Tapcensus

Water quality in Westley, California

Westley is in Stanislaus County. 192 active public water systems serve the county; 68 had an EPA violation in the past three years.

Most likely your provider

Westley Csd CA5000408 · Community water system · Ground water purchased
Serves 70 people Rules violated, past 3 years 1 Unresolved 1 Last sanitary survey Nov 19, 2025 Distance under 0.1 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in Stanislaus County

60 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Hillsview Homes
 887 1 0.3 mi
City of Modesto Grayson
Modesto		 917 0 1.7 mi
Patterson, City of
Patterson		 24,977 0 5.6 mi
Buehner Houses
 25 0 5.6 mi
Country Western Mhrv
 55 1 9.5 mi
Riverdale Park Tract Csd
 610 1 10.0 mi
Western Hills Water District/diablo Gran
 2,000 0 10.3 mi
Monterey Park Tract Csd
 186 1 10.5 mi
Buehner Water System
 150 0 10.7 mi
Sunrise Village MHP
 339 1 12.5 mi
Crows Landing Comm Svc District
 500 2 12.7 mi
City of Modesto Salida
Modesto		 14,576 0 12.9 mi
Ceres, City of
Ceres		 54,513 1 13.8 mi
City of Modesto Walnut Manor
Modesto		 178 0 14.2 mi
Modesto, City of
Modesto		 218,915 0 14.3 mi
Modesto Irrigation District
 0 0 14.5 mi
Tully Mobile Estates
 56 0 15.6 mi
Keyes Community Services Dist.
 5,672 0 15.8 mi
Oasis Investments
 75 1 16.0 mi
Morningside Mobilehome Park
 67 0 16.9 mi
South San Joaquin Irrigation District
 0 0 17.0 mi
City of Modesto del Rio
Modesto		 1,346 0 17.0 mi
Del Rio East HOA Water System
 110 1 17.6 mi
Martin's Mobile Home Court
 60 2 17.8 mi
Fisherman's Bend MHP
 120 0 18.0 mi
All 61 community water systems in Stanislaus County
Non-community systems in Stanislaus County (131: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Joe's Travel Plaza (eh)
 26 0 0
Westley Property LLC
 25 0 0
Gawfco Enterprises, Inc.
 26 0 0
Triangle Truck Stop (water)
 25 1 0
Patterson Cemetery District
Patterson 		37 0 0
Shiloh-Paradise Baseball for Youth
 26 1 0
Shiloh School District
 105 1 0
Rbvon
 50 0 0
Jennings Wwtp
 30 1 1
New Hope Church of the Nazarene
 70 0 0
Department of Transportation
 1,000 0 0
Beckley Lyons Water System
 26 0 0
Fisher Nut
 25 0 0
Smart Stop Food Mart (eh)
 26 0 0
Ceres Unified/westport School
 450 2 0
Paradise School
 218 0 0
Salida Hulling Association Water System
 25 0 0
Ratto Bros, INC
 110 0 0
Wood Colony Christian School
 90 1 1
Hart Ransom Union School & District
 650 0 0
Darling Ingredients Turlock
 43 1 1
Storer Transportation
 40 1 0
4937 Beckwith Water System
 26 0 0
Joe's Food Mart Water System
 26 0 0
Fink Road Landfill Stanislaus
 31 0 0
Mountain View Chatom Recreation
 25 0 0
Taqueria Rancho Alegre
 26 0 0
Mountain View Elementary School
 170 2 1
Farmers' Den /market
 26 1 0
Oasis Market
 25 1 0
Greenlaw Modesto Investors LLC
 142 0 0
Bronco Winery
 400 0 0
At&t Water System
 80 1 1
Brethren Heritage School, INC
 55 2 2
Turlock Sportsman's Club
 32 0 0
Frank Raines Park Ohv
 26 0 0
Log Cabin
 26 0 0
Fee Water System
 25 0 0
Gregori High School
 2,000 0 0
Grover Landscape Water System
 125 2 1
Stanislaus Union School Dist
 390 1 1
Grace Community Christian Church
 70 0 0
Chatom School (eh)
 385 1 1
Libitzky
 120 1 1
Liberty Baptist Church
 45 1 0
Stratos Way Water Company, INC
 135 0 0
5033 Pentecost
 302 0 0
Zansco
Modesto 		25 0 0
Sterling Industrial
 35 1 1
Pentecost Properties Water System
 25 0 0
All non-community systems
About this data

Water systems are matched to Stanislaus County, nearest to Westley first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.