All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
VO UU Buddhist Meditation Association Santa Clara County |
33 | 0 | 0 | |
|
Whitethorn Elementary School Humboldt County |
33 | 2 | 1 | |
|
Alpine Mutual Water Company Inyo County |
32 | 0 | 0 | |
|
Andis Wines Amador County |
32 | 0 | 0 | |
|
Aptos Hills Mutual Water CO Santa Cruz County |
32 | 1 | 0 | |
|
Awa Tiger Creek Powerhouse Amador County |
32 | 0 | 0 | |
|
Burney Mountain Guest Ranch Shasta County |
32 | 0 | 0 | |
|
Clear Creek Market Shasta County |
32 | 1 | 1 | |
|
Colonia Santa Maria Contra Costa County |
32 | 2 | 2 | |
|
Cypress Canyon Water System Kern County |
32 | 2 | 1 | |
|
East Austin Creek Mutual Water Company Sonoma County |
32 | 0 | 0 | |
|
Elkhorn Regional Park Yolo County |
32 | 0 | 0 | |
|
Foothill Mutual Water Company Santa Clara County |
32 | 3 | 2 | |
|
Frccsd Old Mill Ranch Plumas County |
32 | 1 | 1 | |
|
Glen Ivy Hot Springs Riverside County |
32 | 1 | 1 | |
|
Haykingdom, Inc. Imperial · Imperial County |
32 | 2 | 1 | |
|
Holiday Harbor INC Shasta County |
32 | 0 | 0 | |
|
Horizon Lane Water Supply San Luis Obispo County |
32 | 0 | 0 | |
|
J&j Grizzly Resort Plumas County |
32 | 0 | 0 | |
|
Joseph Cellars Winery Napa County |
32 | 0 | 0 | |
|
Kern River's Edge Campground Retreat Kern County |
32 | 0 | 0 | |
|
Lassen Co. Off. of Education Lassen County |
32 | 0 | 0 | |
|
Lodi Usd-Turner Academy San Joaquin County |
32 | 0 | 0 | |
|
Meadows of the Kern Mutual Water Company Kern County |
32 | 0 | 0 | |
|
Middle Fork Mobile Home Park Plumas County |
32 | 0 | 0 | |
|
Monterey Dunes Mwa Monterey County |
32 | 1 | 1 | |
|
Nelson Industrial Park Nevada County |
32 | 0 | 0 | |
|
Nord Road Water Association Kern County |
32 | 0 | 0 | |
|
Oak Bottom CG & WC Siskiyou County |
32 | 0 | 0 | |
|
Orchard LN WS #02 Monterey County |
32 | 0 | 0 | |
|
Prairie City Svra Rancho Cordova · Sacramento County |
32 | 0 | 0 | |
|
Prince Truck Stop Water System Kern County |
32 | 0 | 0 | |
|
Quady Residence and Wnery Madera County |
32 | 1 | 0 | |
|
River Ranch RV Park Plumas County |
32 | 0 | 0 | |
|
Rivers End Marina Alameda County |
32 | 0 | 0 | |
|
San Gregorio Company San Mateo County |
32 | 1 | 0 | |
|
Shasta Lake Motel Shasta County |
32 | 0 | 0 | |
|
Shastina Mobile Estates Siskiyou County |
32 | 1 | 1 | |
|
Shay Creek HOA Alpine County |
32 | 0 | 0 | |
|
Sierra Endangered Cat Haven Fresno County |
32 | 0 | 0 | |
|
South Kern Mutual Water Company Kern County |
32 | 4 | 1 | |
|
Stafford Meat Company Sacramento County |
32 | 0 | 0 | |
|
Sunnyslope Campgrounds Fresno County |
32 | 1 | 0 | |
|
Turlock Sportsman's Club Stanislaus County |
32 | 0 | 0 | |
|
Tut Brothers Farm #96 Kern County |
32 | 0 | 0 | |
|
Warner Springs Ranch Resort LLC San Diego County |
32 | 2 | 1 | |
|
Whispering Pines Apartments Mariposa County |
32 | 0 | 0 | |
|
Amador Flower Farm Amador County |
31 | 0 | 0 | |
|
Anza Borrego SP Vallecito San Diego County |
31 | 0 | 0 | |
|
Blue Lakes Mobile Home Park Lake County |
31 | 1 | 1 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.