DDW-2025-001827

Utah Department of Environmental Quality
Division of Drinking Water
Minimum Sizing Standards
Date Standard Effective: Thu Feb 20 12:58:35 MST 2025
Peak Day Source Demand per ERC (gal/day): 890
Average Annual Demand per ERC (gal/day): 96,247
Equalization Storage per ERC (gal/day): 264
SANTAQUIN CITY PWS ID: UTAH25002
Admin Name: DENNIS G BARNES
Address: 275 W Main ST
City, State, Zip: Santaquin, UT 84655
Phone: [phone]
Email: [e-mail]
System Type: Community
Population: 16,500
MINIMUM SIZING STANDARD
MINIMUM SIZING STANDARD CALCULATIONS VARIABILITY
Data from these reporting years: 2021, 2022, 2023
Peak Day Source Demand per ERC (gal/day): 890
Average Annual Demand per ERC (gal/year): 96,247
Equalization Storage per ERC (gal): 264
x
x
x
(1 + 0.0)
(1 + 0.0)
(1 + 0.0)
=
=
=
890
96,247
264
DWRi WATER USE DATA REPORTED
Equalization per ERC (gal): 264
Existing Storage (gal): 3,700,000
ERCs: 5,999
Required Storage w/o Fire Flow: 1,583,736
Required Fire Storage (gal): 360,000
Required Storage w/Fire (gal): 1,943,736
Storage Deficiency: 0
Storage Deficiency (%): 0.0
No Storage Deficiency
Peak Day Source Demand per ERC (gpm): 0.62
Existing Source Capacity (gpm): 7,023
ERCs: 5,999
Required Source Capacity (gpm): 3,719
Source Deficiency: 0
Source Deficiency (%): 0.0
No Source Deficiency
Year Peak
Day
Source
Demand
(gal/day)
Average
Annual
Demand
(gallons)
ERCs Peak
Demand
per ERC
(gal/day)
Avg
Annual
Demand
per ERC
(gal/day)
Equaliza
tion
Storage
per ERC
(gal/day)
OP
Days
2023 5,181,030 668,685,354.12 5,999 864 87,356 239 365
2022 5,298,337 806,624,599.44 5,950 890 96,247 264 365
2021 4,555,396 686,190,069.84 5,362 850 85,730 235 365
Variability:0.119 0.0 0.0 0.0
Year Peak Month Average
(gal/day)
Peak Month Average
per ERD (gal/day)
Ratio of PD/ERC to
Peak Month Avg/ERC
2023 1,704,410 284 3.04
2022 1,826,342 307 2.9
2021 1,293,102 241 3.52
CAPACITY CALCULATIONS FOR STORAGE
CAPACITY CALCULATIONS FOR SOURCES
SYSTEM STORAGE AND SOURCE INVENTORY
Storage ID Storage Name Effective Volume (GAL)
ST001 UPPER CANYON TANK ST001 1,000,000
ST002 LOWER CANYON TANK ST002 500,000
ST003 EAST SIDE TANK ST003 1,000,000
ST004 SUMMIT RIDGE TANK ST004 1,200,000
Storage Totals: 3,700,000 GAL
Source ID Source Name Flow Rate (GPM)
WS002 CENTER ST WELL 600
WS003 CEMETERY WELL 988
WS005 SOUTH WELL
WS006 SUMMIT RIDGE WELL 4,570
WS001 SANTAQUIN SPRING 865.9
Source Totals: 7,023 GPM