DDW-2025-004821

System Number 20006
1.1 Indoor Water Use
Number of residential connections - - - - - - - - - - -- - - - - - - - - - - - - - - - - - -- - - - - - - - 274
Number of other connections - - - 1 ERCs of other connections 0.5
Total Equivalent Residential Connections (ERCs)274.5
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
800 152.5 400 109,800
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
Average irrigated acreage per residential connection - - - - - - - - - - - - > > >0.10 1
Total irrigated acreage of other connections (park, school, etc.)- - - - - - - - - - - - > > >5.00 2
Irrigation zone 3 3
4
5
6
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
488 17.0 253 12,640
1.3 Fire Flow Water Use
Does the water system provide fire protection?
Maximum fire flow demand (in gpm) for water system or pressure zone 1,000
Maximum fire suppression duration (in hours) for water system or pressure zone 1
Required Fire Suppression Storage (in gallons) - - - - - - - - - - - - - - - - - - - - > > >60,000
2. Summary of Water System Capacity Requirements
gpd/ERC Total (gpm)Gallons/ERC Total (gallons)
1,288 169.5 653 182,440
2.1 Does this system have adequate source capacity (per R309-510-7)?
Required Source Capacity 169.5 gpm
Existing Source Capacity 400.0 gpm
Source Capacity Deficit None gpm
Existing % of Total Req'd 236.1%
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*
(Example: water use of 2 factories
equals to water use of 55 homes.)
Source
MIN. REQUIREMENTS FOR IRRIGATION USE
System Name
Source
Mayfield 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)
Storage
Storage (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.
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 per residential lot here.
Enter total irrigated acres of other connections here.
Enter fire flow in gpm.
Enter duration in hours.
Autolink to 4.2 "Total Existing Source Capacity" cell below.
Select Irrigated Zone # from the pick list. See "Irrigation Demands & Map" tab on the bottom of the screen or WaterLink.
Less than 100% indicates: (1) additional source capacity is needed, and (2) source deficiency should be assessed.
Autolink to 2 "Total Source" cell above.
Source deficit indicates that: (1) additional source capacity is needed, and (2) source deficiency should be assessed.
Mayfield Capacity 2025 Page 1 of 2 5/27/2025
2.2 Does this system have adequate storage capacity (per R309-510-8)?
Total Required Storage 182,440 gal
Existing Storage Capacity 650,000 gal
Storage Capacity Deficit None gal
Required Fire Storage 60,000 gal
Not
Applicable
Existing % of Total Req'd 356.3%
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 Gallon/site
or pad 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)400
4.1 Projected ERCs Calculation (optional)WS001 Upper 12 Mile Spring 50
Total Projected ERCs 0 WS002 Lower Spring 50
Existing Residential Connections 0 WS003 Mayfield Town Well 120
Obligated Future ERCs (enter below)0 WS004 Olsen Canyon Spring 40
WS005 Order Canyon Spring 20
WS006 Mayfield Park Well 120
WS007 Centerfield Consecutive Connection
Maximum ERCs (assuming indoor use only)720
4.3 Summary - Existing Storage Tanks (enter below)
Total Existing Storage Cap. (in gallons)650,000
ST002 Booster Pump Tank 50,000
ST003 West Tank 100,000
ST004 East Tank 150,000
ST005 Olsen Order Tank 350,000
(Enter notes here. If additional space is needed, click the "Additional
Notes" tab on the bottom of the screen.)
RV Park
Facility Type
Source
MINIMUM REQUIREMENTS FOR INDOOR USE
Modern Recreation Camp
Storage
Semi-Developed Camp w/ flush toilets
Mayfield Town
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 due
to fire storage?
Autolink to 4.3 "Total Existing Storage Capcity" cell below.
If applicable, enter number of people per camp site here.
Storage deficit indicates that: (1) additional storage volume is needed, and (2) storage deficiency should be assessed.
Use this number in Cell I8 ("Number of residential connections") on Page 1 to calculate PROJECTED demand & req'ts (including both existing & future connections).
Diaphragm or air 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.
If applicable, use this 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 (2) storage deficiency should be assessed.
Mayfield Capacity 2025 Page 2 of 2 5/27/2025