All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Country Leisure Mobile Estates Glenn County |
40 | 0 | 0 | |
|
Countryside Drive-In Sacramento County |
40 | 1 | 0 | |
|
Cove Island Resort Fresno County |
40 | 1 | 0 | |
|
Covington Mill Mwc-Division B Trinity County |
40 | 1 | 1 | |
|
Crain Park Water System Butte County |
40 | 0 | 0 | |
|
Cypress Center WS Monterey County |
40 | 0 | 0 | |
|
Darioush Winery Napa County |
40 | 1 | 1 | |
|
Dark Canyon Campground Usfs Riverside County |
40 | 1 | 0 | |
|
Deep Springs College Inyo County |
40 | 1 | 1 | |
|
Dlj Properties, LLC San Joaquin County |
40 | 0 | 0 | |
|
Dutcher Crossing Winery Sonoma County |
40 | 0 | 0 | |
|
Dynatect Ro-Lab, Inc. San Joaquin County |
40 | 1 | 1 | |
|
East Three Rivers Mutual Water Corp Tulare County |
40 | 3 | 2 | |
|
Echo Road Group Water Assoc El Dorado County |
40 | 0 | 0 | |
|
Edgewater Mobile Home Park Sacramento County |
40 | 0 | 0 | |
|
EL Rancho Tajiguas Santa Barbara County |
40 | 0 | 0 | |
|
Elks Lodge #322 San Luis Obispo County |
40 | 3 | 1 | |
|
Emerald Valley-Zabala WS Monterey County |
40 | 1 | 1 | |
|
Farmers Market Madera County |
40 | 0 | 0 | |
|
Four Winds Water System Kern County |
40 | 0 | 0 | |
|
Gamble Family Vineyards Winery Napa County |
40 | 0 | 0 | |
|
Granite Construction Company Riverside County |
40 | 1 | 0 | |
|
Granite Construction Water System Kern County |
40 | 0 | 0 | |
|
Gurdjieff Foundation Sonoma County |
40 | 0 | 0 | |
|
Harrison RD WS #01 Monterey County |
40 | 1 | 1 | |
|
Hasson O S Kern County |
40 | 0 | 0 | |
|
Hudson Vineyards Winery Water System Napa County |
40 | 0 | 0 | |
|
Imperial Lakes Inc. Imperial County |
40 | 2 | 0 | |
|
Investors of King Island Water Sys San Joaquin County |
40 | 1 | 0 | |
|
Ione Band of Miwok Indians Amador County |
40 | 1 | 0 | |
|
J R Simplot Company Fresno County |
40 | 1 | 0 | |
|
Jande Country Market Yuba County |
40 | 0 | 0 | |
|
Johnstonville Water System Lassen County |
40 | 1 | 1 | |
|
Junction Elementary School Siskiyou County |
40 | 0 | 0 | |
|
Kilner Park Placer County |
40 | 0 | 0 | |
|
Knapheide Truck Equipment Company San Joaquin County |
40 | 0 | 0 | |
|
Kneeland School Humboldt County |
40 | 2 | 0 | |
|
Korths Pirates Lair Sacramento County |
40 | 0 | 0 | |
|
LA Torres Park San Joaquin County |
40 | 1 | 1 | |
|
Lakehead Subd Mutual Water CO Shasta County |
40 | 1 | 1 | |
|
Lakewood Memorial Park & Funeral Home Stanislaus County |
40 | 1 | 1 | |
|
Linden Usd-Chartville School San Joaquin County |
40 | 0 | 0 | |
|
Lnf-Eagle Lake Ranger Station Lassen County |
40 | 2 | 1 | |
|
Marion Mtn/ Fern Basin Usfs Riverside County |
40 | 0 | 0 | |
|
Mauritson Family Winery Sonoma County |
40 | 0 | 0 | |
|
Mayacamas Warehouse, LLC Sonoma County |
40 | 1 | 1 | |
|
Mom's Apple Pie Sonoma County |
40 | 0 | 0 | |
|
Mountain Springs Mutual Water Company Santa Clara County |
40 | 0 | 0 | |
|
Nickel & Nickel Winery Napa County |
40 | 0 | 0 | |
|
Open Sky Ranch Fresno County |
40 | 1 | 1 |
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.