All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Windmill Cove Resort/marina LLC San Joaquin County |
50 | 0 | 0 | |
|
Woodfords Station Alpine County |
50 | 0 | 0 | |
|
Zapien Market San Joaquin County |
50 | 1 | 0 | |
|
Bacigalupi Vineyards Sonoma County |
49 | 0 | 0 | |
|
Calexico Lodge San Diego County |
49 | 0 | 0 | |
|
Chappellet Winery Napa County |
49 | 0 | 0 | |
|
Coachella Valley Public Cemetery Riverside County |
49 | 1 | 0 | |
|
Goathouse Brewing Agua Placer County |
49 | 2 | 0 | |
|
Golden Haven Motel Napa County |
49 | 0 | 0 | |
|
Martins Beach Water System San Mateo County |
49 | 1 | 0 | |
|
Materra Winery Napa County |
49 | 0 | 0 | |
|
Napa Valley Reserve Water System Napa County |
49 | 1 | 0 | |
|
Paradise Cove Lodge Kern County |
49 | 0 | 0 | |
|
Reverie Winery Napa County |
49 | 0 | 0 | |
|
River RD WS #26 Monterey County |
49 | 0 | 0 | |
|
Biale Winery Napa · Napa County |
48 | 0 | 0 | |
|
Cuyama Mutual Water Company Santa Barbara County |
48 | 0 | 0 | |
|
Lake Wainani Owners Assoc San Bernardino County |
48 | 0 | 0 | |
|
Mendocino Art Center Mendocino County |
48 | 0 | 0 | |
|
Mendocino Coast Lodge Mendocino County |
48 | 0 | 0 | |
|
Midway RV Park Solano County |
48 | 0 | 0 | |
|
Pine Glade Association Mono County |
48 | 0 | 0 | |
|
Point Horizon Institute Lassen County |
48 | 0 | 0 | |
|
Robert Keenan Winery Napa County |
48 | 0 | 0 | |
|
Thousand Trails Idyllwild MHC Riverside County |
48 | 0 | 0 | |
|
Wildwood Campground Mendocino County |
48 | 0 | 0 | |
|
Anderson Valley Brewing Company Mendocino County |
47 | 1 | 0 | |
|
Back Country Inn San Diego County |
47 | 1 | 0 | |
|
Desert View RV Resort San Bernardino County |
47 | 0 | 0 | |
|
Ebrpd Old Briones Regional Park Contra Costa County |
47 | 0 | 0 | |
|
Indian Wells Lodge Kern County |
47 | 1 | 0 | |
|
Peake Ranch Santa Barbara County |
47 | 0 | 0 | |
|
Slide Ranch Marin County |
47 | 0 | 0 | |
|
The Jeffrey Hotel El Dorado County |
47 | 1 | 0 | |
|
Virginia Creek Settlement Mono County |
47 | 0 | 0 | |
|
Crowley Lake Fish Camp Mono County |
46 | 0 | 0 | |
|
Foxen Vineyard Inc. Santa Barbara County |
46 | 0 | 0 | |
|
Giumarra Bros Fruit CO Tulare County |
46 | 0 | 0 | |
|
Lancaster Estate Winery Sonoma County |
46 | 0 | 0 | |
|
Los Altos Rod and Gun Club Santa Cruz County |
46 | 0 | 0 | |
|
Orland Livestock Comm. Yard, Inc. Glenn County |
46 | 0 | 0 | |
|
Rancho Corta Madera San Diego County |
46 | 0 | 0 | |
|
Silt Wine Company Yolo County |
46 | 0 | 0 | |
|
Tahoe Valley Lodge El Dorado County |
46 | 1 | 0 | |
|
Twin Lakes Store Mono County |
46 | 0 | 0 | |
|
Vincent Vineyards Santa Barbara County |
46 | 0 | 0 | |
|
Bella Vineyards and Wine Caves Sonoma County |
45 | 0 | 0 | |
|
Bethel Harbor Contra Costa County |
45 | 0 | 0 | |
|
Black Stallion Winery Napa County |
45 | 0 | 0 | |
|
Bsa/camp Oljato Fresno County |
45 | 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.