All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sundance Meadows Riverside County |
73 | 0 | 0 | |
|
The Vine Fresno County |
73 | 2 | 1 | |
|
Thermal Park Riverside County |
73 | 2 | 0 | |
|
Town & Country Water Company Kern County |
73 | 0 | 0 | |
|
US Horticulture LLC Madera County |
73 | 0 | 0 | |
|
White Chief Mountain Lodge Mariposa County |
73 | 0 | 0 | |
|
Woolls Ranch Winery Napa County |
73 | 0 | 0 | |
|
All Saints Retreat and Formation Center San Diego County |
72 | 2 | 1 | |
|
Bert's Diner Sacramento County |
72 | 1 | 0 | |
|
Fairmead Landfill Madera County |
72 | 0 | 0 | |
|
Foster RD WS #02 Monterey County |
72 | 0 | 0 | |
|
Julian Oaks Camp San Diego County |
72 | 0 | 0 | |
|
Montano Ranch County |
72 | 1 | 0 | |
|
Tico Mutual Water CO Ventura County |
72 | 0 | 0 | |
|
Upper Little Bear Mountain Club San Bernardino County |
72 | 1 | 1 | |
|
Vino Farms, Inc. Preston Ranch Sonoma County |
72 | 0 | 0 | |
|
Andy's Produce Market, Inc. Sonoma County |
71 | 1 | 1 | |
|
Bella Piazza Winery Amador County |
71 | 0 | 0 | |
|
Family Tree Farms-Traver Tulare County |
71 | 0 | 0 | |
|
Growers Company INC WS Monterey County |
71 | 0 | 0 | |
|
Sun Oaks Racquet Club Shasta County |
71 | 1 | 1 | |
|
Tahoe Sands Inn El Dorado County |
71 | 2 | 0 | |
|
The Village Mobile Home Park Los Angeles County |
71 | 2 | 1 | |
|
Alvarez Brothers WS Monterey County |
70 | 0 | 0 | |
|
Arroyo Seco Estates Mws Monterey County |
70 | 2 | 1 | |
|
Arviso Mobile Home Park County |
70 | 4 | 2 | |
|
Baycliff Water Lake County |
70 | 0 | 0 | |
|
Brush and Old Well Mutual Water Company Santa Clara County |
70 | 1 | 1 | |
|
Callahan Water District Siskiyou County |
70 | 1 | 1 | |
|
Camp Fleming Campground El Dorado County |
70 | 0 | 0 | |
|
Camp Royaneh Sonoma County |
70 | 0 | 0 | |
|
Cathedral Water Association El Dorado County |
70 | 0 | 0 | |
|
Cebro Frozen Foods (eh) Stanislaus County |
70 | 0 | 0 | |
|
Central Bay High School WS Monterey County |
70 | 0 | 0 | |
|
Creekside Mobilehome Park Shasta County |
70 | 2 | 2 | |
|
Crescent Beach Motel Del Norte County |
70 | 1 | 0 | |
|
Deer Meadow Mutual Water Company Tulare County |
70 | 1 | 1 | |
|
Desert Sage Youth Wellness Center Hemet · Riverside County |
70 | 0 | 0 | |
|
Easterly Wwtp Vacaville Vacaville · Solano County |
70 | 0 | 0 | |
|
Estancia Winery WS Monterey County |
70 | 0 | 0 | |
|
Glenn Golf & Country Club Glenn County |
70 | 0 | 0 | |
|
Gloria Ferrer Caves Sonoma County |
70 | 0 | 0 | |
|
Golden State Vintners WS Monterey County |
70 | 0 | 0 | |
|
Golden Valley Municipal Water District Los Angeles County |
70 | 1 | 1 | |
|
Grace Community Christian Church Stanislaus County |
70 | 0 | 0 | |
|
Gsa Tecate Port of Entry San Diego County |
70 | 1 | 0 | |
|
H C Muddox CO Sacramento County |
70 | 0 | 0 | |
|
H2o, INC San Luis Obispo County |
70 | 1 | 0 | |
|
Hidden Harbor Marina & Rvp Tehama County |
70 | 2 | 2 | |
|
Korean Presbyterian Church San Joaquin County |
70 | 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.