Tapcensus

Water quality in Patterson, California

Patterson 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

Patterson, City of CA5010017 · Community water system · Ground water · Patterson
Serves 24,977 people Rules violated, past 3 years 0 Last sanitary survey Feb 24, 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 5.4 mi
Westley Csd
 70 1 5.6 mi
Buehner Water System
 150 0 6.1 mi
City of Modesto Grayson
Modesto		 917 0 6.3 mi
Crows Landing Comm Svc District
 500 2 7.2 mi
Western Hills Water District/diablo Gran
 2,000 0 7.6 mi
Monterey Park Tract Csd
 186 1 8.6 mi
Country Western Mhrv
 55 1 9.6 mi
Buehner Houses
 25 0 11.1 mi
Riverdale Park Tract Csd
 610 1 11.3 mi
Martin's Mobile Home Court
 60 2 12.5 mi
Fisherman's Bend MHP
 120 0 12.7 mi
City of Newman-Water Department
Newman		 12,389 1 13.1 mi
Sunrise Village MHP
 339 1 13.5 mi
Ceres, City of
Ceres		 54,513 1 13.7 mi
City of Modesto Walnut Manor
Modesto		 178 0 14.4 mi
Keyes Community Services Dist.
 5,672 0 14.4 mi
Modesto, City of
Modesto		 218,915 0 15.8 mi
Modesto Irrigation District
 0 0 16.1 mi
City of Modesto Salida
Modesto		 14,576 0 16.6 mi
Turlock, City of
Turlock		 72,888 0 16.6 mi
City of Modesto North Turlock
Modesto		 172 0 17.1 mi
City of Modesto Central Turlock
Modesto		 119 0 17.5 mi
Mulberry MHP
 148 1 17.6 mi
City of Modesto South Turlock
Modesto		 1,109 0 17.7 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
Patterson Cemetery District
Patterson 		37 0 0
New Hope Church of the Nazarene
 70 0 0
Jennings Wwtp
 30 1 1
Fink Road Landfill Stanislaus
 31 0 0
Darling Ingredients Turlock
 43 1 1
Joe's Travel Plaza (eh)
 26 0 0
Gawfco Enterprises, Inc.
 26 0 0
Westley Property LLC
 25 0 0
Triangle Truck Stop (water)
 25 1 0
Turlock Sportsman's Club
 32 0 0
Mountain View Elementary School
 170 2 1
Taqueria Rancho Alegre
 26 0 0
Mountain View Chatom Recreation
 25 0 0
Oasis Market
 25 1 0
Farmers' Den /market
 26 1 0
Ceres Unified/westport School
 450 2 0
Shiloh-Paradise Baseball for Youth
 26 1 0
Shiloh School District
 105 1 0
Bronco Winery
 400 0 0
California Transplants LLC
 25 0 0
Joe's Food Mart Water System
 26 0 0
Log Cabin
 26 0 0
Beckley Lyons Water System
 26 0 0
Smart Stop Food Mart (eh)
 26 0 0
Fisher Nut
 25 0 0
The Morning Star Company
 200 0 0
Paradise School
 218 0 0
Rbvon
 50 0 0
Department of Transportation
 1,000 0 0
Hamlet Motel
 26 1 0
Chatom School (eh)
 385 1 1
Cebro Frozen Foods (eh)
 70 0 0
Salida Hulling Association Water System
 25 0 0
Eastin
 26 2 0
Chemurgic Agricultural Chemicals, Inc.
 42 2 2
Frank Raines Park Ohv
 26 0 0
Country Store Water System
 25 0 0
Storer Transportation
 40 1 0
Hart Ransom Union School & District
 650 0 0
Greenlaw Modesto Investors LLC
 142 0 0
Wood Colony Christian School
 90 1 1
At&t Water System
 80 1 1
Ratto Bros, INC
 110 0 0
Grace Community Christian Church
 70 0 0
Keyes 76 (water System)
 25 0 0
4937 Beckwith Water System
 26 0 0
Golden Arco
 28 0 0
Fee Water System
 25 0 0
Brethren Heritage School, INC
 55 2 2
Our Lady of Assumption Church
 1,000 0 0
All non-community systems
About this data

Water systems are matched to Stanislaus County, nearest to Patterson 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.