All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wini Mutual Water Company Kern County |
29 | 1 | 0 | |
|
Berry Creek Community Service Dist Butte County |
28 | 1 | 0 | |
|
Bryant Creek/fir Tracts Mwa El Dorado County |
28 | 1 | 0 | |
|
Camp la Verne San Bernardino County |
28 | 2 | 0 | |
|
Camp Stevens San Diego County |
28 | 1 | 1 | |
|
Cedar Lodge Mariposa County |
28 | 1 | 0 | |
|
Cedar Slope Mutual Water Company Tulare County |
28 | 0 | 0 | |
|
Center of the World Imperial County |
28 | 1 | 0 | |
|
Chevron Lindsay Lindsay · Tulare County |
28 | 0 | 0 | |
|
Christian Service Center of Senator Wash Imperial County |
28 | 0 | 0 | |
|
Church of Glad Tidings Sutter County |
28 | 2 | 0 | |
|
Csp-Nature Center Santa Cruz County |
28 | 0 | 0 | |
|
Curotto Enterprises 2 LLC Sonoma County |
28 | 0 | 0 | |
|
Dodge Ridge Ski Resort Tuolumne County |
28 | 1 | 0 | |
|
EL Camino WC INC Monterey County |
28 | 1 | 1 | |
|
Evergreen Motel & MHP Plumas County |
28 | 0 | 0 | |
|
Forest Village LLC Butte County |
28 | 2 | 0 | |
|
Golden Arco Stanislaus County |
28 | 0 | 0 | |
|
Goose Creek Golf Club Riverside County |
28 | 0 | 0 | |
|
Ham's Station Amador County |
28 | 1 | 0 | |
|
Haven of Peace San Joaquin County |
28 | 0 | 0 | |
|
Idle Wild Market San Joaquin County |
28 | 0 | 0 | |
|
Kathryn Hall Winery Napa County |
28 | 0 | 0 | |
|
Kennedy Meadows General Store Tulare County |
28 | 1 | 0 | |
|
Laguna Village RV Park Sacramento County |
28 | 1 | 1 | |
|
Lang Ranch Shopping Center Los Angeles County |
28 | 0 | 0 | |
|
Lockheed Martin Space Systems Santa Cruz County |
28 | 4 | 1 | |
|
Los Angeles, City of Power Plant #2 Saugus · Los Angeles County |
28 | 0 | 0 | |
|
McCourtney Road Transfer Station Grass Valley · Nevada County |
28 | 0 | 0 | |
|
Miner's Leap Winery Yolo County |
28 | 0 | 0 | |
|
North Valley Services Tehama County |
28 | 0 | 0 | |
|
North Wawona Park Mutual (a System) Mariposa County |
28 | 0 | 0 | |
|
Olivares Farms Water System Merced County |
28 | 1 | 0 | |
|
Padmasambhava Peace Institute Sonoma County |
28 | 0 | 0 | |
|
Plasse Homestead Water Association Amador County |
28 | 0 | 0 | |
|
Puente Housing Solutions San Mateo County |
28 | 1 | 1 | |
|
Robert Young Family Limited Partner Sonoma County |
28 | 0 | 0 | |
|
Rock Creek Lake Campground Inyo County |
28 | 0 | 0 | |
|
Rockwood Estates Mutual Water Company Santa Clara County |
28 | 0 | 0 | |
|
Rollin Wagon Trailer Club Madera County |
28 | 1 | 0 | |
|
Rosehart Industrial Park WS Monterey County |
28 | 0 | 0 | |
|
Santa Cruz Mountain Pure WC Santa Cruz County |
28 | 1 | 0 | |
|
Somerston Winery Napa County |
28 | 1 | 1 | |
|
The Mercantile Lake County |
28 | 0 | 0 | |
|
The Point at Shaver Lake Fresno · Fresno County |
28 | 0 | 0 | |
|
Thousand Pines Christian San Bernardino County |
28 | 1 | 1 | |
|
Whispering Pines Inn San Benito County |
28 | 1 | 0 | |
|
Wildwood Acres Resort Contra Costa County |
28 | 0 | 0 | |
|
Wm. B. Ide Adobe Tehama County |
28 | 0 | 0 | |
|
YMCA Camp Marston/raintree San Diego County |
28 | 1 | 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.