All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rmrc-Headquarters Campground Tulare County |
88 | 0 | 0 | |
|
Aerial Acres Water Company, Inc. Kern County |
87 | 2 | 1 | |
|
Amador Harvest Inn Amador County |
87 | 0 | 0 | |
|
Big B's Travel Center #2 Tulare County |
87 | 0 | 0 | |
|
East Inyokern Mutual Water Kern County |
87 | 0 | 0 | |
|
Hans Fahden Vineyards Sonoma County |
87 | 1 | 0 | |
|
Hunter Valley Csd Del Norte County |
87 | 2 | 1 | |
|
Rancho Corralitos Santa Cruz County |
87 | 0 | 0 | |
|
River Breeze Mobile Home Park Shasta County |
87 | 0 | 0 | |
|
Riverbend Mobile Home & RV Park Fresno County |
87 | 1 | 0 | |
|
Russian River Mutual Water Co. Sonoma County |
87 | 0 | 0 | |
|
Tri Counties Club San Luis Obispo County |
87 | 2 | 0 | |
|
Basalite Tracy San Joaquin County |
86 | 0 | 0 | |
|
Camp Denver Fox San Diego County |
86 | 1 | 1 | |
|
H & J Water Company San Diego County |
86 | 1 | 0 | |
|
Iverson & Jacks Apts WS Monterey County |
86 | 0 | 0 | |
|
Lee's Market Fresno County |
86 | 1 | 0 | |
|
Mojave Solar Project Alpha Power Plant San Bernardin0 · San Bernardino County |
86 | 0 | 0 | |
|
Mojave Solar Project Beta Power Plant San Bernardin0 · San Bernardino County |
86 | 0 | 0 | |
|
Noel Heights-Cal Water Service (puc) Sonoma County |
86 | 0 | 0 | |
|
Pena's Disposal Services Tulare County |
86 | 0 | 0 | |
|
Tips Roadside Sonoma County |
86 | 0 | 0 | |
|
Wheeler Crest Csd Mono County |
86 | 0 | 0 | |
|
Wolf Mountain Conf. Assn. Nevada County |
86 | 0 | 0 | |
|
Afuera de Chorro Water Company San Luis Obispo County |
85 | 1 | 0 | |
|
Baldacci Family Vineyards Napa · Napa County |
85 | 0 | 0 | |
|
Bassi Ranch Mutual Water Co. San Luis Obispo County |
85 | 2 | 1 | |
|
Cannery Landing Sacramento County |
85 | 1 | 0 | |
|
Cozad Water System San Joaquin County |
85 | 0 | 0 | |
|
Csp-Pfeiffer Big Sur Monterey County |
85 | 1 | 0 | |
|
Delta Shores Resort Sacramento County |
85 | 2 | 2 | |
|
Driscoll Strawberry WS Monterey County |
85 | 0 | 0 | |
|
Fernbridge Cafe Humboldt County |
85 | 0 | 0 | |
|
Hitchin Lucerne INC San Bernardino County |
85 | 0 | 0 | |
|
I-5 and Panoche Development Fresno County |
85 | 0 | 0 | |
|
Idyllwild Pines Camp Riverside County |
85 | 0 | 0 | |
|
Jeff Runquist Winery Amador County |
85 | 0 | 0 | |
|
Kern Ridge Growers Kern County |
85 | 1 | 1 | |
|
Lassen View Water District Tehama County |
85 | 2 | 1 | |
|
Mill Creek M.w.c. Humboldt County |
85 | 2 | 1 | |
|
Mjusd Dobbins School Yuba County |
85 | 3 | 2 | |
|
Modern Village Mwc Tehama County |
85 | 2 | 1 | |
|
Mono Hot Springs Resort Fresno County |
85 | 0 | 0 | |
|
Mulberry Union School Imperial County |
85 | 2 | 0 | |
|
One Hope Winery Napa · Napa County |
85 | 0 | 0 | |
|
Orleans Mutual Water Company Humboldt County |
85 | 2 | 2 | |
|
Resource Center Santa Barbara · Santa Barbara County |
85 | 2 | 0 | |
|
South Feather W&p Sly Creek Campground Butte County |
85 | 0 | 0 | |
|
South Yuba Campground Nevada County |
85 | 1 | 0 | |
|
Stoco Mutual Water Company Kern County |
85 | 2 | 2 |
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.