.5 100 4,000 120,000 0.12 0.4
Office / Industrial 200.0 2,000 300,000 0.30 0.9
Office 60.0 2,000 90,000 0.09 0.3
Mixed Use 21.5 3,000 48,285 0.05 0.1
Commercial 0.9 2,000 1,380 0.00 0.0
Existing
Residential to
Connect to W ater
System (REX)
0.0 411 2.5 100 102,750 0.10 0.3
Totals for Upper Main Zone 1,571,415 1.6 4.9
Low Area Planned Development
Land Use
Total
Developable
Acres
Res.
Units
per Acre
Units
Pers.
per
Unit
Demand
per
Person
(gpd)
Demand
per Acre
(gpd)
Projected
AD
Demand
(gpd)
Projected
AD
Demand
(MGD)
Projected
MD
Demand
(MGD)
Residential Large
Lot (RRL)78 2.5 100 19,500 0.02 0.1
Residential Low
Density (RLD)39 2.5 100 9,750 0.01 0.0
Residential Low
Density (RLD)162 2 2.5 100 500 81,000 0.08 0.3
Residential High
Density (RHD)33.2 12 2.5 100 3,000 99,600 0.10 0.3
Office 53.4 1,500 80,100 0.08 0.2
Office Industrial 61 1,500 91,500 0.09 0.3
*Existing Gedney
Demands 180,000 0.18 0.6
Totals for Low Area 561,450 0.56 1.74
Totals for Main Pressure Zone 2,132,865 2.13 6.61
High Zone Planned Development
Land use Total Acres
Res.
Units
per Acre
Units
Pers.
per
Unit
Demand
per
Person
(gpd)
Demand
per
Acre(gpd)
Projected
AD
Demand
(gpd)
Projected
AD
Demand
(MGD)
Projected
MD
Demand
(MGD)
Residential Low
Density (RMD)40 4 2.5 125 50,000 0.05 0.2
Residential Med
Density (RMD)19 8 2.5 125 47,500 0.05 0.1
Existing
Residential Lots 49 2.5 125 15,313 0.02 0.0
Totals for High Zone 112,813 0.11 0.35
Total System (Additional Demand)2,245,678 2.25 6.96
City of Chanhassen 2040 Comprehensive Plan218
Table 8.11 | Projected Water Consumption - By Land Use
Area
Existing
Average
Day (MGD)
Future
Land Use
Average
Day (MGD)
Projected
Maximum
Day Water
Use (MGD)
Projected
Maximum
Day Water
Use (gpm)
Main Pressure
Zone 2.50 2.13 14.37 9,982
High Pressure
Zone 0.37 0.11 1.95 1,353
Total 2.88 2.25 16.32 11,335
Existing AD calculated from current 6-year average, Peak factor= 3.1 for main zone,
4.0 for high pressure zone, See table 8.10 for calculations
8.7 | Future Water System Facilities
The city is currently planning the construction of new water system facilities to accommodate future water
needs. In addition to normal water uses, system facilities are often sized for fire protection needs, including
addi-tional storage facilities, water tanks and supply.
Facilities (wells and a future west water treatment plant) and water mains are planned to expand and improve
water delivery. The following sections of this report discuss the estimated need for future water system facilities,
based on the demand projections presented in Table 8.11.
Future Distribution System
In Appendix A - Figure 7, a proposed trunk water main layout has been drawn as part of the future water sys-
tem vision. The future mains include 12-inch loops helping to balance the future water system by allowing large
volumes of water to flow between supply, storage and points of use. These trunk main loops will be required to
effectively transport water to the extremities of the proposed expansion areas. Looping is recommended wherev-
er possible to minimize dead-ends in the water system.
Dead-ends or branched water systems are less reliable since water must come from one direction. This forces the
utility to shut off water to some customers during repairs or maintenance. In addition, larger head losses (or pressure
losses) are experienced on dead-ends than on looped systems. This can limit available flow rates during fire protec-
tion activities.
In addition to future system improvements, the existing system could be improved by eliminating dead ends that
are relatively long or less than 8 inches in diameter. This work should be coordinated with future street replacement
projects to reduce costs where possible.
Due to the fact that much of the future service area on the south end of the city already contains residential devel-
opment, it is difficult to provide trunk main looping to serve the proposed developments on the far south end of the
future service area, such as those proposed between the Hennepin County Regional Trail Corridor and Flying Cloud
Drive. The proposed distribution system serves these developments using long dead end mains for this reason.
If possible, the city should consider looping these segments to improve system hydraulics. A connection may be
possible on the eastern extent of the future main shown on Flying Cloud Drive to the proposed 12-inch main on
Deerbrook Drive.
City of Chanhassen 2040 Comprehensive Plan219
Pressure Zones
The Chanhassen water distribution system serves a range of elevations that prevents the entire system from being
served on a single pressure zone. In order to keep pressures at acceptable levels throughout the system, there are
currently three separate pressure zones in the system. The pressure zones are defined by different hydraulic grade,
which allows pressures to remain in a more acceptable range. The pressure zone boundaries are shown on Appendix
A - Figure 2.
As part of the water comprehensive plan update, a review of the pressure zone boundaries was completed by ana-
lyzing citywide land elevations with resulting reasonable pressures within each defined pressure zone. The result of
this analysis is shown in Appendix A. In short, the current pressure zone plan could be optimized to simplify oper-
ations. The map shown in Appendix A, Figure 8 is defined to show which pressure zone would be best suited to
serve varying land elevations. In those areas that may have standard operating pressures that fall out of tolerance,
individual PRVs could be installed if the water pressure in the street exceeds 80 psi.
The largest zone is the low pressure zone, which is currently served by the east water treatment plant; wells 3, 4 and
9; and the Lake Lucy and Arboretum storage tanks. The hydraulic grade of this zone is determined by an overflow
elevation of 1120 feet for the storage tanks.
The high pressure zone is located roughly between Hazeltine Blvd. and Galpin Blvd., north of Arboretum Blvd. This
zone is currently served by wells 7 and 8 and an elevated storage tank, Melody Hill, which has an overflow eleva-
tion of 1200 feet.
Future developments on the south end of town are at relatively low elevation compared with the rest of the city. As
the distribution system expands into this area, the water pressure in the mains will need to be reduced through the
use of pressure reducing valves, similar to the way in which the Lake Riley Pressure Zone is currently served.
In light of recent development and construction of new PRV facilities, a new pressure zone configuration was de-
veloped. The primary goal of the pressures zone restructuring was to sustain ideal pressures at all service elevations,
simplify zone configurations and reduce the number of PRVs required.
In the future, it appears that the existing Lake Riley Pressure Zone could be merged with the Interbluff Pressure
Zone and served by a single elevated storage tank. Not only would this simplify system operations and reduce the
reliance on PRV stations, but pressures in these zones would be sustained by a storage vessel which would ease
pressure transients and better serve major changes in flow, reducing the possibility of pressure spikes. Appendix
A - Figure 7, represents a potential location for an elevated storage tank for the new combined Interbluff/Lake Riley
Pressure Zone.
Future Supply Facilities
Firm supply capacity, which is the amount of water that can be reliably supplied with the largest well out of service,
should be greater than or equal to the maximum day demand. When projected maximum day demands reach firm
capacity, it is an indication that additional water supply capacity is needed.
The projected 2040 maximum day demand for Chanhassen is approximately 11,120 (16.0 MGD) gpm. As men-
tioned in previous studies, the city should plan to serve the maximum day demand with firm capacity, defined here
as the supply capacity with the largest distribution system well out of service and the largest well supplying the east
water treatment plant out of service.
City of Chanhassen 2040 Comprehensive Plan220
The total system capacity with wells 2, 3, 4, 7, 8, 9, 10, 12, 13 and 14 will be 8,850 gpm. The firm capacity will be
7,450 gpm. To meet ultimate demand projections, there will be a well capacity need of approximately 3,700 (11,120
gpm – 7,450). Based on previous well capacities, that will equate to four additional wells to meet projected maxi-
mum day demands. It is suggested that three additional wells serve the future west water plant while one additional
well should be constructed to serve the east water treatment plant.
Table 8.12 | Future Water System Supply Needs
Year
Maximum Day
Water Pumped
(MGD)
Existing
Firm
Supply
Capacity
(MGD)
Additional
Supply
Capacity
Recommended
(MGD)
Additional
Supply
Capacity
Recommended
(gpm)
Existing 5
Year
Average
7.0 0.0 0
2020 11.5 0.8 552
2025 12.6 1.9 1,302
2030 13.7 3.0 2,051
2035 14.8 4.1 2,860
2040 16.0 5.3 3,669
10.7
Source: DNR Water Use Records, State demographer
Future Storage Facilities
In order to determine the water storage needs of a community, average daily demands, peak demands and emergen-
cy needs must be considered. For many communities, fire protection needs tend to be the controlling factor when
calculating needed storage volume. Table 8.13 shows the calculations used to determine future water storage volume
requirements for the total system in Chanhassen. These calculations consider ultimate development of the proposed
expansion areas.
Water storage facilities should be able to supply the desired rate of fire flow for the required length of time during
peak demands, when the water system is already impacted by other uses and with the largest pump out of service.
The calculations in Table 8.13 assume that 75% of storage volume is available for firefighting, maximum day de-
mands are occurring on the system and the well with the greatest capacity is out of service.
It appears, based on the demand projections used here, that Chanhassen will need about 1.0 million gallons of future
additional storage for the system as a whole.
There is a trade-off between storage volume for fire protection and water quality. If the storage volume becomes
too much greater than average day demands, it can result in longer tank residence times and increased water
age. With age, water can lose its chlorine residual and develop taste and odor problems as well as a potential for
bacterial contamination.
City of Chanhassen 2040 Comprehensive Plan221
Previously, 750,000 gallons of elevated storage was recommended for the high zone. Since this recommendation
was made, the new 750,000 gallon tank has been constructed.
With this tank in place, the projected additional storage need for the water system as a whole is around 1.0MG,
which could be constructed in the main zone or as discussed later, in the proposed combine Interbluff Zone.
Proposed locations for the future 1.0 MG tank is shown in Appendix A - Figure 7.
Existing
System
2030
Projection
2040
Projection
Average Day Demand 2,568,510 4,399,370 5,148,790
Maximum Day Demand 6,232,000 13,638,048 15,961,249
Maximum Day Demand (gpm)4,328 9,471 11,084
Peak Hour Demand (gpm)8,439 16,100 18,843
Existing Storage Volume (gal)4,200,000 4,200,000 4,200,000
Well Pump Firm Capacity (gpm)7,450 7,450 7,450
Requirement No.1 Storage Volume
Recommended (Min. Total Storage) (gal)2,568,510 4,399,370 5,148,790
Requirement No.2 Storage Volume
Recommended (Min. Total Storage) (gal)1,973,467 3,182,211 3,724,291
Requirement No.3 Storage Volume
Recommended (Min. Elevated Storage) (gal)68,000 994,000 1,284,000
Additional Storage Required (gallons)(1,630,000)200,000 900,000
Assumes Supply Remains Constant
Table 8.13 | Complete System Water Storage Requirements
8.8 | Analysis of the Proposed System Layout
The computer model of the distribution system was used to calculate pressures and available fire flows as was
done previously for the existing system. Much of the new development is expected to the south of the existing
water system, where elevations decrease as discussed in previously sections. When PRVs are set in the model to
correspond to the recommended hydraulic grades and are located as shown in Appendix A - Figure 7, pressures
and available flows for fire protection appear to be adequate to support the proposed land uses, based on the
criteria presented in Section 8.4.
Extended Period Simulation
As part of the previous comprehensive plan, an extended period simulation (EPS) was conducted using the
model to analyze system operations during several days of maximum day demands. The primary purpose of this
simulation was to check for cumulative system imbalances that are not evident in standard simulations and to
verify if system operations can be maintained under high demand conditions.
The locations of supply and storage facilities and the sizes of distribution system pipes contribute to imbalances.
Considerable distances between supply and storage locations and inadequately sized water mains can contribute
to a reduced storage-replenishment rate and the inability to refill the towers at night during low demand periods.
Once again, we have conducted a 72-hour water model simulation to review the possible water tower site A loca-
tion. We have simulated a 72-hour period with three consecutive maximum day (MD) demand conditions. This
time period was chosen since most supply and distribution system deficiencies will be exposed in three days of
operations with MD demands. For example, if tanks are unable to refill daily under high demand conditions, a
City of Chanhassen 2040 Comprehensive Plan222
trend will emerge in tank level data produced by the EPS.
The model was simulated with a new tank located at site A, feeding the combined Interbluff/Lake Riley zone. The
simulation found that it is feasible to sustain water system pressures with this type of configuration. The existing
main pressure zone tanks operate and float at similar water levels/water elevations while the proposed tank sustains
more consistent pressures in the lower pressure zone.
8.9 | Conclusions and Recommendations
Supply Environments
Firm supply capacity (the supply capacity with the largest pump out of service) should be greater than maximum
day demands. The city is currently in the midst of constructing the west water treatment plant, which is estimated
to have a capacity equal to the recently constructed east water treatment plant (6,000 gpm). In order to fully utilize
these two plants, it is estimated that four new wells will be necessary during the life of this plan to meet projected
water demands based on projected development in the city.
Distribution System Improvements
Trunk main looping should be a priority in the expansion of the service area and in water main replacement projects.
The proposed layout of trunk water mains in this report would provide water supply and fire protection capabilities
to existing and projected service areas. In addition, recommended trunk mains will connect water supply and storage
facilities with points of use on the system.
The city can also work towards the eventual combination of the Lake Riley and Interbluff pressure zones, which
may be the most ideal location for a new elevated storage tank.
Storage Improvements
The volume of water storage needed in Chanhassen is dictated by daily demands as well as fire protection. Current-
ly, storage capacity is meeting system needs. Projected demands will create a need for one additional 1.0 MG
elevated water storage tank over the life of this plan. A new concept, which places a new tank in the combined Lake
Riley/Interbluff lower pressure zone which will help supply these pressure zones with water as well as stabilize
system pressures.
Report and Model Update
This report should be reviewed on an annual basis. Changes in development type or densities can have significant
impacts on a water system’s performance, especially during drought conditions or emergencies such as fires. A re-
port update should be planned for approximately 5 to 10 years dependent on development pressure.
The water system model produced as part of this project is a valuable tool in assisting with design and construction
of Chanhassen water system components. It can be easily updated on an annual basis and used to evaluate the im-
pacts of proposed developments or project phasing. A copy of the computer model will be provided to the city.
City of Chanhassen 2040 Comprehensive Plan223
APPENDIX A |
City of Chanhassen 2040 Comprehensive Plan224
City of Chanhassen 2040 Comprehensive Plan225
City of Chanhassen 2040 Comprehensive Plan226
City of Chanhassen 2040 Comprehensive Plan227
City of Chanhassen 2040 Comprehensive Plan228
City of Chanhassen 2040 Comprehensive Plan229
City of Chanhassen 2040 Comprehensive Plan230
City of Chanhassen 2040 Comprehensive Plan231
City of Chanhassen 2040 Comprehensive Plan232
City of Chanhassen 2040 Comprehensive Plan233
City of Chanhassen 2040 Comprehensive Plan234
APPENDIX B | Local Water Supply Plan Template
City of Chanhassen 2040 Comprehensive Plan235
Local Water Supply Plan
1
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Local Water Supply Plan Template Third Generation for 2016-2018
Formerly called Water Emergency & Water Conservation Plan
City of Chanhassen 2040 Comprehensive Plan236
Local Water Supply Plan
2
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Cover photo by Molly Shodeen
For more information on this Water Supply Plan Template, please contact the DNR Division of Ecological
and Water Resources at (651) 259-5034 or (651) 259-5100.
Copyright 2015 State of Minnesota, Department of Natural Resources
This information is available in an alternative format upon request.
Equal opportunity to participate in and benefit from programs of the Minnesota Department of Natural
Resources is available to all individuals regardless of race, color, creed, religion, national origin, sex,
marital status, public assistance status, age, sexual orientation, disability or activity on behalf of a local
human rights commission. Discrimination inquiries should be sent to Minnesota DNR, 500 Lafayette
Road, St. Paul, MN 55155-4049; or the Equal Opportunity Office, Department of the Interior,
Washington, DC 20240.
City of Chanhassen 2040 Comprehensive Plan237
Local Water Supply Plan
3
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Table of contents
INTRODUCTION TO WATER SUPPLY PLANS (WSP).............................................................6
Who needs to complete a Water Supply Plan .......................................................................................... 6
Groundwater Management Areas (GWMA) ............................................................................................. 6
Benefits of completing a WSP ................................................................................................................... 6
WSP Approval Process .............................................................................................................................. 7
PART 1. WATER SUPPLY SYSTEM DESCRIPTION AND EVALUATION ................................9
A.Analysis of Water Demand................................................................................................................ 9
B.Treatment and Storage Capacity .................................................................................................... 11
Treatment and storage capacity versus demand ................................................................13
C.Water Sources ................................................................................................................................. 13
Limits on Emergency Interconnections...............................................................................14
D.Future Demand Projections – Key Metropolitan Council Benchmark ............................................ 14
Water Use Trends ..............................................................................................................14
Projection Method ..............................................................................................................15
E.Resource Sustainability ................................................................................................................... 16
Monitoring –Key DNR Benchmark ....................................................................................16
Water Level Data ...............................................................................................................18
Potential Water Supply Issues & Natural Resource Impacts –Key DNR & Metropolitan
Council Benchmark ............................................................................................................24
Wellhead Protection (WHP) and Source Water Protection (SWP) Plans ............................28
F.Capital Improvement Plan (CIP) ...................................................................................................... 28
Adequacy of Water Supply System ....................................................................................28
Proposed Future Water Sources ........................................................................................30
Part 2. Emergency Preparedness Procedures ..........................................................................31
A.Federal Emergency Response Plan ................................................................................................. 31
B.Operational Contingency Plan ........................................................................................................ 31
C.Emergency Response Procedures ................................................................................................... 31
Emergency Telephone List ................................................................................................32
City of Chanhassen 2040 Comprehensive Plan238
Local Water Supply Plan
4
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Current Water Sources and Service Area ..........................................................................32
Procedure for Augmenting Water Supplies ........................................................................32
Allocation and Demand Reduction Procedures ..................................................................33
Notification Procedures ......................................................................................................35
Enforcement ......................................................................................................................36
PART 3. WATER CONSERVATION PLAN ...............................................................................37
Progress since 2006 ................................................................................................................................ 37
A.Triggers for Allocation and Demand Reduction Actions ................................................................. 39
B.Conservation Objectives and Strategies – Key benchmark for DNR ............................................... 40
Objective 1: Reduce Unaccounted (Non-Revenue) Water loss to Less than 10%..............40
Objective 2: Achieve Less than 75 Residential Gallons per Capita Demand (GPCD).........41
Objective 3: Achieve at least a 1.5% per year water reduction for Institutional, Industrial,
Commercial, and Agricultural GPCD over the next 10 years or a 15% reduction in ten
years..................................................................................................................................43
Objective 4: Achieve a Decreasing Trend in Total Per Capita Demand ..............................44
Objective 5: Reduce Peak Day Demand so that the Ratio of Average Maximum day to the
Average Day is less than 2.6..............................................................................................44
Objective 6: Implement a Conservation Water Rate Structure and/or a Uniform Rate
Structure with a Water Conservation Program ...................................................................45
Objective 7: Additional strategies to Reduce Water Use and Support Wellhead Protection
Planning .............................................................................................................................48
Objective 8: Tracking Success: How will you track or measure success through the next ten
years?................................................................................................................................48
A.Regulation ....................................................................................................................................... 49
B.Retrofitting Programs ..................................................................................................................... 50
Retrofitting Programs .........................................................................................................50
C.Education and Information Programs ............................................................................................. 51
Proposed Education Programs ..........................................................................................51
Part 4. ITEMS FOR METROPOLITAN AREA COMMUNITIES .................................................55
A.Water Demand Projections through 2040 ...................................................................................... 55
City of Chanhassen 2040 Comprehensive Plan239
Local Water Supply Plan
5
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
B.Potential Water Supply Issues ........................................................................................................ 55
C.Proposed Alternative Approaches to Meet Extended Water Demand Projections ....................... 55
D.Value-Added Water Supply Planning Efforts (Optional) ................................................................. 56
Source Water Protection Strategies ...................................................................................56
Technical assistance..........................................................................................................56
GLOSSARY ..............................................................................................................................57
Acronyms and Initialisms ........................................................................................................................ 60
APPENDICES TO BE SUBMITTED BY THE WATER SUPPLIER .............Error! Bookmark not
defined.
Appendix 1: Well records and maintenance summaries – see Part 1C .... Error! Bookmark not defined.
Appendix 2: Water level monitoring plan – see Part 1E ........................... Error! Bookmark not defined.
Appendix 3: Water level graphs for each water supply well - see Part 1E Error! Bookmark not defined.
Appendix 4: Capital Improvement Plan - see Part 1E ................................ Error! Bookmark not defined.
Appendix 5: Emergency Telephone List – see Part 2C .............................. Error! Bookmark not defined.
Appendix 6: Cooperative Agreements for Emergency Services – see Part 2C ......... Error! Bookmark not
defined.
Appendix 7: Municipal Critical Water Deficiency Ordinance – see Part 2CError! Bookmark not defined.
Appendix 8: Graph showing annual per capita water demand for each customer category during the
last ten-years – see Part 3 Objective 4....................................................... Error! Bookmark not defined.
Appendix 9: Water Rate Structure – see Part 3 Objective 6 ..................... Error! Bookmark not defined.
Appendix 10: Adopted or proposed regulations to reduce demand or improve water efficiency – see
Part 3 Objective 7 ....................................................................................... Error! Bookmark not defined.
Appendix 11: Implementation Checklist – summary of all the actions that a community is doing, or
proposes to do, including estimated implementation dates – see www.mndnr.gov/watersupplyplans
................................................................................................................... Error! Bookmark not defined.
City of Chanhassen 2040 Comprehensive Plan240
Local Water Supply Plan
6
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
DEPARTMENT OF NATURAL RESOURCES – DIVISION OF ECOLOGICAL AND WATER RESOURCES AND METROPOLITAN COUNCIL
INTRODUCTION TO WATER SUPPLY PLANS (WSP)
Who needs to complete a Water Supply Plan
Public water suppliers serving more than 1,000 people, and large private water suppliers in designated
Groundwater Management Areas, and all water suppliers in the Twin Cities metropolitan area, are
required to prepare and submit a water supply plan.
The goal of the WSP is to help water suppliers: 1) implement long term water sustainability and
conservation measures; and 2) develop critical emergency preparedness measures. Your community
needs to know what measures will be implemented in case of a water crisis. A lot of emergencies can be
avoided or mitigated if long term sustainability measures are implemented.
Groundwater Management Areas (GWMA)
The DNR has designated three areas of the state as Groundwater Management Areas (GWMA) to focus
groundwater management efforts in specific geographies where there is an added risk of overuse or
water quality degradation. A plan directing the DNR’s actions within each GWMA has been prepared.
Although there are no specific additional requirements with respect to the water supply planning for
communities within designated GWMA, communities should be aware of the issues and actions planned
if they are within the boundary of one of the GWMA. The three GWMA are the North and East Metro
GWMA (Twin Cities Metro), the Bonanza Valley GWMA and the Straight River GWMA (near Park Rapids).
Additional information and maps are included in the DNR webpage at
http://www.dnr.state.mn.us/gwmp/areas.html
Benefits of completing a WSP
Completing a WSP using this template, fulfills a water supplier’s statutory obligations under M.S.
M.S.103G.291 to complete a water supply plan. For water suppliers in the metropolitan area, the WSP
will help local governmental units to fulfill their requirements under M.S. 473.859 to complete a local
comprehensive plan. Additional benefits of completing WSP template:
•The standardized format allows for quicker and easier review and approval.
•Help water suppliers prepare for droughts and water emergencies.
•Create eligibility for funding requests to the Minnesota Department of Health (MDH) for the
Drinking Water Revolving Fund.
•Allow water suppliers to submit requests for new wells or expanded capacity of existing wells.
•Simplify the development of county comprehensive water plans and watershed plans.
•Fulfill the contingency plan provisions required in the MDH wellhead protection and surface
water protection plans.
•Fulfill the demand reduction requirements of Minnesota Statutes, Section 103G.291 Subd. 3
and 4.
City of Chanhassen 2040 Comprehensive Plan241
Local Water Supply Plan
7
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
•Upon implementation, contribute to maintaining aquifer levels, reducing potential well
interference and water use conflicts, and reducing the need to drill new wells or expand
system capacity.
•Enable DNR to compile and analyze water use and conservation data to help guide decisions.
•Conserve Minnesota’s water resources.
If your community needs assistance completing the Water Supply Plan, assistance is available from your
area hydrologist or groundwater specialist, the MN Rural Waters Association circuit rider program, or in
the metropolitan area from Metropolitan Council staff. Many private consultants are also available.
WSP Approval Process
10 Basic Steps for completing a 10-Year Water Supply Plan
1.Download the DNR/Metropolitan Council Water Supply Plan Template
www.mndnr.gov/watersupplyplans
2.Save the document with a file name with this naming convention:
WSP_cityname_permitnumber_date.doc.
3.The template is a form that should be completed electronically.
4.Compile the required water use data (Part 1) and emergency procedures information (Part 2).
5.The Water Conservation section (Part 3) may need discussion with the water department,
council, or planning commission, if your community does not already have an active water
conservation program.
6.Communities in the seven-county Twin Cities metropolitan area should complete all the
information discussed in Part 4. The Metropolitan Council has additional guidance information
on their webpage http://www.metrocouncil.org/Handbook/Plan-Elements/Water-
Resources/Water-Supply.aspx. All out-state water suppliers do not need to complete the
content addressed in Part 4.
7.Use the Plan instructions and Checklist document to insure all data is complete and attachments
are included. This will allow for a quicker approval process. www.mndnr.gov/watersupplyplans
8.Plans should be submitted electronically – no paper documents are required.
https://webapps11.dnr.state.mn.us/mpars/public/authentication/login
9.DNR hydrologist will review plans (in cooperation with Metropolitan Council in Metro area) and
approve the plan or make recommendations.
10.Once approved, communities should complete a Certification of Adoption form, and send a copy
to the DNR.
City of Chanhassen 2040 Comprehensive Plan242
Local Water Supply Plan
8
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Complete Table 1 with information about the public water supply system covered by this WSP.
Table 1. General Information Regarding This WSP
Requested Information Description
DNR Water Appropriation Permit Number(s) 1981-6089
Ownership Public
Metropolitan Council Area Yes – Carver and Hennepin Counties
Street Address 7901 Park Place
City, State, Zip Chanhassen, MN, 55317
Contact Person Name Kevin Crooks
Title Utility Superintendent
Phone Number 952-227-1300
MDH Supplier Classification Municipal
City of Chanhassen 2040 Comprehensive Plan243
Local Water Supply Plan
9
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
PART 1. WATER SUPPLY SYSTEM DESCRIPTION AND EVALUATION
The first step in any water supply analysis is to assess the current status of demand and availability.
Information summarized in Part 1 can be used to develop Emergency Preparedness Procedures (Part 2)
and the Water Conservation Plan (Part 3). This data is also needed to track progress for water efficiency
measures.
A.Analysis of Water Demand
Complete Table 2 showing the past 10 years of water demand data.
•Some of this information may be in your Wellhead Protection Plan.
•If you do not have this information, do your best, call your engineer for assistance or if
necessary leave blank.
If your customer categories are different than the ones listed in Table 2, please describe the differences
below:
N/A
City of Chanhassen 2040 Comprehensive Plan244
Local Water Supply Plan
10
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Table 2. Historic Water Demand (see definitions in the glossary after Part 4 of this template)
Year Pop.
Served
Total
Connections
Resident
ial
Water
Delivere
d (MG)
C/I/I
Water
Deliver
ed
(MG)
Water
used for
Non-
essential
Wholesa
le
Deliverie
s (MG)
Total Water
Delivered
(MG)
Total Water
Pumped
(MG)
Water
Supplier
Services
Percent
Unmetered/
Unaccounted
Average Daily
Demand (MGD)
Max. Daily
Demand
(MGD)
Date of
Max.
Demand
Residential
Per Capita
Demand
(GPCD)
Total per
capita
Demand
(GPCD)
2005 22,194 6,779 688.5 250.2 938.7 982 4.4% 2.7 7.7 7/16/05 85.0 115.9
2006 22,219 6,645 861.1 266.1 1,127.2 1,154.8 2.4% 3.1 9.8 7/7/06 106.2 139.0
2007 23.889 6,796 774.3 256.3 1.030.7 1,106.5 6.8% 2.8 8.9 7/21/07 88.8 118.2
2008 24,321 7,276 786.1 298.3 1,084.4 1,175.9 7.8% 3.2 7.7 7/6/08 88.3 121.8
2009 24,481 7,361 827.2 346.2 1,173.4 1,329.5 11.7% 3.2 8.4 7/12/09 92.6 131.3
2010 24,699 7,885 689.2 281.9 971.1 985.0 1.4% 2.7 6.4 7/15/10 76.5 107.7
2011 23,179 7,655 749.1 258.1 1,007.2 1,034.7 2.7% 2.8 6.6 9/10/11 88.5 119.0
2012 23,484 7,492 867.1 312.9 1,180.0 1,189.6 6.9% 3.2 7.9 7/23/12 100.9 137.3
2013 23,840 7,924 764.2 277.6 1,042.4 1,049.9 0.7% 2.9 8.15 7/12/13 87.8 119.8
2014 24,432 8,048 675.7 252.3 928.0 964.5 3.8% 2.6 7.2 8/15/14 75.8 104.1
2015 24,951 8,075 619.1 291.9 911.0 926.3 1.6% 2.5 6.2 8/23/15 68.0 100.0
Avg.
2010-
2015
754.69 281.07 942.13 1081.7 4.53% 2.88 6.98 87.13 119.46
MG – Million Gallons MGD – Million Gallons per Day GPCD – Gallons per Capita per Day
City of Chanhassen 2040 Comprehensive Plan245
Local Water Supply Plan
11
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Complete Table 3 by listing the top 10 water users by volume, from largest to smallest. For each user,
include information about the category of use (residential, commercial, industrial, institutional, or
wholesale), the amount of water used in gallons per year, the percent of total water delivered, and the
status of water conservation measures.
Table 3. Large Volume Users
Customer Use Category (Residential,
Industrial, Commercial,
Institutional, Wholesale)
Amount
Used
(Gallons
per Year)
Percent of Total
Annual Water
Delivered
Implementing Water
Conservation
Measures?
(Yes/No/Unknown)
1 GENERAL MILLS 20,357,000 2.23% UNKNOWN
2 ROSEMOUNT INC 16,963,000 1.86% YES
3 LIFETIME FITNESS 8,635,000 0.95% UNKNOWN
4 BANTA DIRECT MARKETING 6,253,000 0.69% UNKNOWN
5 IWCO DIRECT 5,594,000 0.61% YES
6 CHANHASSEN DINNER
THEATER
5,429,000 0.60% UNKNOWN
7 CONV STORE INVEST 3,596,000 0.39% UNKNOWN
8 ISD 112 3,542,000 0.39% YES
9 CITY OF SHOREWOOD
18 HOMES + HYDRANTS
3,509,000 0.39% UNKNOWN
10 POWERS RIDGE 3,320,000 0.36% YES
B.Treatment and Storage Capacity
Complete Table 4 with a description of where water is treated, the year treatment facilities were
constructed, water treatment capacity, the treatment methods (i.e. chemical addition, reverse osmosis,
coagulation, sedimentation, etc.) and treatment types used (i.e. fluoridation, softening, chlorination,
Fe/MN removal, coagulation, etc.). Also describe the annual amount and method of disposal of
treatment residuals. Add rows to the table as needed.
Table 4. Water Treatment Capacity and Treatment Processes
Treatment
Site ID
(Plant
Name or
Well ID)
Year
Constructed
Treatment
Capacity
(GPD)
Treatment
Method
Treatment
Type
Annual
Amount of
Residuals
Disposal
Process
for
Residuals
Do You
Reclaim
Filter
Backwash
Water?
East Water
Plant
2007 8.64MGD Chemical
Addition/
Gravity
Iron/
Manganese
2.35 MG Sanitary
Sewer
(Met
Council)
Yes
Total NA NA NA NA
Complete Table 5 with information about storage structures. Describe the type (i.e. elevated, ground,
etc.), the storage capacity of each type of structure, the year each structure was constructed, and the
primary material for each structure. Add rows to the table as needed.
City of Chanhassen 2040 Comprehensive Plan246
Local Water Supply Plan
12
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
City of Chanhassen 2040 Comprehensive Plan247
Local Water Supply Plan
13
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Table 5. Storage Capacity, as of the End of the Last Calendar Year
Structure Name Type of Storage
Structure
Year Constructed Primary Material Storage
Capacity
(Gallons)
1 Elevated storage 1987 Steel 3,500,000
2 Elevated storage 1999 Steel 1,500,000
3 Elevated storage 2013 Composite - Steel/Concrete 750,000
4 Ground storage 2005 Concrete 250,000
5 Other -
Total NA NA NA 6,000,000
Treatment and storage capacity versus demand
It is recommended that total storage equal or exceed the average daily demand.
Discuss the difference between current storage and treatment capacity versus the water supplier’s
projected average water demand over the next 10 years (see Table 7 for projected water demand).
The average daily water demand is 2.88 MGD. The current water storage capacity should be sufficient for the next
5 years based on current projections.
C.Water Sources
Complete Table 6 by listing all types of water sources that supply water to the system, including
groundwater, surface water, interconnections with other water suppliers, or others. Provide the name
of each source (aquifer name, river or lake name, name of interconnecting water supplier) and the
Minnesota-unique well number or intake ID, as appropriate. Report the year the source was installed or
established and the current capacity. Provide information about the depth of all wells. Describe the
status of the source (active, inactive, emergency only, retail/wholesale interconnection) and if the
source facilities have a dedicated emergency power source. Add rows to the table as needed for each
installation.
Include copies of well records and maintenance summary for each well that has occurred since your last
approved plan in Appendix 1.
Table 6. Water Sources and Status
Resource Type
(Groundwater,
Surface water,
Interconnection)
Resource
Name
MN Unique Well # or
Intake ID
Year
Install
ed
Capacity
(Gallons
per
Minute)
Well
Depth
(Feet)
Status of Normal
and Emergency
Operations (active,
inactive,
emergency only,
retail/wholesale
interconnection))
Does this Source
have a
Dedicated
Emergency
Power Source?
(Yes or No)
Dell Rd
Interconnect
Eden Prairie 2013 1,000 GPM Emergency Yes
82nd St
Interconnect
Chaska 1997 1,000 GPM Emergency Yes
City of Chanhassen 2040 Comprehensive Plan248
Local Water Supply Plan
14
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Resource Type
(Groundwater,
Surface water,
Interconnection)
Resource
Name
MN Unique Well # or
Intake ID
Year
Install
ed
Capacity
(Gallons
per
Minute)
Well
Depth
(Feet)
Status of Normal
and Emergency
Operations (active,
inactive,
emergency only,
retail/wholesale
interconnection))
Does this Source
have a
Dedicated
Emergency
Power Source?
(Yes or No)
Near Mountain
Interconnect
Shorewood 1985 1,000 GPM Emergency Yes
Strawberry Lane
Interconnect
Shorewood 2014 1,000 GPM Emergency Yes
Groundwater Prairie du
Chien-Jordan
Well #2, ID #220976 1969 650 GPM 471 Active No
Groundwater Prairie du
Chien-Jordan
Well #3, ID #200195 1973 400 GPM 500 Active No
Groundwater Prairie du
Chien-Jordan
Well #4, ID#180913 1981 850 GPM 665 Active No
Groundwater Glacial Drift Well #5, ID #471308 1991 0 215 Active No
Groundwater Glacial Drift Well #6, ID #494519 1991 0 218 Active No
Groundwater Prairie du
Chien-Jordan
Well #7,ID #541545 1996 650 GPM 490 Active No
Groundwater Prairie du
Chien-Jordan
Well #8, ID #578953 1999 900 GPM 489 Active No
Groundwater Prairie du
Chien-Jordan
Well #9, ID #709304 2004 800 GPM 482 Active No
Groundwater Prairie du
Chien-Jordan
Well #10, ID #737048 2006 650 GPM 482 Active Yes
Groundwater Glacial Drift Well #11, ID #737049 2006 250 GPM 214 Active No
Groundwater Prairie du
Chien-Jordan
Well #12, ID #760936 2008 1,300 GPM 441 Active No
Groundwater Prairie du
Chien-Jordan
Well #13, ID #760937 2008 1,250 GPM 460 Active No
Groundwater Prairie du
Chien-Jordan
Well #14, ID #775541 2010 1,400 GPM 472 Active No
Groundwater Jordan Well #15, ID #810696 2015 1,000 GPM 531 Active No
Limits on Emergency Interconnections
Discuss any limitations on the use of the water sources (e.g. not to be operated simultaneously,
limitations due to blending, aquifer recovery issues etc.) and the use of interconnections, including
capacity limits or timing constraints (i.e. only 200 gallons per minute are available from the City of Prior
Lake, and it is estimated to take 6 hours to establish the emergency connection). If there are no
limitations, list none.
About 8 hours to establish Eden Prairie connection (pump required). All others - no limitations.
D.Future Demand Projections – Key Metropolitan Council Benchmark
Water Use Trends
Use the data in Table 2 to describe trends in 1) population served; 2) total per capita water demand; 3)
average daily demand; 4) maximum daily demand. Then explain the causes for upward or downward
trends. For example, over the ten years has the average daily demand trended up or down? Why is this
occurring?
City of Chanhassen 2040 Comprehensive Plan249
Local Water Supply Plan
15
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
From 2005 to 2015, the City of Chanhassen has seen about a 12.5% increase in population. Over this same period,
the average daily demand has been relatively flat with a slight decrease over the past 3 years. The maximum daily
demand has seen a slight decrease over the last 10 years. Over the past 5 years, the summer months has seen above
average precipitation. Water use, especially maximum daily demand, is highly dependent on summer climate
conditions. Along with water conservation initiatives and more efficiencies to the system, the water use trend has
been flat and is projected to remain flat unless precipitation amounts during the summer months dramatically
decrease.
Use the water use trend information discussed above to complete Table 7 with projected annual
demand for the next ten years. Communities in the seven-county Twin Cities metropolitan area must
also include projections for 2030 and 2040 as part of their local comprehensive planning.
Projected demand should be consistent with trends evident in the historical data in Table 2, as discussed
above. Projected demand should also reflect state demographer population projections and/or other
planning projections.
Table 7. Projected Annual Water Demand
Year Projected
Total
Population
Projected
Population
Served
Projected Total Per
Capita Water Demand
(GPCD)
Projected
Average Daily
Demand
(MGD)
Projected Maximum
Daily Demand (MGD)
2016 24,951 22,581 145 3.4 9.0
2017 25,338 22,968 145 3.4 9.2
2018 25,826 23,456 145 3.5 9.4
2019 26,262 23,892 145 3.5 9.5
2020 26,700 24,330 145 3.7 9.7
2021 27,533 25,163 145 3.7 10.0
2022 28,366 25,996 145 3.8 10.3
2023 29,199 26,829 145 3.9 10.6
2024 30,032 27,662 145 3.9 10.9
2025 30,865 28,495 145 4.0 11.2
2030 31,700 29,330 145 4.78 11.5
2040 37,100 34,730 145 5.17 13.4
GPCD – Gallons per Capita per Day MGD – Million Gallons per Day
Projection Method
Describe the method used to project water demand, including assumptions for population and business
growth and how water conservation and efficiency programs affect projected water demand.
The City anticipates the average water use per capita projections to remain relatively flat. Business use should
increase slightly but remain relatively flat due to greater efficiencies. The City is anticipating water reuse irrigation
systems will be used more in the future which should help reduce peak demands.
City of Chanhassen 2040 Comprehensive Plan250
Local Water Supply Plan
16
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
E.Resource Sustainability
Monitoring – Key DNR Benchmark
Complete Table 8 by inserting information about source water quality monitoring efforts. The list
should include all production wells, observation wells, and source water intakes or reservoirs.
Additional information on groundwater level monitoring program at:
http://www.dnr.state.mn.us/waters/groundwater_section/obwell/index.html. Add rows to the table as
needed.
Table 8. Information about Source Water Quality Monitoring
MN Unique Well #
or Surface Water ID
Type of monitoring
point
Monitoring program Frequency of
monitoring
Monitoring Method
Unique ID #220976
Well #2
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #200195
Well #3
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #180913
Well #4
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #471308
Well #5
X production well
(maintenance
permit well)
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
X annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #494519
Well #6
X production well
(maintenance
permit well)
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
hourly
daily
X monthly
quarterly
annually
SCADA
X grab sampling
steel tape
stream gauge
Unique #541545
Well #7
X production well
observation well
source water
intake
Routine MDH
sampling
X Routine water
utility sampling
X continuous
hourly
daily
X SCADA
grab sampling
steel tape
stream gauge
City of Chanhassen 2040 Comprehensive Plan251
Local Water Supply Plan
17
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
MN Unique Well #
or Surface Water ID
Type of monitoring
point
Monitoring program Frequency of
monitoring
Monitoring Method
source water
reservoir
other monthly
quarterly
annually
Unique #578953
Well #8
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #709304
Well #9
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #737048
Well #10
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #737049
Well #11
175 W78th St.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #760936
Well #12
7610 S. Shore Dr.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #760937
Well #13
55 Lake Dr. E.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #775541
Well #14
730 Lake Dr.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #810696
Well #15
1700 Lake Lucy Rd.
X production well
observation well
source water
intake
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
X SCADA
grab sampling
steel tape
stream gauge
City of Chanhassen 2040 Comprehensive Plan252
Local Water Supply Plan
18
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
MN Unique Well #
or Surface Water ID
Type of monitoring
point
Monitoring program Frequency of
monitoring
Monitoring Method
source water
reservoir
annually
Unique #775542
Monitoring Well A
9405 Great Plains
Blvd.
production well
X observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #775543
Monitoring Well B
9405 Great Plains
Blvd.
production well
X observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Water Level Data
A water level monitoring plan that includes monitoring locations and a schedule for water level readings
must be submitted as Appendix 2. If one does not already exist, it needs to be prepared and submitted
with the WSP. Ideally, all production and observation wells are monitored at least monthly.
Complete Table 9 to summarize water level data for each well being monitored. Provide the name of
the aquifer and a brief description of how much water levels vary over the season (the difference
between the highest and lowest water levels measured during the year) and the long-term trends for
each well. If water levels are not measured and recorded on a routine basis, then provide the static
water level when each well was constructed and the most recent water level measured during the same
season the well was constructed. Also include all water level data taken during any well and pump
maintenance. Add rows to the table as needed.
Provide water level data graphs for each well in Appendix 3 for the life of the well, or for as many years
as water levels have been measured. See DNR website for Date Time Water Level
http://www.dnr.state.mn.us/waters/groundwater_section/obwell/waterleveldata.html.
Table 9. Water Level Data
City of Chanhassen 2040 Comprehensive Plan253
Local Water Supply Plan
19
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
Unique ID #220976
Well #2
6/1969
Prairie du Chien-
Jordan
7 ft. Falling
☒ Stable
Rising
6/69: 108
7/30/73: 150
8/12/74: 117
8/14/75: 123.9
8/17/76: 124’8”
9/6/78: 122’5”
3/23/84: 124
/23/94: 136’7”
3/18/13: 152.9’
9/13/13: 189.0’
2/27/14: 179.8’
8/28/14: 155.8’
2/27/15: 148.2’
8/28/15: 153.1’
3/13/15: 147’8”
5/22/15: 151’11”
6/29/15: 152’10”
7/27/15: 167’1”
8/26/15: 155’7”
2/25/16: 149’2”
Unique ID #200195
Well #3
Prairie du Chien-
Jordan
1-5 ft. Falling
☒Stable
Rising
8/30/77: 140.8
9/8/78: 141.7
9/26/79: 143.8
3/23/84: 160.8
4/28/87:148’
8/15/87:143’6”
2/28/88:144’10”
8/17/88:150’7”
2/25/89:148’8”
8/12/89:153’1”
2/21/90:151’9”
9/1/90:155’8”
2/20/91:152’4”
8/28/91:154’11”
2/29/92:152’7”
8/12/92:156’6”
2/14/93:152’10”
8/21/93:154’1”
2/12/94:153’6”
8/28/94:155’3”
2/25/95:152’10”
8/26/95:155’0”
2/24/96:152’4”
7/24/96:44.4
2/23/97:48.2
8/23/97:46.8
2/28/98:48.5
9/6/98:44.6
City of Chanhassen 2040 Comprehensive Plan254
Local Water Supply Plan
20
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
2/22/99:46.5
9/19/99:44.4
2/26/00:47.1
8/19/00:42.8
7/27/11: 167.7
1/9/12: 162.7
3/6/13: 164.4
3/13/15:160’3”
5/22/15:161’3”
6/23/15:161’7”
7/27/15:153’4”
2/25/16: 159’
Unique ID #180913
Well #4
Prairie du Chien-
Jordan
1-7 ft. Falling
☒ Stable
Rising
8/19/81: 84’ drill
3/23/84: 80’2”
8/1/87: 75’0”
8/2/88: 94’1”
8/4/89: 86’7”
8/8/90: 85’4”
4/3/91: 82’1”
8/7/91: 86’8”
3/4/92: 82’1”
8/1/92: 87’0”
3/6/93: 84’1”
8/1/93: 86’1”
3/5/94: 87’8”
8/6/94: 89’10”
3/4/95: 83’6”
8/5/95: 86’7”
3/30/96: 85’8”
8/10/96: 89’2”
3/29/97: 88’5”
8/10/97: 88’1”
3/28/98: 90’0”
8/1/98: 90’3”
3/27/99: 87’9”
7/3/99: 88’0”
7/7/00: 89’1”
8/12/00: 114’9”
8/1/01: 104’8”
11/6/01: 93’7”
4/1/02: 90’7”
11/1/02: 89’8”
9/4/04: 96’1”
1/11/05: 91’9”
7/11/06: 100’
7/24/07: 118’
12/19/07: 96’
7/27/11: 111.6’
City of Chanhassen 2040 Comprehensive Plan255
Local Water Supply Plan
21
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
1/9/12: 99.2’
3/6/13: 101.7”
8/28/14: 102.8’
2/27/15: 95.1’
3/13/15: 95’10”
5/22/15: 102’7”
8/28/15: 100.8’
2/25/16: 96’11”
2/29/16: 94.9’
Unique ID #471308
Well #5
Glacial Drift Falling
☒ Stable
Rising
8/13/90: 125’
8/3/91: 133’4”
4/1/92: 133’3”
8/1/92: 136’0”
4/10/93: 134’10”
8/1/93: 136’6”
4/2/94: 136’8”
8/6/94: 140’6”
4/1/95: 137’9”
11/11/95: 141’1”
4/6/96: 139’2”
11/3/96: 146’7”
4/5/97: 140’5”
10/11/97: 146’8”
4/4/98: 141’5”
11/8/98: 146’0”
4/3/99: 139’11”
11/20/99: 145’2”
1/18/00: 147’9”
4/15/00: 142’2”
11/6/01: 150’8”
3/1/02: 149’1”
1/12/05: 147’7”
7/24/07: 158’6”
8/2/08: 161’
12/4/08: 153’
5/5/09: 151’
1/9/12: 152.7’
3/6/13: 152.7’
Unique ID #494519
Well #6
Glacial Drift Falling
☒ Stable
Rising
4/1/92: 131’5”
11/7/92: 134’7”
4/4/93: 132’8”
11/6/93: 135’11”
3/26/94: 133’11”
11/13/94: 136’0”
4/15/95: 134’11”
11/4/95: 138’5”
4/27/96: 138’10”
11/9/96: 144’3”
City of Chanhassen 2040 Comprehensive Plan256
Local Water Supply Plan
22
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
4/5/97: 140’7”
11/8/97: 142’6”
4/4/98: 139’10”
11/8/98: 142’4”
4/3/99: 138’2”
8/28/99: 141’6”
4/2/00: 140’5”
11/18/00: 148’10”
12/2/00: 144’5”
7/24/07: 159’
8/30/07: 157’9”
3/18/08: 149’11”
12/4/08: 149’3”
7/27/11: 149.8
1/9/12: 154.3
3/6/13: 151.2
5/10/16: 144.5’
Unique #541545
Well #7
Prairie du Chien-
Jordan
Falling
☒ Stable
Rising
6/28/96: 135.0
7/27/11: 158.2
1/9/12: 152.7
3/6/13: 133.6
3/18/13: n/a
9/13/13: 157.3
2/27/14: 150.6
8/28/14: 154.3
2/27/15: 150.2
8/28/15: 153.2
2/29/16: 149.4
Unique #578953
Well #8
Prairie du Chien-
Jordan
Falling
☒ Stable
Rising
1/25/99: 180.5
9/24/01: 194.5
4/1/02: 194
6/3/02: 199
11/1/02: 190
9/1/04: 207.5
1/12/05: 199.5
7/24/07: 200
10/6/07: 195
7/27/11: 195.6
1/9/12: 189.5
3/18/13: 189.1
9/13/13: 194.3
2/27/14: 188.0
8/28/14: 191.4
2/27/15: 187.7
8/28/15: 190.2
2/29/16: 186.2
City of Chanhassen 2040 Comprehensive Plan257
Local Water Supply Plan
23
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
Unique #709304
Well #9
Prairie du Chien-
Jordan
Falling
☒Stable
Rising
1/21/09: 148
1/9/12: 149.5
3/18/13: 149.2
9/13/13: 154.4
2/27/14: 147.2
8/28/14: 150.2
2/27/15: 148.2
8/28/15: 151.1
2/29/16: 150.9
Unique #737048
Well #10
Prairie du Chien-
Jordan
Falling
☒Stable
Rising
1/21/09: 163
7/27/11: 169.5
1/9/12: 180.4
3/18/13: 156.0
9/13/13: 172.3
2/27/14: 160.1
8/28/14: 162.8
2/27/15: 153.4
8/28/15: 150.3
2/29/16: 154.0
Unique ID #737049
Well #11
Glacial Drift Falling
☒Stable
Rising
3/24/06: 137
7/24/07: 157
8/31/07: 155
12/28/07: 149
12/04/08: 148
1/9/09: 146
7/27/11: 147.6
1/9/12: 147
3/6/13: 147.7
Unique #760936
Well #12
Prairie du Chien-
Jordan
Falling
☒Stable
Rising
7/27/11: 103.3
1/9/12: 97.7
3/18/13: 94.7
9/13/13: 112.3
2/27/14: 95.3
8/28/14: 103.2
2/27/15: 94.0
8/28/15: 97.7
2/29/16: 95.4
Unique #760937
Well #13
Prairie du Chien-
Jordan
Falling
☒Stable
Rising
7/27/11: 127.3
1/9/12: 122.3
3/18/13: 121.4
9/13/13: 138.2
2/27/14: 120.9
8/28/14: 127.4
2/27/15: 119.5
8/28/15: 124.9
2/29/16: 118.9
City of Chanhassen 2040 Comprehensive Plan258
Local Water Supply Plan
24
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Unique Well
Number or Well ID
Aquifer Name Seasonal Variation
(Feet)
Long-term Trend in
water level data
Water level
measured during
well/pumping
maintenance
Unique ID #775541
Well #14
Prairie du Chien-
Jordan
Falling
☒ Stable
Rising
7/27/11: 150.1
1/9/12:143.7
3/18/13: 139.9
9/13/13: 162.7
2/27/14: 152.0
8/28/14: 149.5
2/27/15: 140.2
8/28/15: 146.4
2/29/16: 137.4
Unique ID # 810696
Well #15
Jordan Falling
☒ Stable
Rising
8/12/16: 164.9
Unique #775542
Monitoring Well A
Falling
☒ Stable
Rising
3/18/13: 117.5
9/13/13: 124.7
1/24/14: 118.3
8/28/14: 123.3
2/27/15: 119.8
8/28/15: 121.4
2/29/16: 123.6
Unique #775543
Monitoring Well B
Falling
☒ Stable
Rising
3/18/13: 120.5
9/13/13: 125.0
2/27/14: 121.3
8/28/14: 123.2
2/27/15: 120.8
8/28/15: 122.3
2/29/16: 122.4
Potential Water Supply Issues & Natural Resource Impacts – Key DNR & Metropolitan Council
Benchmark
Complete Table 10 by listing the types of natural resources that are or could be impacted by permitted
water withdrawals. If known, provide the name of specific resources that may be impacted. Identify
what the greatest risks to the resource are and how the risks are being assessed. Identify any resource
protection thresholds – formal or informal – that have been established to identify when actions should
be taken to mitigate impacts. Provide information about the potential mitigation actions that may be
taken, if a resource protection threshold is crossed. Add additional rows to the table as needed. See the
glossary at the end of the template for definitions.
Some of this baseline data should have been in your earlier water supply plans or county comprehensive
water plans. When filling out this table, think of what are the water supply risks, identify the resources,
determine the threshold and then determine what your community will do to mitigate the impacts.
Your DNR area hydrologist is available to assist with this table.
City of Chanhassen 2040 Comprehensive Plan259
Local Water Supply Plan
25
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
For communities in the seven-county Twin Cities metropolitan area, the Master Water Supply Plan
Appendix 1 (Water Supply Profiles, provides information about potential water supply issues and natural
resource impacts for your community.
Table 10. Natural Resource Impacts
Resource
Type
Resource Name Risk Risk Assessed
Through
Describe
Resource
Protection
Threshold*
Mitigation
Measure or
Management
Plan
Describe
How
Changes to
Thresholds
are
Monitored
☒ River or
stream
Bluff Creek,
Riley Creek &
Assumption
Creek
☐
Flow/water
level decline
☒ Degrading
water quality
trends and/or
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
GIS
analysis
☐ Modeling
Mapping
Monitoring
Aquifer
testing
☒ Other:
Risk
Assessment
is through
the local
watershed
district which
has
jurisdiction.
Thresholds
are set by
other the
watershed
districts.
Revise
permit
Change
groundwater
pumping
Increase
conservation
☒ Other.
The City will
work with
other
organizations
who sets the
thresholds.
The City
works with
the
watershed
district to
manage the
resource.
Monitoring is
completed
by other
agencies.
☒
Calcareous
fen
Seminary Fen ☒
Flow/water
level decline
Degrading
water quality
trends and/or
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
GIS
analysis
Modeling
Mapping
Monitoring
☐ Aquifer
testing
☒ Other:
The DNR and
wateshed
district are
monitoring
the Fen.
The
Minnesota
DNR is
actively
monitoring
the Fen and
sets the
threshold.
Revise
permit
Change
groundwater
pumping
Increase
conservation
☒ Other:
The DNR is
working on a
management
plan for this
resource.
The City is
actively
working with
other
agencies
such as the
DNR, Met.
Council and
watershed
district to
monitor any
changes to
the resource.
City of Chanhassen 2040 Comprehensive Plan260
Local Water Supply Plan
26
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Resource
Type
Resource Name Risk Risk Assessed
Through
Describe
Resource
Protection
Threshold*
Mitigation
Measure or
Management
Plan
Describe
How
Changes to
Thresholds
are
Monitored
☒ Lake Minnewashta,
Ann, Lucy,
Christmas,
Lotus, Susan &
Riley
Flow/water
level decline
☒ Degrading
water quality
trends and/or
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
GIS
analysis
GIS
analysis
Modeling
Mapping
☐
Monitoring
Aquifer
testing
☒ Other:
watershed
district
The local
watershed
district sets
the threshold.
Revise
permit
Change
groundwater
pumping
Increase
conservation
☒ Other:
The City is
working with
the
watershed
districts on
management
plans.
The
watershed
district sets
the
thresholds
and monitors
the lakes.
☒ Wetland
Flow/water
level decline
☒ Degrading
water quality
trends and/or
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
GIS
analysis
Modeling
Mapping
Monitoring
Aquifer
testing
☒ Other:
watershed
district
The local
watershed
district sets
the threshold.
Revise
permit
Change
groundwater
pumping
Increase
conservation
☒ Other:
The City is
working with
the
watershed
districts on
management
plans.
The
watershed
district sets
the
thresholds
and monitors
the
wetlands.
☒ Trout
Stream
Assumption
Creek
☒
Flow/water
level decline
Degrading
water quality
trends and/or
GIS
analysis
Modeling
Mapping
Monitoring
Other
agencies set
the
thresholds
Revise
permit
Change
groundwater
pumping
Increase
conservation
Other
agencies are
monitoring
the stream
and sets the
thresholds.
The City is
City of Chanhassen 2040 Comprehensive Plan261
Local Water Supply Plan
27
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Resource
Type
Resource Name Risk Risk Assessed
Through
Describe
Resource
Protection
Threshold*
Mitigation
Measure or
Management
Plan
Describe
How
Changes to
Thresholds
are
Monitored
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
Aquifer
testing
☒Other:
Metropolitan
Council, DNR,
watershed
district, U.S.
Fish and
Wildlife.
☒Other:
Other
agencies are
monitoring
the stream
and are
working on a
management
plan.
actively
participating
in these
discussions.
☒Aquifer Drift, Prairie du
Chien, Jordan,
Tunnel City, and
Mount
Simon/Hinckley.
☒
Flow/water
level decline
Degrading
water quality
trends and/or
MCLs
exceeded
Impacts on
endangered,
threatened,
or special
concern
species
habitat or
other natural
resource
impacts
Other:
_____
GIS
analysis
Modeling
Mapping
Monitoring
Aquifer
testing
☐Other:
SCADA
The City will
work with the
DNR and the
Metropolitan
Council on
setting
thresholds.
Revise
permit
Change
groundwater
pumping
☒Increase
conservation
☒Other:
Evaluate
using another
aquifer other
than the
impacted
aquifer.
Evaluate
other water
sources
besides
aquifer
resource.
The City will
work with
the DNR and
the
Metropolitan
Council on
setting
thresholds.
This has to
be
completed
on a regional
basis.
Endangered,
threatened,
or special
concern
species
habitat,
other Natural
resource
impacts
* Examples of thresholds: a lower limit on acceptable flow in a river or stream; water quality outside of
an accepted range; a lower limit on acceptable aquifer level decline at one or more monitoring wells;
City of Chanhassen 2040 Comprehensive Plan262
Local Water Supply Plan
28
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
withdrawals that exceed some percent of the total amount available from a source; or a lower limit on
acceptable changes to a protected habitat.
Wellhead Protection (WHP) and Source Water Protection (SWP) Plans
Complete Table 11 to provide status information about WHP and SWP plans.
The emergency procedures in this plan are intended to comply with the contingency plan provisions
required in the Minnesota Department of Health’s (MDH) Wellhead Protection (WHP) Plan and Surface
Water Protection (SWP) Plan.
Table 11. Status of Wellhead Protection and Source Water Protection Plans
Plan Type Status Date Adopted Date for Update
WHP In Process
Completed
Not Applicable
11/7/12 11/7/22
SWP In Process
Completed
Not Applicable
6/01/18
WHP – Wellhead Protection Plan SWP – Source Water Protection Plan
F.Capital Improvement Plan (CIP)
Please note that any wells that received approval under a ten-year permit, but that were not built, are
now expired and must submit a water appropriations permit.
Adequacy of Water Supply System
Complete Table 12 with information about the adequacy of wells and/or intakes, storage facilities,
treatment facilities, and distribution systems to sustain current and projected demands. List planned
capital improvements for any system components, in chronological order. Communities in the seven-
county Twin Cities metropolitan area should also include information about plans through 2040.
The assessment can be the general status by category; it is not necessary to identify every single well,
storage facility, treatment facility, lift station, and mile of pipe.
Please attach your latest Capital Improvement Plan as Appendix 4.
Table 12. Adequacy of Water Supply System
System Component Planned action Anticipated
Construction
Year
Notes
Wells/Intakes No action planned - adequate
☒Repair/replacement
☒Expansion/addition
Wells will be
added as
growth of the
community
City of Chanhassen 2040 Comprehensive Plan263
Local Water Supply Plan
29
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
System Component Planned action Anticipated
Construction
Year
Notes
dictates. Well
pumps and
motors are
inspected and
serviced every
8 years.
Water Storage Facilities
No action planned - adequate
☒ Repair/replacement
☒ Expansion/addition
The
Watertower
Place tank (1.5
MG) is
scheduled to
be recoated in
2019. New
water storage
facilities will
be added as
development
dictates.
Water Treatment Facilities No action planned - adequate
Repair/replacement
☒ Expansion/addition
A west water
treatment
facility is
scheduled to
be
constructed in
2017 to treat
the west well
field.
Distribution Systems (pipes, valves,
etc.)
No action planned - adequate
☒ Repair/replacement
☒ Expansion/addition
The City is
removing cast
iron pipe from
the
distribution
system with
street
reconstruction
projects.
Annually, the
City exercises
valves and
hydrants and
makes repairs
as needed.
Pressure Zones No action planned - adequate
Repair/replacement
☒ Expansion/addition
Added as
development
occurs.
Other: No action planned - adequate
Repair/replacement
Expansion/addition
City of Chanhassen 2040 Comprehensive Plan264
Local Water Supply Plan
30
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Proposed Future Water Sources
Complete Table 13 to identify new water source installation planned over the next ten years. Add rows
to the table as needed.
Table 13. Proposed Future Installations/Sources
Source Installation
Location
(approximate)
Resource
Name
Proposed
Pumping
Capacity (gpm)
Planned
Installation Year
Planned
Partnerships
Groundwater West Well Field Jordan,
Tunnel City or
Mount
Simon-
Hinckley
Aquifers
1,000 gpm Possibly 3 new
wells needed to in
the next 10 years
None
Surface Water None
Interconnection
to another
supplier
None Planned
Water Source Alternatives - Key Metropolitan Council Benchmark
Do you anticipate the need for alternative water sources in the next 10 years? __ Yes _X_ No
For metro communities, will you need alternative water sources by the year 2040? __ Yes _X_ No
Unknown at this time.
If you answered yes for either question, then complete table 14. If no, insert NA.
Complete Table 14 by checking the box next to alternative approaches that your community is
considering, including approximate locations (if known), the estimated amount of future demand that
could be met through the approach, the estimated timeframe to implement the approach, potential
partnerships, and the major benefits and challenges of the approach. Add rows to the table as needed.
For communities in the seven-county Twin Cities metropolitan area, these alternatives should include
approaches the community is considering to meet projected 2040 water demand.
Table 14. Alternative water sources
Alternative Source
Considered
Source and/or
Installation
Location
(approximate)
Estimated
Amount
of Future
Demand
(%)
Timeframe to
Implement
(YYYY)
Potential
Partners
Benefits Challenges
Groundwater
Surface Water
Reclaimed Stormwater
Reclaimed Wastewater
Interconnection To
Another Supplier
City of Chanhassen 2040 Comprehensive Plan265
Local Water Supply Plan
31
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Part 2. Emergency Preparedness Procedures
The emergency preparedness procedures outlined in this plan are intended to comply with the
contingency plan provisions required by MDH in the WHP and SWP. Water emergencies can occur as a
result of vandalism, sabotage, accidental contamination, mechanical problems, power failings, drought,
flooding, and other natural disasters. The purpose of emergency planning is to develop emergency
response procedures and to identify actions needed to improve emergency preparedness. In the case of
a municipality, these procedures should be in support of, and part of, an all-hazard emergency
operations plan. Municipalities that already have written procedures dealing with water emergencies
should review the following information and update existing procedures to address these water supply
protection measures.
A.Federal Emergency Response Plan
Section 1433(b) of the Safe Drinking Water Act, (Public Law 107-188, Title IV- Drinking Water Security
and Safety) requires community water suppliers serving over 3,300 people to prepare an Emergency
Response Plan.
Do you have a federal emergency response plan? ☐ Yes ☒ No
If yes, what was the date it was certified? ____________________
Complete Table 15 by inserting the noted information regarding your completed Federal Emergency
Response Plan.
Table 15. Emergency Preparedness Plan Contact Information
Emergency Response Plan Role Contact Person Contact Phone
Number
Contact Email
Emergency Response Lead Kevin Crooks 612-490-7776 kcrooks@ci.chanhassen.mn.us
Alternate Emergency Response Lead Craig Carlson 612-217-3442 ccarlson@ci.chanhassen.mn.us
B.Operational Contingency Plan
All utilities should have a written operational contingency plan that describes measures to be taken for
water supply mainline breaks and other common system failures as well as routine maintenance.
Do you have a written operational contingency plan? ☐ Yes ☒ No
At a minimum, a water supplier should prepare and maintain an emergency contact list of contractors
and suppliers.
C.Emergency Response Procedures
Water suppliers must meet the requirements of MN Rules 4720.5280. Accordingly, the Minnesota
Department of Natural Resources (DNR) requires public water suppliers serving more than 1,000 people
to submit Emergency and Conservation Plans. Water emergency and conservation plans that have been
approved by the DNR, under provisions of Minnesota Statute 186 and Minnesota Rules, Part 6115.0770,
will be considered equivalent to an approved WHP contingency plan.
City of Chanhassen 2040 Comprehensive Plan266
Local Water Supply Plan
32
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Emergency Telephone List
Prepare and attach a list of emergency contacts, including the MN Duty Officer (1-800-422-0798), as
Appendix 5. A template is available at www.mndnr.gov/watersupplyplans
The list should include key utility and community personnel, contacts in adjacent water suppliers, and
appropriate local, state and federal emergency contacts. Please be sure to verify and update the
contacts on the emergency telephone list and date it. Thereafter, update on a regular basis (once a year
is recommended). In the case of a municipality, this information should be contained in a notification
and warning standard operating procedure maintained by the Emergency Manager for that community.
Responsibilities and services for each contact should be defined.
Current Water Sources and Service Area
Quick access to concise and detailed information on water sources, water treatment, and the
distribution system may be needed in an emergency. System operation and maintenance records
should be maintained in secured central and back-up locations so that the records are accessible for
emergency purposes. A detailed map of the system showing the treatment plants, water sources,
storage facilities, supply lines, interconnections, and other information that would be useful in an
emergency should also be readily available. It is critical that public water supplier representatives and
emergency response personnel communicate about the response procedures and be able to easily
obtain this kind of information both in electronic and hard copy formats (in case of a power outage).
Do records and maps exist? ☒ Yes No
Can staff access records and maps from a central secured location in the event of an emergency?
☒Yes No
Does the appropriate staff know where the materials are located?
☒Yes No
Procedure for Augmenting Water Supplies
Complete Tables 16 – 17 by listing all available sources of water that can be used to augment or replace
existing sources in an emergency. Add rows to the tables as needed.
In the case of a municipality, this information should be contained in a notification and warning
standard operating procedure maintained by the warning point for that community. Municipalities are
encouraged to execute cooperative agreements for potential emergency water services and copies
should be included in Appendix 6. Outstate communities may consider using nearby high capacity wells
(industry, golf course) as emergency water sources.
WSP should include information on any physical or chemical problems that may limit interconnections
to other sources of water. Approvals from the MDH are required for interconnections or the reuse of
water.
City of Chanhassen 2040 Comprehensive Plan267
Local Water Supply Plan
33
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Table 16. Interconnections With Other Water Supply Systems To Supply Water In An Emergency
Other Water
Supply System
Owner
Capacity (GPM
& MGD)
Note Any Limitations On
Use
List of services, equipment, supplies
available to respond
Eden Prairie 1,000 GPM Would take about 8 hours
to set up connection.
Pump would be needed to pump Eden
Prairie water to Chanhassen system using
fire hydrants.
Chaska 1,000 GPM Approval from Chaska
Required
None
Shorewood 1,000 GPM Approval from Shorewood
Required
None
GPM – Gallons Per Minute MGD – Million Gallons Per Day
Table 17. Utilizing Surface Water As An Alternative Source
Surface Water
Source Name
Capacity
(GPM)
Capacity
(MGD)
Treatment Needs Note Any Limitations
On Use
Minnesota River N/A N/A Water would need to be treated
with an R/O system. No
treatment is currently available.
Unknown
If not covered above, describe additional emergency measures for providing water (obtaining bottled
water, or steps to obtain National Guard services, etc.)
The City would need to obtain and distribute bottled water for a short-term emergency. For longer term water
disruptions, bulk water distribution sites would need to be set up. Local forces would take the lead on this effort.
For a regional long-term water disruption, the National Guard would need to be utilized. Use of the National Guard
would be requested through the Governor.
Allocation and Demand Reduction Procedures
Complete Table 18 by adding information about how decisions will be made to allocate water and
reduce demand during an emergency. Provide information for each customer category, including its
priority ranking, average day demand, and demand reduction potential for each customer category.
Modify the customer categories as needed, and add additional lines if necessary.
Water use categories should be prioritized in a way that is consistent with Minnesota Statutes 103G.261
(#1 is highest priority) as follows:
1.Water use for human needs such as cooking, cleaning, drinking, washing and waste disposal; use
for on-farm livestock watering; and use for power production that meets contingency
requirements.
2.Water use involving consumption of less than 10,000 gallons per day (usually from private wells
or surface water intakes).
City of Chanhassen 2040 Comprehensive Plan268
Local Water Supply Plan
34
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
3.Water use for agricultural irrigation and processing of agricultural products involving
consumption of more than 10,000 gallons per day (usually from private high-capacity wells or
surface water intakes).
4.Water use for power production above the use provided for in the contingency plan.
5.All other water use involving consumption of more than 10,000 gallons per day.
6.Non-essential uses – car washes, golf courses, etc.
Water used for human needs at hospitals, nursing homes and similar types of facilities should be
designated as a high priority to be maintained in an emergency. Lower priority uses will need to address
water used for human needs at other types of facilities such as hotels, office buildings, and
manufacturing plants. The volume of water and other types of water uses at these facilities must be
carefully considered. After reviewing the data, common sense should dictate local allocation priorities
to protect domestic requirements over certain types of economic needs. Water use for lawn sprinkling,
vehicle washing, golf courses, and recreation are legislatively considered non-essential.
Table 18. Water use priorities
Customer Category Allocation Priority Average Daily Demand
(GPD)
Short-Term Emergency
Demand Reduction
Potential (GPD)
Residential 1 1,948,651 1,550,000
Institutional 2 26,987 24,000
Commercial 3 298,121 252,000
Industrial 4 187,876 161,000
Irrigation 6 390,031 0
Wholesale 5 11,396 6,000
Non-Essential 7 16,938 7,000
TOTAL NA 2,880,000 2,000,000
GPD – Gallons Per Day
Tip: Calculating Emergency Demand Reduction Potential
The emergency demand reduction potential for all uses will typically equal the difference between
maximum use (summer demand) and base use (winter demand). In extreme emergency situations,
lower priority water uses must be restricted or eliminated to protect priority domestic water
requirements. Emergency demand reduction potential should be based on average day demands for
customer categories within each priority class. Use the tables in Part 3 on water conservation to help
you determine strategies.
Complete Table 19 by selecting the triggers and actions during water supply disruption conditions.
Table 19. Emergency Demand Reduction Conditions, Triggers and Actions (Select all that may apply and describe)
City of Chanhassen 2040 Comprehensive Plan269
Local Water Supply Plan
35
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Emergency Triggers Short-term Actions Long-term Actions
☒Contamination
☒Loss of production
☒Infrastructure failure
☒Executive order by
Governor
☒Additional: Power
Failure
☒Supply augmentation through
Other City interconnects
Adopt (if not already) and
enforce a critical water
deficiency ordinance to penalize
lawn watering, vehicle washing,
golf course and park irrigation &
other nonessential uses.
Water allocation through____
☒Meet with large water users to
discuss their contingency plan.
☒Supply augmentation through
Other City interconnects
☒Adopt (if not already) and
enforce a critical water
deficiency ordinance to penalize
lawn watering, vehicle washing,
golf course and park irrigation &
other nonessential uses.
Water allocation through____
☒Meet with large water users to
discuss their contingency plan.
Notification Procedures
Complete Table 20 by selecting trigger for informing customers regarding conservation requests, water
use restrictions, and suspensions; notification frequencies; and partners that may assist in the
notification process. Add rows to the table as needed.
Table 20. Plan To Inform Customers Regarding Conservation Requests, Water Use Restrictions, and Suspensions
Notification
Trigger(s)
Methods (select all that apply) Update
Frequency
Partners
☒Short-term
demand
reduction
declared (< 1
year)
☒Website
Email list serve
☐Social media (e.g. Twitter,
Facebook)
☒Direct customer mailing,
☒Press release (TV, radio,
newspaper),
☒Meeting with large water users
(> 10% of total city use)
Other: ________
☒Daily
Weekly
Monthly
Annually
☒Long-term
ongoing
demand
reduction
declared
☒Website
Email list serve
☒Social media (e.g. Twitter,
Facebook)
☒Direct customer mailing,
☒Press release (TV, radio,
newspaper),
☒Meeting with large water users
(> 10% of total city use)
Other: ________
☒Daily
☒Weekly
Monthly
Annually
☒Governor’s
Critical water
deficiency
declared
☒Website
Email list serve
☒Social media (e.g. Twitter,
Facebook)
☒Direct customer mailing,
☒Press release (TV, radio,
newspaper),
Daily
☒Weekly
Monthly
Annually
City of Chanhassen 2040 Comprehensive Plan270
Local Water Supply Plan
36
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Notification
Trigger(s)
Methods (select all that apply) Update
Frequency
Partners
☒ Meeting with large water users
(> 10% of total city use)
Other: ________
Enforcement
Prior to a water emergency, municipal water suppliers must adopt regulations that restrict water use
and outline the enforcement response plan. The enforcement response plan must outline how
conditions will be monitored to know when enforcement actions are triggered, what enforcement tools
will be used, who will be responsible for enforcement, and what timelines for corrective actions will be
expected.
Affected operations, communications, and enforcement staff must then be trained to rapidly implement
those provisions during emergency conditions.
Important Note:
Disregard of critical water deficiency orders, even though total appropriation remains less than
permitted, is adequate grounds for immediate modification of a public water supply authority’s water
use permit (2013 MN Statutes 103G.291)
Does the city have a critical water deficiency restriction/official control in place that includes
provisions to restrict water use and enforce the restrictions? (This restriction may be an ordinance,
rule, regulation, policy under a council directive, or other official control) ☒ Yes ☐ No
If yes, attach the official control document to this WSP as Appendix 7.
If no, the municipality must adopt such an official control within 6 months of submitting this WSP and
submit it to the DNR as an amendment to this WSP.
Irrespective of whether a critical water deficiency control is in place, does the public water supply
utility, city manager, mayor, or emergency manager have standing authority to implement water
restrictions? ☒ Yes No
If yes, cite the regulatory authority reference: Sec. 19-28a .
If no, who has authority to implement water use restrictions in an emergency?
City of Chanhassen 2040 Comprehensive Plan271
Local Water Supply Plan
37
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
PART 3. WATER CONSERVATION PLAN
Minnesotans have historically benefited from the state’s abundant
water supplies, reducing the need for conservation. There are
however, limits to the available supplies of water and increasing
threats to the quality of our drinking water. Causes of water supply
limitation may include: population increases, economic trends,
uneven statewide availability of groundwater, climatic changes, and
degraded water quality. Examples of threats to drinking water
quality include: the presence of contaminant plumes from past land
use activities, exceedances of water quality standards from natural
and human sources, contaminants of emerging concern, and
increasing pollutant trends from nonpoint sources.
There are many incentives for conserving water; conservation:
•reduces the potential for pumping-induced transfer of contaminants into the deeper aquifers,
which can add treatment costs
•reduces the need for capital projects to expand system capacity
•reduces the likelihood of water use conflicts, like well interference, aquatic habitat loss, and
declining lake levels
•conserves energy, because less energy is needed to extract, treat and distribute water (and less
energy production also conserves water since water is use to produce energy)
•maintains water supplies that can then be available during times of drought
It is therefore imperative that water suppliers implement water conservation plans. The first step in
water conservation is identifying opportunities for behavioral or engineering changes that could be
made to reduce water use by conducting a thorough analysis of:
•Water use by customer
•Extraction, treatment, distribution and irrigation system efficiencies
•Industrial processing system efficiencies
•Regulatory and barriers to conservation
•Cultural barriers to conservation
•Water reuse opportunities
Once accurate data is compiled, water suppliers can set achievable goals for reducing water use. A
successful water conservation plan follows a logical sequence of events. The plan should address both
conservation on the supply side (leak detection and repairs, metering), as well as on the demand side
(reductions in usage). Implementation should be conducted in phases, starting with the most obvious
and lowest-cost options. In some cases one of the early steps will be reviewing regulatory constraints to
water conservation, such as lawn irrigation requirements. Outside funding and grants may be available
for implementation of projects. Engage water system operators and maintenance staff and customers
in brainstorming opportunities to reduce water use. Ask the question: “How can I help save water?”
Progress since 2006
Is this your community’s first Water Supply Plan? Yes ☒ No
Priority 1:
Significant water
reduction; low
cost
Priority 2: Slight
water reduction,
low costs (low
hanging fruit)
Priority 2:
Significant water
reduction;
significant costs
Priority 3: Slight
water reduction,
significant costs
(do only if
necessary)
City of Chanhassen 2040 Comprehensive Plan272
Local Water Supply Plan
38
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
If yes, describe conservation practices that you are already implementing, such as: pricing, system
improvements, education, regulation, appliance retrofitting, enforcement, etc.
If no, complete Table 21 to summarize conservation actions taken since the adoption of the 2006 water
supply plan.
Table 21. Implementation of previous ten-year Conservation Plan
2006 Plan Commitments Action Taken?
Change Water Rates Structure to provide conservation pricing ☒Yes
No
Water Supply System Improvements (e.g. leak repairs, valve replacements, etc.) ☒ Yes
No
Educational Efforts – WaterWise Program
http://www.ci.chanhassen.mn.us/index.aspx?nid=410
☒ Yes
No
New water conservation ordinances Yes
☒ No
Rebate or Retrofitting Program (e.g. for toilet, faucets, appliances, showerheads, dish
washers, washing machines, irrigation systems, rain barrels, water softeners, etc.)
☒ Yes
☐ No
Enforcement - have the ability to enforce if necessary.
☒ Yes
☐ No
Describe Other - The City offers no-charge irrigation audits to residents, businesses and
Homeowners Associations. http://www.ci.chanhassen.mn.us/index.aspx?NID=1130
☒ Yes
☐ No
What are the results you have seen from the actions in Table 21 and how were results measured?
The City has had a conservation water rate structure in place for over 10 years. The City has been
progressively increasing the top tears of the water rates over the past 5 years. The City has also been
aggressive in finding leaks in the public distribution system. This year with the help of a Met. Council
grant, the City has started a rebate program for high efficiency appliances and smart irrigation systems.
Since 2007, the City has also had an active education program to promote the smart use of water. Also
since 2007, the City has offered a no-charge irrigation audit to residents, homeowners associations and
businesses.
It has been somewhat difficult to quantify the effectiveness of these programs since precipitation over
the last past 5 years summers have been above average. The City has seen a flat usage during the
City of Chanhassen 2040 Comprehensive Plan273
Local Water Supply Plan
39
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
winter months even with the community growth. This can be attributed to higher efficiency appliances
and fixtures.
A.Triggers for Allocation and Demand Reduction Actions
Complete Table 22 by checking each trigger below, as appropriate, and the actions to be taken at
various levels or stages of severity. Add additional rows to the table as needed.
Table 22. Short and Long-Term Demand Reduction Conditions, Triggers and Actions
Objective Triggers Actions
Protect Surface Water Flows Low stream flow
conditions
Reports of declining
wetland and lake levels
☒ Other: The City is not the
governing agency of
Surface water flows; work
with regulatory agency on
trigger thresholds.
Increase promotion of conservation
measures
☒ Other: Work with regulatory agency on
action plan.
Short-term demand reduction
(less than 1 year)
Extremely high seasonal
water demand (more than
double winter demand)
Loss of treatment capacity
☒ Lack of water in storage
State drought plan
Well interference
☐ Other: Loss of well
Adopt (if not already) and enforce the
critical water deficiency ordinance to
restrict or prohibit lawn watering,
vehicle washing, golf course and park
irrigation & other nonessential uses.
Supply augmentation through ____
Water allocation through____
☒ Meet with large water users to discuss
user’s contingency plan.
Long-term demand reduction
(>1 year)
Per capita demand
increasing
Total demand increase
(higher population or more
industry); Water level in
well(s) below elevation of
_____
☒ Other: _____________
Develop a critical water deficiency
ordinance that is or can be quickly
adopted to penalize lawn watering,
vehicle washing, golf course and park
irrigation & other nonessential uses.
Enact a water waste ordinance that
targets overwatering (causing water to
flow off the landscape into streets,
parking lots, or similar), watering
impervious surfaces (streets, driveways
or other hardscape areas), and
negligence of known leaks, breaks, or
malfunctions.
☒ Meet with large water users to discuss
user’s contingency plan.
☒ Enhanced monitoring and reporting:
audits, meters, billing, etc.
Governor’s “Critical Water
Deficiency Order” declared
☐ Describe – Declaration
declared
☒ Describe – City Council would approve a
water reduction plan to stop all non-
essential water use consistent with water
reduction goals in Table 18.
City of Chanhassen 2040 Comprehensive Plan274
Local Water Supply Plan
40
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
B. Conservation Objectives and Strategies – Key Benchmark For DNR
This section establishes water conservation objectives and strategies for eight major areas of water use.
Objective 1: Reduce Unaccounted (Non-Revenue) Water Loss to Less Than 10%
The Minnesota Rural Waters Association, the Metropolitan Council and the Department of Natural
Resources recommend that all water uses be metered. Metering can help identify high use locations
and times, along with leaks within buildings that have multiple meters.
It is difficult to quantify specific unmetered water use such as that associated with firefighting and
system flushing or system leaks. Typically, water suppliers subtract metered water use from total water
pumped to calculate unaccounted or non-revenue water loss.
Is your ten-year average (2005-2014) unaccounted Water Use in Table 2 higher than 10%?
☒ Yes No
What is your leak detection monitoring schedule? (e.g. monitor 1/2 of the city lines per year)
The City hires a leak detection service to bi-annually monitor about 1/2 of the cities distribution system.
Water Audits - Are intended to identify, quantify and verify water and revenue losses. The volume of
unaccounted-for water should be evaluated each billing cycle. The American Water Works Association
(AWWA) recommends that ten percent or less of pumped water is unaccounted-for water. Water audit
procedures are available from the AWWA and MN Rural Water Association www.mrwa.com. Drinking
Water Revolving Loan Funds are available for purchase of new meters when new plants are built.
What is the date of your most recent water audit? The City annual reviews unaccounted for water with
the DNR annual report.
Frequency of water audits: ☒ yearly ☐ other (specify frequency) Newer meters are
installed at all large water consumers locations. The City is actively replacing older water meters as
radios fail or their utility services are required.
Leak detection and survey: ☒ every year every other year periodic as needed
Year last leak detection survey completed: 2014
If Table 2 shows annual water losses over 10% or an increasing trend over time, describe what actions
will be taken to reach the <10% loss objective and within what timeframe.
Metering - AWWA recommends that every water supplier install meters to account for all water taken
into its system, along with all water distributed from its system at each customer’s point of service. An
effective metering program relies upon periodic performance testing, repair, maintenance or
City of Chanhassen 2040 Comprehensive Plan275
Local Water Supply Plan
41
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
replacement of all meters. AWWA also recommends that water suppliers conduct regular water audits
to ensure accountability. Some cities install separate meters for interior and exterior water use, but
some research suggests that this may not result in water conservation.
Complete Table 23 by adding the requested information regarding the number, types, testing and
maintenance of customer meters.
Table 23. Information About Customer Meters
Customer
Category
Number of
Customers
Number of
Metered
Connections
Number of
Automated
Meter
Readers
Meter
testing
intervals
(years)
Average age/meter
replacement schedule
(years)
Residential 7,586 7,586 7,586 None 21 / As needed
Irrigation meters 314 314 313 None 8 / As needed
Institutional 11 11 11 None 5 / As needed
Commercial 237 237 235 None 9 / As needed
Industrial 32 32 32 None 5 / As needed
Public Facilities 7 7 7 None 12 / As needed
Other 16 16 16 None 14 / As needed
TOTALS 8,203 8,203 8,200
For unmetered systems, describe any plans to install meters or replace current meters with advanced
technology meters. Provide an estimate of the cost to implement the plan and the projected water
savings from implementing the plan.
N/A
Table 24. Water Source Meters
Number of
Meters
Meter testing
schedule
(years)
Number of Automated
Meter Readers
Average age/meter
replacement schedule (years
Water Source
(wells/intakes)
13 5 13 10 / As needed
Treatment Plant 1 5 1 9 / As needed
Objective 2: Achieve Less than 75 Residential Gallons per Capita Demand (GPCD)
The 2002 average residential per capita demand in the Twin Cities Metropolitan area was 75 gallons per
capita per day.
Is your average 2010-2015 residential per capita water demand in Table 2 more than 75? ☒ Yes No
What was your 2005 – 2014 ten-year average residential per capita water demand? 88 g/person/day
Describe the water use trend over that timeframe:
City of Chanhassen 2040 Comprehensive Plan276
Local Water Supply Plan
42
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
The City believes the per capita water use is trending down however the annual use is highly dependent on
climatic variations from year to year.
Complete Table 25 by checking which strategies you will use to continue reducing residential per capita
demand and project a likely timeframe for completing each checked strategy (Select all that apply and
add rows for additional strategies):
Table 25. Strategies and Timeframe to Reduce Residential Per Capita Demand
Strategy to reduce residential per capita demand Timeframe for completing work
Revise city ordinances/codes to encourage or require
water efficient landscaping.
Proposing a daytime irrigation restriction
within the next year.
Revise city ordinance/codes to permit water reuse
options, especially for non-potable purposes like
irrigation, groundwater recharge, and industrial use.
Check with plumbing authority to see if internal
buildings reuse is permitted
Next 5 years
Revise ordinances to limit irrigation. Describe the
restricted irrigation plan:
Revise outdoor irrigation installations codes to require
high efficiency systems (e.g. those with soil moisture
sensors or programmable watering areas) in new
installations or system replacements.
Make water system infrastructure improvements Ongoing
Offer free or reduced cost water use audits) for
residential customers.
On-going. City currently offers free irrigation
audits for new residents, Home Owners’
Associations, and commercial users.
Implement a notification system to inform customers
when water availability conditions change.
Provide rebates or incentives for installing water
efficient appliances and/or fixtures indoors (e.g., low
flow toilets, high efficiency dish washers and washing
machines, showerhead and faucet aerators, water
softeners, etc.)
On-going. Through the Metropolitan Council
Water Efficiency Grant, the City will be offering
rebates for Energy Star clothes washing
machine through July of 2017.
Provide rebates or incentives to reduce outdoor water
use (e.g., turf replacement/reduction, rain gardens, rain
barrels, smart irrigation, outdoor water use meters, etc.)
On-going rebates offered through the
Metropolitan Council Water Efficiency Grant,
for WaterSense certified irrigation controllers
through July of 2017.
Identify supplemental Water Resources
Conduct audience-appropriate water conservation
education and outreach.
On-going. Educational events and
presentations at schools and community
events, educational articles in local
newspaper, newsletters, website, and social
media.
Describe other plans Work with local community partners and the
Metropolitan Council to start a West Metro
Water Supply Work Group.
This Group would:
City of Chanhassen 2040 Comprehensive Plan277
Local Water Supply Plan
43
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Strategy to reduce residential per capita demand Timeframe for completing work
•Promote the evaluation of water
conflict and well interface.
•Support collaborative efforts to
evaluate the likelihood of significant
declines in aquifer water levels.
•Collaborate to support local actions
that prevent the spread of
contamination.
•Identify opportunities for sharing
information, reducing duplicate work,
and partnering on projects that
improve understanding about aquifer
productivity and extent.
•Support collaborative efforts to
periodically review local water supply
risks and potential alternatives to
mitigate those risks.
Objective 3: Achieve at least a 1.5% per year water reduction for Institutional, Industrial,
Commercial, and Agricultural GPCD over the next 10 years or a 15% reduction in ten years.
Complete Table 26 by checking which strategies you will used to continue reducing non-residential
customer use demand and project a likely timeframe for completing each checked strategy (add rows
for additional strategies).
Where possible, substitute recycled water used in one process for reuse in another. (For example, spent
rinse water can often be reused in a cooling tower.) Keep in mind the true cost of water is the amount
on the water bill PLUS the expenses to heat, cool, treat, pump, and dispose of/discharge the water.
Don’t just calculate the initial investment. Many conservation retrofits that appear to be prohibitively
expensive are actually very cost-effective when amortized over the life of the equipment. Often
reducing water use also saves electrical and other utility costs. Note: As of 2015, water reuse, and is not
allowed by the state plumbing code, M.R. 4715 (a variance is needed). However several state agencies
are addressing this issue.
Table 26. Strategies and Timeframe to Reduce Institutional, Commercial Industrial, and Agricultural and Non-Revenue Use
Demand
Strategy to reduce total business, industry, agricultural demand Timeframe for completing work
Conduct a facility water use audit for both indoor and
outdoor use, including system components
On-going, free irrigation audits provided for
business, industry, agricultural, and
commercial users.
Install enhanced meters capable of automated readings
to detect spikes in consumption
On-going.
Compare facility water use to related industry
benchmarks, if available (e.g., meat processing, dairy,
fruit and vegetable, beverage, textiles, paper/pulp,
metals, technology, petroleum refining etc.),
N/A
Install water conservation fixtures and appliances or
change processes to conserve water
Repair leaking system components (e.g., pipes, valves) As needed.
City of Chanhassen 2040 Comprehensive Plan278
Local Water Supply Plan
44
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Strategy to reduce total business, industry, agricultural demand Timeframe for completing work
Investigate the reuse of reclaimed water (e.g.,
stormwater, wastewater effluent, process wastewater,
etc.)
On-going.
Reduce outdoor water use (e.g., turf replacement/
reduction, rain gardens, rain barrels, smart irrigation,
outdoor water use meters, etc.)
On-going.
Train employees how to conserve water On-going.
Implement a notification system to inform non-
residential customers when water availability conditions
change.
Rainwater catchment systems intended to supply uses
such as water closets, urinals, trap primers for floor
drains and floor sinks, industrial processes, water
features, vehicle washing facilities, cooling tower
makeup, and similar uses shall be approved by the
commissioner. Proposed plumbing code 4714.1702.1
http://www.dli.mn.gov/PDF/docket/4714rule.pdf
On-going.
Describe other plans: New topsoil requirements on all new
development, including business, commercial,
and industry.
Objective 4: Achieve a Decreasing Trend in Total Per Capita Demand
Include as Appendix 8 one graph showing total per capita water demand for each customer category
(i.e., residential, institutional, commercial, industrial) from 2005-2014 and add the calculated/estimated
linear trend for the next 10 years.
Describe the trend for each customer category; explain the reason(s) for the trends, and where trends
are increasing.
Decreased/flat use since 2014, largely due to annual precipitation at normal/above normal conditions.
Objective 5: Reduce Peak Day Demand so that the Ratio of Average Maximum day to the
Average Day is less than 2.6
Is the ratio of average 2005-2014 maximum day demand to average 2005-2014 average day demand
reported in Table 2 more than 2.6? ☐ Yes ☒ No
Calculate a ten year average (2005 – 2014) of the ratio of maximum day demand to average day
demand: 2.42
The position of the DNR has been that a peak day/average day ratio that is above 2.6 for in summer
indicates that the water being used for irrigation by the residents in a community is too large and that
efforts should be made to reduce the peak day use by the community.
City of Chanhassen 2040 Comprehensive Plan279
Local Water Supply Plan
45
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
It should be noted that by reducing the peak day use, communities can also reduce the amount of
infrastructure that is required to meet the peak day use. This infrastructure includes new wells, new
water towers which can be costly items.
Objective 6: Implement a Conservation Water Rate Structure and/or a Uniform Rate
Structure with a Water Conservation Program
City of Chanhassen 2040 Comprehensive Plan280
Local Water Supply Plan
46
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Water Conservation Program
Municipal water suppliers serving over 1,000 people are required to adopt demand reduction measures
that include a conservation rate structure, or a uniform rate structure with a conservation program that
achieves demand reduction. These measures must achieve demand reduction in ways that reduce
water demand, water losses, peak water demands, and nonessential water uses. These measures must
be approved before a community may request well construction approval from the Department of
Health or before requesting an increase in water appropriations permit volume (Minnesota Statutes,
section 103G.291, Subd. 3 and 4). Rates should be adjusted on a regular basis to ensure that revenue of
the system is adequate under reduced demand scenarios. If a municipal water supplier intends to use a
Uniform Rate Structure, a community-wide Water Conservation Program that will achieve demand
reduction must be provided.
Current Water Rates
Include a copy of the actual rate structure in Appendix 9 or list current water rates including
base/service fees and volume charges below.
Volume included in base rate or service charge: ___5,000__ gallons or ____ cubic feet ___ other
Frequency of billing: ☒ Monthly (Optional) Bimonthly Quarterly Other: Monthly
billing upon request.
Water Rate Evaluation Frequency: every year every ___ years no schedule
Date of last rate change: 1/1/2016
Table 27. Rate structures for each customer category (Select all that apply and add additional rows as needed)
Customer
Category
Conservation Billing Strategies
in Use *
Conservation Neutral
Billing Strategies in Use **
Non-Conserving Billing
Strategies in Use ***
Residential Monthly Billing
Increasing block rates (volume
tiered rates)
Seasonal rates
Time of Use rates
Water bills reported in
gallons
Individualized goal rates
Excess Use rates
Drought surcharge
Use water bill to provide
comparisons
Service charge not based on
water volume
Other (describe)
Uniform
Odd/Even day watering
Service charge based on water
volume
Declining block
Flat
Other (describe)
Commercial/
Industrial/
Institutional
Monthly Billing
Increasing block rates
Seasonal rates
Time of Use rates
Bill water use in gallons
Uniform Service charge based on water
volume
Declining block
Flat
Other (describe)
City of Chanhassen 2040 Comprehensive Plan281
Local Water Supply Plan
47
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Customer
Category
Conservation Billing Strategies
in Use *
Conservation Neutral
Billing Strategies in Use **
Non-Conserving Billing
Strategies in Use ***
Individualized goal rates
Excess Use rates
Drought surcharge
Use water bill to provide
comparisons
Service charge not based on
water volume
Other (describe): City uses
meter software to detect leaks,
then sends this notification to
the user.
Other
* Rate Structures components that may promote water conservation:
•Monthly billing: is encouraged to help people see their water usage so they can consider changing
behavior.
•Increasing block rates (also known as a tiered residential rate structure): Typically, these have at least
three tiers: should have at least three tiers.
o The first tier is for the winter average water use.
o The second tier is the year-round average use, which is lower than typical summer use. This rate
should be set to cover the full cost of service.
o The third tier should be above the average annual use and should be priced high enough to
encourage conservation, as should any higher tiers. For this to be effective, the difference in
block rates should be significant.
•Seasonal rate: higher rates in summer to reduce peak demands.
•Time of Use rates: lower rates for off peak water use.
•Bill water use in gallons: this allows customers to compare their use to average rates.
•Individualized goal rates: typically used for industry, business or other large water users to promote
water conservation if they keep within agreed upon goals. Excess Use rates: if water use goes above an
agreed upon amount this higher rate is charged.
•Drought surcharge: an extra fee is charged for guaranteed water use during drought.
•Use water bill to provide comparisons: simple graphics comparing individual use over time or compare
individual use to others.
•Service charge or base fee that does not include a water volume – a base charge or fee to cover universal
city expenses that are not customer dependent and/or to provide minimal water at a lower rate (e.g., an
amount less than the average residential per capita demand for the water supplier for the last 5 years).
•Emergency rates -A community may have a separate conservation rate that only goes into effect when
the community or governor declares a drought emergency. These higher rates can help to protect the city
budgets during times of significantly less water usage.
**Conservation Neutral**
•Uniform rate: rate per unit used is the same regardless of the volume used.
•Odd/even day watering –This approach reduces peak demand on a daily basis for system operation, but
it does not reduce overall water use.
*** Non-Conserving ***
•Service charge or base fee with water volume: an amount of water larger than the average residential
per capita demand for the water supplier for the last 5 years.
•Declining block rate: the rate per unit used decreases as water use increases.
•Flat rate: one fee regardless of how much water is used (usually unmetered).
City of Chanhassen 2040 Comprehensive Plan282
Local Water Supply Plan
48
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Provide justification for any conservation neutral or non-conserving rate structures. If intending to adopt
a conservation rate structure, include the timeframe to do so:
N/A
Objective 7: Additional strategies to Reduce Water Use and Support Wellhead Protection
Planning
Development and redevelopment projects can provide additional water conservation opportunities,
such as the actions listed below. If a Uniform Rate Structure is in place, the water supplier must provide
a Water Conservation Program that includes at least two of the actions listed below. Check those
actions that you intent to implement within the next 10 years.
Table 28. Additional Strategies to Reduce Water Use & Support Wellhead Protection
Participate in the GreenStep Cities Program, including implementation of at least one of the 20
“Best Practices” for water
Prepare a Master Plan for Smart Growth (compact urban growth that avoids sprawl) Prepare a Comprehensive Open Space Plan (areas for parks, green spaces, natural areas)
Adopt a Water Use Restriction Ordinance (lawn irrigation, car washing, pools, etc.)
Adopt an Outdoor Lawn Irrigation Ordinance
Adopt a Private well Ordinance (private wells in a city must comply with water restrictions) Implement a Stormwater Management Program Adopt Non-Zoning Wetlands Ordinance (can further protect wetlands beyond state/federal
laws-for vernal pools, buffer areas, restrictions on filling or alterations)
Adopt a Water Offset Program (primarily for new development or expansion) Implement a Water Conservation Outreach Program
Hire a Water Conservation Coordinator (part-time) Implement a Rebate program for water efficient appliances, fixtures, or outdoor water
management Other: In 2016 the City will be replacing traditional irrigation controllers with a central,
weather-based controller, WaterSense certified by the EPA for all city-irrigated parks and
greenspace. The City is also conducting studies on areas within the City where stormwater re-
use projects can be implemented, both public and private. The City has adopted an ordinance
to require 6” of topsoil for new developments. This ordinance also include requiring the builder
to deposit cash escrow with the City and have the City inspect the yard before sod is installed.
Objective 8: Tracking Success: How will you track or measure success through the next ten
years?
The City will continue to track per capita water use as well as trends in high-user consumption and
commercial/industrial use, taking annual precipitation data and trends into account. Trends are then to
be studied, and conservation programs and efforts that should be adjusted accordingly. Discussions
with the District Hydrologist will also be incorporated as needed. Recommendations will then be made
to City Council for implementation.
City of Chanhassen 2040 Comprehensive Plan283
Local Water Supply Plan
49
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Tip: The process to monitor demand reduction and/or a rate structure includes:
a)The DNR District Hydrologist or Groundwater Appropriation Hydrologist will call or visit the
community the first 1-3 years after the water supply plan is completed.
b)They will discuss what activities the community is doing to conserve water and if they feel their
actions are successful. The Water Supply Plan, Part 3 tables and responses will guide the discussion.
For example, they will discuss efforts to reduce unaccounted for water loss if that is a problem, or go
through Tables 33, 34 and 35 to discuss new initiatives.
c)The city representative and the hydrologist will discuss total per capita water use, residential per
capita water use, and business/industry use. They will note trends.
d)They will also discuss options for improvement and/or collect case studies of success stories to share
with other communities. One option may be to change the rate structure, but there are many other
paths to successful water conservation.
e)If appropriate, they will cooperatively develop a simple work plan for the next few years, targeting a
couple areas where the city might focus efforts.
A.Regulation
Complete Table 29 by selecting which regulations are used to reduce demand and improve water
efficiencies. Add additional rows as needed.
Copies of adopted regulations or proposed restrictions or should be included in Appendix 10 (a list with
hyperlinks is acceptable).
Table 29. Regulations for Short-Term Reductions in Demand and Long-Term Improvements in Water Efficiencies
Regulations Utilized When is it applied (in effect)?
Rainfall sensors required on landscape irrigation systems Ongoing
Seasonal
Only during declared Emergencies
Water efficient plumbing fixtures required New Development
Replacement
Rebate Programs
Critical/Emergency Water Deficiency ordinance Only during declared Emergencies
Watering restriction requirements (time of day, allowable days, etc.) Odd/Even
2 days/week
Only during declared Emergencies
Water waste prohibited (for example, having a fine for irrigators
spraying on the street)
Ongoing
Seasonal
Only during declared Emergencies
Limitations on turf areas (requiring lots to have 10% - 25% of the
space in natural areas)
New Development
Shoreland/zoning
Other
Soil preparation requirements (after construction, requiring topsoil
to be applied to promote good root growth)
New Development
Construction Projects
Other
Tree ratios (requiring a certain number of trees per square foot of
lawn)
New development
Shoreland/zoning
Other
Permit to fill swimming pool and/or requiring pools to be covered (to
prevent evaporation)
Ongoing
Seasonal
Only during declared Emergencies
City of Chanhassen 2040 Comprehensive Plan284
Local Water Supply Plan
50
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Regulations Utilized When is it applied (in effect)?
Ordinances that permit stormwater irrigation, reuse of water, or
other alternative water use (Note: be sure to check current plumbing
codes for updates)
Describe
Encouraged, however no ordinance in
place.
B.Retrofitting Programs
Education and incentive programs aimed at replacing inefficient plumbing fixtures and appliances can
help reduce per capita water use, as well as energy costs. It is recommended that municipal water
suppliers develop a long-term plan to retrofit public buildings with water efficient plumbing fixtures and
appliances. Some water suppliers have developed partnerships with organizations having similar
conservation goals, such as electric or gas suppliers, to develop cooperative rebate and retrofit
programs.
A study by the AWWA Research Foundation (Residential End Uses of Water, 1999) found that the
average indoor water use for a non-conserving home is 69.3 gallons per capita per day (gpcd). The
average indoor water use in a conserving home is 45.2 gpcd and most of the decrease in water use is
related to water efficient plumbing fixtures and appliances that can reduce water, sewer and energy
costs. In Minnesota, certain electric and gas providers are required (Minnesota Statute 216B.241) to
fund programs that will conserve energy resources and some utilities have distributed water efficient
showerheads to customers to help reduce energy demands required to supply hot water.
Retrofitting Programs
Complete Table 30 by checking which water uses are targeted, the outreach methods used, the
measures used to identify success, and any participating partners.
Table 30. Retrofitting Programs (Select All That Apply)
Water Use Targets Outreach Methods Partners
low flush toilets,
toilet leak tablets,
low flow showerheads,
faucet aerators;
education about
free distribution of
rebate for
other
Gas company
Electric company
Watershed organization
water conserving washing machines,
dish washers,
water softeners;
education about
free distribution of
rebate for
other
Gas company
Electric company
Watershed organization
rain gardens,
rain barrels,
native/drought tolerant landscaping, etc.
education about
free distribution of
rebate for
other
Gas company
Electric company
Watershed organization
Briefly discuss measures of success from the above table (e.g. number of items distributed, dollar value
of rebates, gallons of water conserved, etc.):
Number of rebates are tracked quarterly, along with cost, and estimated water savings. Number of
coupons for rain barrels are tracked annually. Drought-tolerant landscape rebates are tracked for area,
cost, and number of, annually. Education is measured in number of messages/articles/pamphlets
City of Chanhassen 2040 Comprehensive Plan285
Local Water Supply Plan
51
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
distributed, including social media, annually. The City is currently participating in the Metropolitan
Council’s Water Efficiency Grant Program.
C.Education and Information Programs
Customer education should take place in three different circumstances. First, customers should be
provided information on how to conserve water and improve water use efficiencies. Second,
information should be provided at appropriate times to address peak demands. Third, emergency
notices and educational materials about how to reduce water use should be available for quick
distribution during an emergency.
Proposed Education Programs
Complete Table 31 by selecting which methods are used to provide water conservation and information,
including the frequency of program components. Select all that apply and add additional lines as
needed.
City of Chanhassen 2040 Comprehensive Plan286
Local Water Supply Plan
52
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Table 31. Current and Proposed Education Programs
Education Methods General summary of
topics
#/Year Frequency
Billing inserts or tips printed on the actual bill Indoor fixture leaks
500
average
Ongoing
Seasonal
Only during
declared emergencies
Consumer Confidence Reports Drinking Water
Quality/Water
Conservation
25,000
average
Ongoing
Seasonal
Only during
declared emergencies
Press releases to traditional local news outlets
(e.g., newspapers, radio and TV)
Water Conservation
Programs/Stormwater
1-2 Ongoing
Seasonal
Only during
declared emergencies
Social media distribution (e.g., emails,
Facebook, Twitter)
Water Conservation
tips/Programs
offered/Stormwater
10 avg.
Ongoing
Seasonal
Only during
declared emergencies
Paid advertisements (e.g., billboards, print
media, TV, radio, web sites, etc.)
Local Newspaper 1-2 Ongoing
Seasonal
Only during
declared emergencies
Presentations to community groups Water
Conservation/Stormwater
2-3 Ongoing
Seasonal
Only during
declared emergencies
Staff training Water Conservation 3-4 Ongoing
Seasonal
Only during
declared emergencies
Facility tours Ongoing
Seasonal
Only during
declared emergencies
Displays and exhibits Water Conservation 3-4 Ongoing
Seasonal
Only during
declared emergencies
Marketing rebate programs (e.g., indoor
fixtures & appliances and outdoor practices)
City rebate programs 12-15 Ongoing
Seasonal
Only during
declared emergencies
Community news letters Water Conservation 4 Ongoing
Seasonal
Only during
declared emergencies
Direct mailings (water audit/retrofit kits,
showerheads, brochures)
Ongoing
Seasonal
Only during
declared emergencies
City of Chanhassen 2040 Comprehensive Plan287
Local Water Supply Plan
53
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Education Methods General summary of
topics
#/Year Frequency
Information kiosk at utility and public
buildings
Ongoing
Seasonal
Only during
declared emergencies
Public Service Announcements Ongoing
Seasonal
Only during
declared emergencies
Cable TV Programs Ongoing
Seasonal
Only during
declared emergencies
Demonstration projects (landscaping or
plumbing)
Water re-use 1 Ongoing
Seasonal
Only during
declared emergencies
K-12 Education programs (Project Wet,
Drinking Water Institute, presentations)
Project Wet, Water
Conservation
2 Ongoing
Seasonal
Only during
declared emergencies
Community Events (children’s water festivals,
environmental fairs)
4th of July celebration:
Float in parade and
Display/booth on Water
Conservation. Partner with
other agencies throughout
the year to provide
presentations/displays on
water conservation &
stormwater at community
events and classes
including Children’s Water
Festival, MN Landscape
Arboretum Events, etc.
4-5 Ongoing
Seasonal
Only during
declared emergencies
Community education classes City partners with the MN
Landscape Arboretum to
provide classes on water
conservation.
0-1 Ongoing
Seasonal
Only during
declared emergencies
Water Week promotions Ongoing
Seasonal
Only during
declared emergencies
Website (include address:
http://www.ci.chanhassen.mn.us/index.aspx?
NID=410 )
Water Conservation Ongoing
Seasonal
Only during
declared emergencies
Targeted efforts (large volume users, users
with large increases)
Letters to high-users,
education with water bill
to users with large
increases. Encourage
commercial high-users to
1-2 Ongoing
Seasonal
Only during
declared emergencies
City of Chanhassen 2040 Comprehensive Plan288
Local Water Supply Plan
54
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Education Methods General summary of
topics
#/Year Frequency
partner with the City on
stormwater re-use
projects.
Notices of ordinances Ongoing
Seasonal
Only during
declared emergencies
Emergency conservation notices Conservation, additional
water use restrictions.
Ongoing
Seasonal
Only during
declared emergencies
Other: Ongoing
Seasonal
Only during
declared emergencies
Briefly discuss what future education and information activities your community is considering in the
future:
The City plans to expand on its community education outlets including cable TV, social media, and
events.
City of Chanhassen 2040 Comprehensive Plan289
Local Water Supply Plan
55
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Part 4. ITEMS FOR METROPOLITAN AREA COMMUNITIES
Minnesota Statute 473.859 requires WSPs to be completed for all local units of
government in the seven-county Metropolitan Area as part of the local
comprehensive planning process.
Much of the information in Parts 1-3 addresses water demand for the next 10 years. However,
additional information is needed to address water demand through 2040, which will make the WSP
consistent with the Metropolitan Land Use Planning Act, upon which the local comprehensive plans are
based.
This Part 4 provides guidance to complete the WSP in a way that addresses plans for water supply
through 2040.
A.Water Demand Projections through 2040
Complete Table 7 in Part 1D by filling in information about long-term water demand projections through
2040. Total Community Population projections should be consistent with the community’s system
statement, which can be found on the Metropolitan Council’s website and which was sent to the
community in September 2015.
Projected Average Day, Maximum Day, and Annual Water Demands may either be calculated using the
method outlined in Appendix 2 of the 2015 Master Water Supply Plan or by a method developed by the
individual water supplier.
B.Potential Water Supply Issues
Complete Table 10 in Part 1E by providing information about the potential water supply issues in your
community, including those that might occur due to 2040 projected water use.
The Master Water Supply Plan provides information about potential issues for your community in
Appendix 1 (Water Supply Profiles). This resource may be useful in completing Table 10.
You may document results of local work done to evaluate impact of planned uses by attaching a
feasibility assessment or providing a citation and link to where the plan is available electronically.
C.Proposed Alternative Approaches to Meet Extended Water Demand
Projections
Complete Table 12 in Part 1F with information about potential water supply infrastructure impacts (such
as replacements, expansions or additions to wells/intakes, water storage and treatment capacity,
distribution systems, and emergency interconnections) of extended plans for development and
redevelopment, in 10-year increments through 2040. It may be useful to refer to information in the
community’s local Land Use Plan, if available.
Complete Table 14 in Part 1F by checking each approach your community is considering to meet future
demand. For each approach your community is considering, provide information about the amount of
City of Chanhassen 2040 Comprehensive Plan290
Local Water Supply Plan
56
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
future water demand to be met using that approach, the timeframe to implement the approach,
potential partners, and current understanding of the key benefits and challenges of the approach.
As challenges are being discussed, consider the need for: evaluation of geologic conditions (mapping,
aquifer tests, modeling), identification of areas where domestic wells could be impacted, measurement
and analysis of water levels & pumping rates, triggers & associated actions to protect water levels, etc.
D.Value-Added Water Supply Planning Efforts (Optional)
The following information is not required to be completed as part of the local water supply plan, but
completing this can help strengthen source water protection throughout the region and help
Metropolitan Council and partners in the region to better support local efforts.
Source Water Protection Strategies
Does a Drinking Water Supply Management Area for a neighboring public water supplier overlap your
community? Yes No
If you answered no, skip this section. If you answered yes, please complete Table 32 with information
about new water demand or land use planning-related local controls that are being considered to
provide additional protection in this area.
Table 32. Local controls and schedule to protect Drinking Water Supply Management Areas
Local Control Schedule to
Implement
Potential Partners
None at this time In conjunction with
future West Metro
Water Supply Group
Future West Metro
Water Supply Group
Comprehensive planning that guides development in
vulnerable drinking water supply management areas
Zoning overlay
Other:
Technical assistance
From your community’s perspective, what are the most important topics for the Metropolitan Council to
address, guided by the region’s Metropolitan Area Water Supply Advisory Committee and Technical
Advisory Committee, as part of its ongoing water supply planning role?
Coordination of state, regional and local water supply planning roles
Regional water use goals
Water use reporting standards
Regional and sub-regional partnership opportunities
Identifying and prioritizing data gaps and input for regional and sub-regional analyses
Others: _________________________________________________________________
City of Chanhassen 2040 Comprehensive Plan291
Local Water Supply Plan
57
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
GLOSSARY
Agricultural/Irrigation Water Use - Water used for crop and non-crop irrigation, livestock watering,
chemigation, golf course irrigation, landscape and athletic field irrigation.
Average Daily Demand - The total water pumped during the year divided by 365 days.
Calcareous Fen - Calcareous fens are rare and distinctive wetlands dependent on a constant supply of
cold groundwater. Because they are dependent on groundwater and are one of the rarest natural
communities in the United States, they are a protected resource in MN. Approximately 200 have been
located in Minnesota. They may not be filled, drained or otherwise degraded.
Commercial/Institutional Water Use - Water used by motels, hotels, restaurants, office buildings,
commercial facilities and institutions (both civilian and military). Consider maintaining separate
institutional water use records for emergency planning and allocation purposes. Water used by multi-
family dwellings, apartment buildings, senior housing complexes, and mobile home parks should be
reported as Residential Water Use.
Commercial/Institutional/Industrial (C/I/I) Water Sold - The sum of water delivered for commercial/
institutional or industrial purposes.
Conservation Rate Structure - A rate structure that encourages conservation and may include increasing
block rates, seasonal rates, time of use rates, individualized goal rates, or excess use rates. If a
conservation rate is applied to multifamily dwellings, the rate structure must consider each residential
unit as an individual user. A community may have a separate conservation rate that only goes into
effect when the community or governor declares a drought emergency. These higher rates can help to
protect the city budgets during times of significantly less water usage.
Date of Maximum Daily Demand - The date of the maximum (highest) water demand. Typically this is a
day in July or August.
Declining Rate Structure - Under a declining block rate structure, a consumer pays less per additional
unit of water as usage increases. This rate structure does not promote water conservation.
Distribution System - Water distribution systems consist of an interconnected series of pipes, valves,
storage facilities (water tanks, water towers, reservoirs), water purification facilities, pumping stations,
flushing hydrants, and components that convey drinking water and meeting fire protection needs for
cities, homes, schools, hospitals, businesses, industries and other facilities.
Flat Rate Structure - Flat fee rates do not vary by customer characteristics or water usage. This rate
structure does not promote water conservation.
Industrial Water Use - Water used for thermonuclear power (electric utility generation) and other
industrial use such as steel, chemical and allied products, paper and allied products, mining, and
petroleum refining.
City of Chanhassen 2040 Comprehensive Plan292
Local Water Supply Plan
58
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Low Flow Fixtures/Appliances - Plumbing fixtures and appliances that significantly reduce the amount
of water released per use are labeled “low flow”. These fixtures and appliances use just enough water
to be effective, saving excess, clean drinking water that usually goes down the drain.
Maximum Daily Demand - The maximum (highest) amount of water used in one day.
Metered Residential Connections - The number of residential connections to the water system that
have meters. For multifamily dwellings, report each residential unit as an individual user.
Percent Unmetered/Unaccounted For - Unaccounted for water use is the volume of water withdrawn
from all sources minus the volume of water delivered. This value represents water “lost” by
miscalculated water use due to inaccurate meters, water lost through leaks, or water that is used but
unmetered or otherwise undocumented. Water used for public services such as hydrant flushing, ice
skating rinks, and public swimming pools should be reported under the category “Water Supplier
Services”.
Population Served - The number of people who are served by the community’s public water supply
system. This includes the number of people in the community who are connected to the public water
supply system, as well as people in neighboring communities who use water supplied by the
community’s public water supply system. It should not include residents in the community who have
private wells or get their water from neighboring water supply.
Residential Connections - The total number of residential connections to the water system. For
multifamily dwellings, report each residential unit as an individual user.
Residential Per Capita Demand - The total residential water delivered during the year divided by the
population served divided by 365 days.
Residential Water Use - Water used for normal household purposes such as drinking, food preparation,
bathing, washing clothes and dishes, flushing toilets, and watering lawns and gardens. Should include all
water delivered to single family private residences, multi-family dwellings, apartment buildings, senior
housing complexes, mobile home parks, etc.
Smart Meter - Smart meters can be used by municipalities or by individual homeowners. Smart
metering generally indicates the presence of one or more of the following:
•Smart irrigation water meters are controllers that look at factors such as weather, soil, slope,
etc. and adjust watering time up or down based on data. Smart controllers in a typical summer
will reduce water use by 30%-50%. Just changing the spray nozzle to new efficient models can
reduce water use by 40%.
•Smart Meters on customer premises that measure consumption during specific time periods and
communicate it to the utility, often on a daily basis.
•A communication channel that permits the utility, at a minimum, to obtain meter reads on
demand, to ascertain whether water has recently been flowing through the meter and onto the
City of Chanhassen 2040 Comprehensive Plan293
Local Water Supply Plan
59
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
premises, and to issue commands to the meter to perform specific tasks such as disconnecting
or restricting water flow.
Total Connections - The number of connections to the public water supply system.
Total Per Capita Demand - The total amount of water withdrawn from all water supply sources during
the year divided by the population served divided by 365 days.
Total Water Pumped - The cumulative amount of water withdrawn from all water supply sources during
the year.
Total Water Delivered - The sum of residential, commercial, industrial, institutional, water supplier
services, wholesale and other water delivered.
Ultimate (Full Build-Out) - Time period representing the community’s estimated total amount and
location of potential development, or when the community is fully built out at the final planned density.
Unaccounted (Non-revenue) Loss - See definitions for “percent unmetered/unaccounted for loss”.
Uniform Rate Structure - A uniform rate structure charges the same price-per-unit for water usage
beyond the fixed customer charge, which covers some fixed costs. The rate sends a price signal to the
customer because the water bill will vary by usage. Uniform rates by class charge the same price-per-
unit for all customers within a customer class (e.g. residential or non-residential). This price structure is
generally considered less effective in encouraging water conservation.
Water Supplier Services - Water used for public services such as hydrant flushing, ice skating rinks,
public swimming pools, city park irrigation, back-flushing at water treatment facilities, and/or other
uses.
Water Used for Nonessential Purposes - Water used for lawn irrigation, golf course and park irrigation,
car washes, ornamental fountains, and other non-essential uses.
Wholesale Deliveries - The amount of water delivered in bulk to other public water suppliers.
City of Chanhassen 2040 Comprehensive Plan294
Local Water Supply Plan
60
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Acronyms and Initialisms
AWWA – American Water Works Association
C/I/I – Commercial/Institutional/Industrial
CIP – Capital Improvement Plan
GIS – Geographic Information System
GPCD – Gallons per capita per day
GWMA – Groundwater Management Area – North and East Metro, Straight River, Bonanza,
MDH – Minnesota Department of Health
MGD – Million gallons per day
MG – Million gallons
MGL – Maximum Contaminant Level
MnTAP – Minnesota Technical Assistance Program (University of Minnesota)
MPARS – MN/DNR Permitting and Reporting System (new electronic permitting system)
MRWA – Minnesota Rural Waters Association
SWP – Source Water Protection
WHP – Wellhead Protection
City of Chanhassen 2040 Comprehensive Plan295
Local Water Supply Plan
61
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
APPENDICES TO BE SUBMITTED BY THE WATER SUPPLIER
Appendix 1: Well records and maintenance summaries – see Part 1C
Include copies of well records and maintenance summary for each well that has occurred since your last
approved plan in 2006
Appendix 2: Water level monitoring plan – see Part 1E
Appendix 3: Water level graphs for each water supply well - see Part 1E
Appendix 4: Capital Improvement Plan - see Part 1E
Appendix 5: Emergency Telephone List – see Part 2C
Appendix 6: Cooperative Agreements for Emergency Services – see Part 2C
Appendix 7: Municipal Critical Water Deficiency Ordinance – see Part 2C
Appendix 8: Graph showing annual per capita water demand for each
customer category during the last ten-years – see Part 3 Objective 4
Appendix 9: Water Rate Structure – see Part 3 Objective 6
Appendix 10: Adopted or proposed regulations to reduce demand or improve
water efficiency – see Part 3 Objective 7
Appendix 11: Implementation Checklist – summary of all the actions that a
community is doing, or proposes to do, including estimated implementation
dates – see www.mndnr.gov/watersupplyplans
City of Chanhassen 2040 Comprehensive Plan296
Local Water Supply Plan
62
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 1: Well Records and Maintenance Summaries
School Well – Sealed 4/6/11 #292626.
Well #2 - Pulled and inspected, televised, various items repaired replaced, pump setting
lowered from 180’ to 220’- July 2007. Pulled and inspected various items repaired/replaced -
March 2016.
Well #3 - Pump set lowered 40 feet - May 2008.
Well #4 - Pulled and inspected, televised, various items repaired/replaced - April 2010. New
VFD installed 2010. New well flow meter installed Feb 2016.
Well #5 - Inactive well, Maintenance Permit # 377792.
Well #6 - Inactive well, Maintenance Permit # 377779.
Well #7 - Pulled and inspected, televised, various items repaired/replaced - 2008. Installed
emergency transfer switch and generator plugs for emergency generation - June 2009.
Installed new exterior roof - April 2016. Installed new VFD - November 2016.
Well #9 - Pulled inspected, televised, various items repaired/replaced - May 2011.
Well #10 - Installed - April 2006. Screen cleaned - March 2010. VFD replaced - January 2010.
Well #11 - Installed March 2006.
Well #12 - Installed June 2008.
Well #13 - Installed August 2008.
Well #14 - Installed May 2010.
Well #15 - Installed March 2015.
City of Chanhassen 2040 Comprehensive Plan297
Local Water Supply Plan
63
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 2: Water Level Monitoring Plan
MN Unique Well #
or Surface Water ID
Type of monitoring
point
Monitoring program Frequency of
monitoring
Monitoring Method
Unique ID #220976
Well #2
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #200195
Well #3
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #180913
Well #4
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #471308
Well #5
X production well
(maintenance
permit well)
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
X annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #494519
Well #6
X production well
(maintenance
permit well)
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
hourly
daily
X monthly
quarterly
annually
SCADA
X grab sampling
steel tape
stream gauge
Unique #541545
Well #7
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #578953
Well #8
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #709304
Well #9
X production well
observation well
source water
intake
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
X SCADA
grab sampling
steel tape
stream gauge
City of Chanhassen 2040 Comprehensive Plan298
Local Water Supply Plan
64
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
MN Unique Well #
or Surface Water ID
Type of monitoring
point
Monitoring program Frequency of
monitoring
Monitoring Method
source water
reservoir
annually
Unique #737048
Well #10
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #737049
Well #11
175 W78th St.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #760936
Well #12
7610 S. Shore Dr.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #760937
Well #13
55 Lake Dr. E.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID #775541
Well #14
730 Lake Dr.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique ID # 810696
Well #15
1700 Lake Lucy Rd.
X production well
observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #775542
Monitoring Well A
9405 Great Plains
Blvd.
production well
X observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
Unique #
Monitoring Well B
9405 Great Plains
Blvd.
production well
X observation well
source water
intake
source water
reservoir
Routine MDH
sampling
X Routine water
utility sampling
other
X continuous
hourly
daily
monthly
quarterly
annually
X SCADA
grab sampling
steel tape
stream gauge
City of Chanhassen 2040 Comprehensive Plan299
Local Water Supply Plan
65
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 3 – Water Level Graphs for Each Water Supply Well
City of Chanhassen 2040 Comprehensive Plan300
Local Water Supply Plan
66
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
City of Chanhassen 2040 Comprehensive Plan301
Local Water Supply Plan
67
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
City of Chanhassen 2040 Comprehensive Plan302
Local Water Supply Plan
68
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
City of Chanhassen 2040 Comprehensive Plan303
Local Water Supply Plan
69
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
City of Chanhassen 2040 Comprehensive Plan304
Local Water Supply Plan
70
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 4: Capital Improvement Plan
City of Chanhassen 2040 Comprehensive Plan305
Local Water Supply Plan
71
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 5: Emergency Telephone List
Chanhassen Utilities
Emergency Telephone List
Emergency Response Team Name Work Telephone Alternate Telephone
Emergency Response Lead Kevin Crooks 952-227-1311 612-490-7776
Alternate Emergency
Response Lead
Brett Martinson 952-227-1313 612-490-8705
Water Operator Craig Carlson 952-227-1701 612-217-3442
Alternate Water Operator Jerry Johnson 952-227-1300 612-369-3461
Public Communications Chelsea Petersen 952-227-1118 651-319-1350
State and Local Emergency
Response Contacts
Name Work Telephone Alternate Telephone
State Incident Duty Officer Minnesota Duty Officer 800/422-0798 Out State 651-649-5451 Metro
County Emergency Director Carver County Sheriff Dept.911 911
National Guard Minnesota Duty Officer 800/422-0798 Out State 651-649-5451 Metro
Mayor/Board Chair Denny Laufenburger 952-227-1100
Fire Chief Don Johnson 952-227-1152 952-607-7244
Sheriff Carver County Sheriff 911 911
Police Chief Carver County Sheriff 911 911
Ambulance 911 911 911
Hospital 212 Medical Center 952-361-2447
State and Local Agencies Name Work Telephone Alternate Telephone
MDH District Engineer Amy Lynch 507-344-2713 507-990-2157
MDH Drinking Water Protection 651-201-4700
State Testing Laboratory Minnesota Duty Officer 800/422-0798 Out State 651-649-5451 Metro
MPCA Municipal Wastewater 681-296-6300 800-657-3864
DNR Area Hydrologist Jack Gleason 651-259-5764
County Water Planner Carver County Soil and Water (952) 466-5230
Utilities Name Work Telephone Alternate Telephone
Electric Company Xcel Energy 800-481-4700 800-641-4400
Gas Company Centerpoint Energy 612-321-4939
Telephone Company Centurylink 952-222-3496
Gopher State One Call Utility Locations 800-252-1166 651-454-0002
Highway Department MnDOT 651-234-7919
Mutual Aid Agreements Name Work Telephone Alternate Telephone
Emergency Water Connection Eden Prairie 952-294-5906 952-646-8530
Emergency Water Connection Chaska 952-227-7733 952-448-4335
Emergency Water Connection Shorewood 952-960-7913 952-292-2970
Materials HD Supply 952-974-8115 952-937-9666
Materials Ferguson Waterworks 763-560-5200
Technical/Contracted
Services/Supplies
Name Work Telephone Alternate Telephone
MRWA Technical Services MN Rural Water Association 800-367-6792
Well Driller/Repair EH Renner 763-427-6100
Pump Repair General Repair Service 651-766-0874 800-767-5151
Electrician A-1 Electric 952-442-5332
Backhoe Parrott Excavating 612-290-7346
Chemical Feed Hawkins Chemical 612-802-4562
Generator Ziegler 952-887-4525
Laboratory Engel Water Testing 952-955-1800
City of Chanhassen 2040 Comprehensive Plan306
Local Water Supply Plan
72
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 6: Cooperative Agreements for Emergency Services
None – No local Agreement to attach.
City of Chanhassen 2040 Comprehensive Plan307
Local Water Supply Plan
73
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 7: Municipal Critical Water Deficiency Ordinance
Sec. 19-28. - Water use restriction.
(a) Use of the city water supply system for lawn and garden sprinkling, irrigation, car washing or
other nonpotable uses shall be limited to an odd-even schedule corresponding to property
address, effective each year from May 1 to September 30. Whenever the city council or, on
a temporary basis, the public works director and/or the city manager or city manager's
designee, shall determine that a shortage of the water supply threatens the city, they may
further limit the days and hours during which water may be used from the city water supply
system. Special permit consideration will be given for those property owners with new seed
or sod if in the opinion of the public works director sufficient water for such permits is
available.
City of Chanhassen 2040 Comprehensive Plan308
Local Water Supply Plan
74
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 8: Annual Per Capita Water Demand For Each Customer
Category During The Last Ten Years
*Due to Finance Dept. software update only six years of accurate data available.
City of Chanhassen 2040 Comprehensive Plan309
Local Water Supply Plan
75
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 9: Water Rate Structure
CITY OF CHANHASSEN
WATER RATE STRUCTURE
UTILITY RATES (AS OF JANUARY 01, 2016):
FLAT RATE (REGARDLESS IF WATER IS USED OR NOT)$8.43
FIRST 6,000 GALLONS (PER 1,000)$1.16
6,001-24,000 GALLONS (PER 1,000)$2.32
24,001-48,000 GALLONS (PER 1,000)$2.90
48,001-99,000 GALLONS (PER 1,000)$3.37
OVER 99,001 GALLONS (PER 1,000)$4.28
City of Chanhassen 2040 Comprehensive Plan310
Local Water Supply Plan
76
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 10: Adopted or Proposed Regulations to Reduce Demand or
Improve Water Efficiency
None – No new or proposed demand reduction regulations.
City of Chanhassen 2040 Comprehensive Plan311
Local Water Supply Plan
77
\\cfs5\cfs5\shared_data\eng\water supply plan (formerly water emergency conservation plan)\wsp chanhassen1981-5089 111816.docx
Appendix 11: Implementation Checklist – Summary of All the Actions
That a Community is Doing, or Proposes To Do, Including Estimated
Implementation Dates
Chanhassen will continue strident efforts in water accountability and conservation. In 2014 the
City upgraded all meter radios to “smart” meter technology which is a fixed based system. This
system allows the City to notify consumers if a possible leak is detected. The City is in the
process of replacing older domestic meters. The City has also installed several new well mag
meters. The City annually inspects sections of town for leaks which has proven effective.
Conservation and public education also continues to be fostered by WaterWise rebate
programs and in unique ways like irrigation audits and expanded water re-use in new
construction. The City has partnered with the watershed district on installing a water reuse
irrigation system at Chanhassen High School which will be constructed in 20017. The City
planning to install a water reuse system for the Lake Susan baseball field in 2018. The City is
also looking at water reuse system for the downtown which would be installed with a street
reconstruction project in 2012. Chanhassen will move forward using all available methods and
best practices toward water sustainability into the future.
City of Chanhassen 2040 Comprehensive Plan312