All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Western Railway Museum Solano County |
50 | 0 | 0 | |
|
Wild Goose Duck Club Butte County |
50 | 1 | 0 | |
|
Wildwood Lake County |
50 | 0 | 0 | |
|
Willitts Equipment Company, Inc. Exeter · Tulare County |
50 | 0 | 0 | |
|
Willowbrook Ale House Sonoma County |
50 | 0 | 0 | |
|
Wilsons Camp Prattville Plumas County |
50 | 0 | 0 | |
|
Windmill Cove Resort/marina LLC San Joaquin County |
50 | 0 | 0 | |
|
Woodfords Mutual Water Company Alpine County |
50 | 0 | 0 | |
|
Woodfords Station Alpine County |
50 | 0 | 0 | |
|
Yosemite View Lodge Mariposa 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 | |
|
Caltrans Mountain Pass Jpoe Cvef San Bernardino County |
49 | 3 | 2 | |
|
Chappellet Winery Napa County |
49 | 0 | 0 | |
|
Coachella Valley Public Cemetery Riverside County |
49 | 1 | 0 | |
|
Dutch Slough Water Works Contra Costa County |
49 | 1 | 1 | |
|
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 | |
|
Monterey Mushrooms Maher Crt Monterey County |
49 | 1 | 1 | |
|
Napa Valley Reserve Water System Napa County |
49 | 1 | 0 | |
|
Paradise Cove Lodge Kern County |
49 | 0 | 0 | |
|
Prather Water District Fresno County |
49 | 1 | 1 | |
|
Reverie Winery Napa County |
49 | 0 | 0 | |
|
River RD WS #26 Monterey County |
49 | 0 | 0 | |
|
San Juan RD WS #01 Monterey County |
49 | 0 | 0 | |
|
Vie-Del Company Fresno County |
49 | 1 | 0 | |
|
Baumann RD WS #01 Monterey County |
48 | 0 | 0 | |
|
Biale Winery Napa · Napa County |
48 | 0 | 0 | |
|
Calenergy (administrative) Imperial County |
48 | 0 | 0 | |
|
Cardinale Estate Napa County |
48 | 0 | 0 | |
|
Crystals Santa Rosa · Sonoma County |
48 | 0 | 0 | |
|
Cuyama Mutual Water Company Santa Barbara County |
48 | 0 | 0 | |
|
Eddy Drive Sonoma · Sonoma County |
48 | 0 | 0 | |
|
El Mesquite MHP County |
48 | 0 | 0 | |
|
Faith and Family Farms WS Monterey County |
48 | 2 | 1 | |
|
Fcsa 34b Ventana Hills Fresno County |
48 | 0 | 0 | |
|
Gamez MHP County |
48 | 1 | 0 | |
|
Kinnybrook Mutual Water Company Sonoma County |
48 | 0 | 0 | |
|
Lake Wainani Owners Assoc San Bernardino County |
48 | 0 | 0 | |
|
Learning Services Corp. Santa Clara County |
48 | 0 | 0 | |
|
Maher RD WS #05 Monterey County |
48 | 1 | 1 | |
|
MD 28 Ripperdan Self Help Madera County |
48 | 1 | 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 | |
|
Paradise RD WS #21 Monterey County |
48 | 1 | 1 | |
|
Pine Glade Association Mono County |
48 | 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.