DDW-2025-009872

System Number 20009
Number of residential connections - - - - - - - - - - -- - - - - - - - - - - - - - - - - - -140
Number of other connections - - - 7 ERCs of other connections 7.0
Total Equivalent Residential Connections (ERCs)147.0
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
800 81.7 400 58,800
1.2 Outdoor Water Use
Is the drinking water used for outdoor irrigation?
Residential ERCs using drinking water for irrigation 0
Percentage of Residential ERCs using DW for irrigation 0%Map Zones
per residential connection - - - - - - - - -0.10 1
other connections (park, school, etc.)- - - - - - - - -0.25 2
Irrigation zone 3 3
4
5
6
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
488 0.8 253 632
1.3 Fire Flow Water Use
Does the water system provide fire protection?
flow demand (in gpm) for water system or pressure zone 1,000
duration (in hours) for water system or pressure zone 2
Required Fire Suppression Storage (in gallons) - - - - - - - - - - - - - - - - -120,000
2. Summary of Water System Capacity Requirements
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
1,288 82.5 653 179,432
2.1 Does this system have adequate source capacity (per R309-510-7)?
Required Source Capacity 82.5 gpm
Existing Source Capacity 319.0 gpm
Source Capacity Deficit None gpm
Existing % of Total Req'd 386.6%
(indoor + outdoor + fire)
This source capacity assessment is a general overall system calculation. It may not reflect the variations in individual areas or pressure zones.
System Name
Source
Sterling Town
Storage
(*Verify req'd fire flow and duration with local fire code officials.* Enter notes
here, e.g. fire official contact info or comments.)
(Enter notes here regarding whether and what %
of irrigation water is supplied by PWS.)
Source (indoor + outdoor)
MIN. REQUIREMENTS FOR INDOOR WATER USE
MINIMUM REQUIREMENTS FOR WATER SYSTEM
Division of Drinking Water — Water System Capacity Calculation Sheet (Last Update 3/30/2017)
*Enter the green cells only*
equals to water use of 55 homes.)
MIN. REQUIREMENTS FOR IRRIGATION USE
Yes No
Yes No
Enter number of non-residential connections, e.g., 2 industrial connections.
Convert "Number of other connections" (Cell E9) to ERCs here. [ERCs of other connections = peak day demand of other connections in gal per day / 800 gpd]
Enter estimated irrigated acre
Enter total irrigated acres of other connections here.
Enter fire flow in gpm.
Enter duration in hours.
from the pick list. See "Irrigation Demands & Map" tab on the bottom of the
Less than 100% indicates: (1) additional source capacity is needed, and
Source deficit indicates that: (1) additional source capacity is needed,
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2.2 Does this system have adequate storage capacity (per R309-510-8)?
Total Required Storage 179,432 gal
Existing Storage Capacity 450,000 gal
Storage Capacity Deficit None gal
Required Fire Storage 120,000 gal
Not
Applicable
Existing % of Total Req'd 250.8%
3. Transient PWS Indoor Water Use — ERC Calcuation (See R309-510, Tables 510-1, 2, & 4 for other facility types.)
GPD/person*GPD/site or pad Gallons/person ERC/site or pad Total # of
sites/pads ERCs
60 0 30 0 0.00 0.0
20 0 10 0 0.00 0.0
5 0 2.5 0 0.00 0.0
N/A 100 N/A 50 0.13 0.0
Number of people per camp site
Source
(GPD/vehicle)
Storage
(Gal./vehicle)
ERC/1000
vehicles served
Vehicles
served/day ERCs
7 3.5 8.8 0.0
4. Data Input for Calculating ERCs, Source and Storage 4.2 Summary - Existing Sources (enter in green cells below)
Total Existing Source Capacity (in gpm)319
4.1 Projected ERCs Calculation (optional)WS001 Cove HoleSpring 85
Total Projected ERCs 0 WS002 Lower Funk Spring 65
Existing Residential Connections 0 WS005 Funk Canyon Well 165
Obligated Future ERCs (enter below)0 WS003 Upper Funk Canyon 4
Maximum ERCs (assuming indoor use only)574.2
4.3 Summary - Existing Storage Tanks (enter below)
Total Existing Storage Cap. (in gallons)450,000
ST001 LowerTank 200,000
ST002 Upper Tank 250,000
Semi-Developed Camp w/ flush toilets
Roadway Rest Stop w/ flushometer valves
Semi-Developed Camp w/o flush toilets
This storage capacity assessment is a general overall system calculation. It may not reflect the variations in individual areas or pressure zones.
Is storage deficiency solely
to fire storage?
(Enter notes here. If additional space is needed, click the "Additional
Notes" tab on the bottom of the screen.)
RV Park
Facility Type
Modern Recreation Camp
Storage
Autolink to 4.3 "Total Existing Storage Capcity" cell below.
Storage deficit indicates that: (1) additional storage volume is needed, and (2) storage deficiency should be assessed.
Cell I8 ("Number of residential connections") on Page 1 to calculate PROJECTED demand & req'ts (including both existing & future connections).
pressure tanks shall NOT be considered effective storage volume for (1) community systems, or (2) NTNC with significant demand UNLESS an exception has been granted.
Autolink to 2 "Total Storage" cell above.
number in cell I8 or cell I9 on Page 1.
If NO, answer one of question set 2.01 to 2.05 in ESS.If YES, answer one of question set 2.06 to 2.10 in ESS.
Less than 100% indicates: (1) additional storage capacity is needed, and
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