All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Golden Heights Mutual Water Company Santa Clara County |
66 | 0 | 0 | |
|
Holland Hulling Company Fresno County |
66 | 2 | 0 | |
|
Jasmine Vineyards Delano · Kern County |
66 | 0 | 0 | |
|
Keeler Community Service District Inyo County |
66 | 2 | 1 | |
|
King Fresh Packing & Cooling Tulare County |
66 | 1 | 0 | |
|
Ladwp Keeler Yard Inyo County |
66 | 0 | 0 | |
|
Mondavi Farm Worker Center Napa County |
66 | 0 | 0 | |
|
Moraga Heights Mutual Water Contra Costa County |
66 | 0 | 0 | |
|
Murphy Hill WS #02 Monterey County |
66 | 1 | 1 | |
|
Naples Santa Barbara County |
66 | 0 | 0 | |
|
Oak Knoll Village San Diego County |
66 | 1 | 0 | |
|
Rancho Pino Verde San Bernardino County |
66 | 1 | 1 | |
|
Rau Dairy Fresno County |
66 | 0 | 0 | |
|
River Ranch Farm Worker Center Napa County |
66 | 0 | 0 | |
|
Robin Way Water System Sonoma County |
66 | 0 | 0 | |
|
Rolling Hills Mutual Water Company Santa Barbara County |
66 | 1 | 1 | |
|
Santa Rita Water Santa Barbara County |
66 | 1 | 1 | |
|
Six Acres Water Company Sonoma County |
66 | 2 | 1 | |
|
Stonepine Resort WS Monterey County |
66 | 0 | 0 | |
|
Ventana Big Sur Inn WS Monterey County |
66 | 0 | 0 | |
|
Vierra Knolls Mwc Monterey County |
66 | 1 | 1 | |
|
Villa Tahoe Condominiums El Dorado County |
66 | 1 | 0 | |
|
Wilson Road Water Community Kern County |
66 | 2 | 2 | |
|
4n Mobilehome Park Stanislaus County |
65 | 0 | 0 | |
|
Azalea Glen Humboldt County |
65 | 0 | 0 | |
|
Berry Creek School Butte County |
65 | 0 | 0 | |
|
Bethany Temple Water System San Joaquin County |
65 | 0 | 0 | |
|
Bianchi Flowers INC San Mateo County |
65 | 1 | 0 | |
|
Big Creek Lumber Company Santa Cruz County |
65 | 0 | 0 | |
|
Blue Lakes Village Lake County |
65 | 0 | 0 | |
|
Brookside MHP San Bernardino County |
65 | 7 | 3 | |
|
Burchell Road Water Association Santa Clara County |
65 | 0 | 0 | |
|
Butte Court Mobile Home Park Del Norte County |
65 | 2 | 1 | |
|
Cal Fire Sonoma-Lake-Napa Unit HQ Napa County |
65 | 0 | 0 | |
|
Cal Fire-Deadwood Conservation Camp Siskiyou County |
65 | 1 | 1 | |
|
Camp Cedar Glen San Diego County |
65 | 1 | 0 | |
|
Cdf Pilot Rock Conservation Camp San Bernardino County |
65 | 1 | 0 | |
|
Cold Water Canyon Mwc Mono County |
65 | 0 | 0 | |
|
Community Mutual Water CO Ventura County |
65 | 1 | 0 | |
|
Delta Conservation Camp Solano County |
65 | 0 | 0 | |
|
Delta Trading Water System Kern County |
65 | 0 | 0 | |
|
Dripping Springs Cg Usfs Riverside County |
65 | 0 | 0 | |
|
Enza Zaden Research San Benito County |
65 | 2 | 0 | |
|
Evergreen Mobile Estates Sonoma County |
65 | 0 | 0 | |
|
Foothill Lions Club Yuba County |
65 | 0 | 0 | |
|
Full Belly Farm Woodland · Yolo County |
65 | 1 | 0 | |
|
Garlen Court WS Monterey County |
65 | 1 | 1 | |
|
Groth Vineyards & Winery Napa County |
65 | 0 | 0 | |
|
Harris Woolf Almonds-Ballico Merced County |
65 | 1 | 0 | |
|
Henry W Coe State Park Dowdy Ranch Santa Clara County |
65 | 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.