All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Piute Mountain School Water Kern County |
75 | 0 | 0 | |
|
Pnf Peninsula / Wyandotte Cgs Plumas County |
75 | 0 | 0 | |
|
Potrero General Store San Diego County |
75 | 0 | 0 | |
|
Rancheria Water & Imprmnt Assn Fresno County |
75 | 0 | 0 | |
|
Reds Meadow Resort Madera County |
75 | 0 | 0 | |
|
Ridge Cafe-Water System Nevada County |
75 | 0 | 0 | |
|
San Marcos Christian Camp Santa Barbara County |
75 | 0 | 0 | |
|
Santa Margarita County Preserve San Diego County |
75 | 0 | 0 | |
|
Shasta Marina at Packers Bay Shasta County |
75 | 0 | 0 | |
|
Shasta Market Fresno County |
75 | 0 | 0 | |
|
Sorenson S Resort Alpine County |
75 | 0 | 0 | |
|
South Valley Farms-Beech Huller/office Kern County |
75 | 0 | 0 | |
|
Teleli Golf Club Tuolumne County |
75 | 1 | 0 | |
|
Three Rivers Golf & Spirits, Inc. Tulare County |
75 | 0 | 0 | |
|
Tierra Bonita Mutual Water Los Angeles County |
75 | 1 | 1 | |
|
Tnf-Cottonwood CG Sierra County |
75 | 0 | 0 | |
|
Tnf-Little Truckee WS Sierra County |
75 | 0 | 0 | |
|
Tulare County Road Yard 2/3 Tulare County |
75 | 1 | 0 | |
|
Unitarian Universalist Comm. of the Mtns Nevada County |
75 | 1 | 0 | |
|
Usasa-Pom Enclave Camp Roberts San Luis Obispo County |
75 | 0 | 0 | |
|
Usfs Gregory Creek Camp Shasta County |
75 | 0 | 0 | |
|
Usfs Middle Meadows Campground Placer County |
75 | 0 | 0 | |
|
Vista Hills Mutual Water Company Santa Barbara County |
75 | 2 | 0 | |
|
Waddington W.w. Humboldt County |
75 | 3 | 2 | |
|
Washoe House Sonoma County |
75 | 0 | 0 | |
|
West Point Campground El Dorado County |
75 | 0 | 0 | |
|
Wilson Acres Mutual Water Tehama County |
75 | 1 | 0 | |
|
Woods Lodge Mono County |
75 | 0 | 0 | |
|
Wrights Lake Campground El Dorado County |
75 | 0 | 0 | |
|
Yokayo Tribe of Indians Mendocino County |
75 | 2 | 2 | |
|
Cal West Best LLC Shasta County |
74 | 0 | 0 | |
|
Ebrpd Black Diamond Mines Contra Costa County |
74 | 0 | 0 | |
|
Kings River Market Tulare County |
74 | 0 | 0 | |
|
Pike Ranch Mutual Water CO Madera County |
74 | 4 | 1 | |
|
The Narrows Family Resort Lake County |
74 | 0 | 0 | |
|
Wheel-Er in Family Wheel-er In Family Resort · County |
74 | 3 | 0 | |
|
Bautista CC No. 36 Riverside County |
73 | 3 | 0 | |
|
Carmel Valley Tennis Camp WS Monterey County |
73 | 0 | 0 | |
|
Countryside Estates Mwc Monterey County |
73 | 1 | 1 | |
|
Echo Peak Water Association El Dorado County |
73 | 1 | 0 | |
|
Glenn Ave WS #01 Monterey County |
73 | 1 | 1 | |
|
Kern Mobile Estates LLC Kern County |
73 | 1 | 0 | |
|
Knightsen Community Water System Contra Costa County |
73 | 0 | 0 | |
|
Lazy S Mobile Ranch Lake County |
73 | 1 | 0 | |
|
La Posta Upper County |
73 | 4 | 0 | |
|
Primrose Lane Apartments Inyo County |
73 | 0 | 0 | |
|
Rancho Ybarra Christian Camp Los Angeles County |
73 | 0 | 0 | |
|
Russian River Winery Sonoma County |
73 | 0 | 0 | |
|
South Feather W&p Bangor Butte County |
73 | 0 | 0 | |
|
Sugarloaf Mutual Water Company Tulare County |
73 | 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.