All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
7180 Hwy 116 LLC Sonoma County |
57 | 1 | 0 | |
|
All Hands Ecology Marin County |
57 | 0 | 0 | |
|
Asti Winery Sonoma County |
57 | 0 | 0 | |
|
Bricoleur Vineyards Sonoma County |
57 | 0 | 0 | |
|
Cahuilla Mountain Market & Cafe Riverside County |
57 | 1 | 0 | |
|
Camp Angelus TR Land Assn San Bernardino County |
57 | 0 | 0 | |
|
Camp ST Francis Santa Cruz County |
57 | 0 | 0 | |
|
Ebrpd Morgan Territory Contra Costa County |
57 | 0 | 0 | |
|
Ektimo Vineyards Sonoma County |
57 | 0 | 0 | |
|
Glen Oaks WS #01 Monterey County |
57 | 0 | 0 | |
|
McUsd -Coulterville-Greeley Hill School Mariposa County |
57 | 0 | 0 | |
|
Ranch Road Estates Mutual Water Company Inyo County |
57 | 0 | 0 | |
|
The Painted Turtle Camp Los Angeles County |
57 | 1 | 1 | |
|
The Willows Resort Santa Cruz County |
57 | 2 | 1 | |
|
Thomason Tuolumne Rd. Prop (steve's Plac Tuolumne County |
57 | 2 | 0 | |
|
Toyota San Luis Obispo San Luis Obispo County |
57 | 0 | 0 | |
|
Woodland Heights Mwc Monterey County |
57 | 0 | 0 | |
|
Belk Farms Riverside County |
56 | 2 | 0 | |
|
Blue Skies Mobile Home Park Los Angeles County |
56 | 1 | 1 | |
|
Booker Winery Cayucos · San Luis Obispo County |
56 | 0 | 0 | |
|
Countryside Care Center Fresno County |
56 | 0 | 0 | |
|
Desmond RD WS #03 Monterey County |
56 | 0 | 0 | |
|
Graves School WS Monterey County |
56 | 1 | 1 | |
|
Green Acres WA Monterey County |
56 | 0 | 0 | |
|
Hart Flat Bear Mutual Water Kern County |
56 | 0 | 0 | |
|
Huckleberry Water Development Fresno County |
56 | 0 | 0 | |
|
Ivanpah Solar Thermal Power Plant San Bernardino County |
56 | 0 | 0 | |
|
Jost Post WA Monterey County |
56 | 0 | 0 | |
|
Lahontan Heights Home. Assoc. Lassen County |
56 | 1 | 0 | |
|
Lichau Hylands Mutual Water Company Sonoma County |
56 | 0 | 0 | |
|
Lotus Store Water System Tahoe City · El Dorado County |
56 | 1 | 0 | |
|
Mineral Homeowner's Assn Tehama County |
56 | 0 | 0 | |
|
Outward Bound California Mariposa County |
56 | 1 | 0 | |
|
Paradise RD WS #09 Monterey County |
56 | 1 | 1 | |
|
Pg&e Balch Camp Fresno County |
56 | 0 | 0 | |
|
Phelps Vineyards Napa County |
56 | 0 | 0 | |
|
Raudel Delgado Water System San Joaquin County |
56 | 0 | 0 | |
|
Redwood Terrace Mutual San Mateo County |
56 | 1 | 0 | |
|
Rock Creek Lakes Resort Inyo County |
56 | 1 | 0 | |
|
Seafoam Lodge Mendocino County |
56 | 0 | 0 | |
|
Sid Peabody Solano County |
56 | 0 | 0 | |
|
Tamarack Park Homeowners Assoc El Dorado County |
56 | 0 | 0 | |
|
Tully Mobile Estates Stanislaus County |
56 | 0 | 0 | |
|
Usfs/trimmer Work Center Fresno County |
56 | 1 | 0 | |
|
Vajrayana Foundation Santa Cruz County |
56 | 1 | 0 | |
|
Winterhaven Mobile Estates Los Angeles County |
56 | 2 | 0 | |
|
Brethren Heritage School, INC Stanislaus County |
55 | 2 | 2 | |
|
Buck Ridge Hensley Lake Madera County |
55 | 0 | 0 | |
|
Cachagua Mutual WS (#4) Monterey County |
55 | 1 | 0 | |
|
Cal Fire Mountain Home Cnsrvtn Camp Tulare County |
55 | 0 | 0 |
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.