All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Shorelands Road & Water Company Mendocino County |
78 | 0 | 0 | |
|
Sierra Sky Ranch Water System Madera County |
78 | 0 | 0 | |
|
Sonny Bono Salton Sea Wildlife Refuge Imperial County |
78 | 0 | 0 | |
|
Strawberry RD WS #06 Monterey County |
78 | 0 | 0 | |
|
Sugarloaf Cottages Shasta County |
78 | 0 | 0 | |
|
Usfs Sweetwater Campground Tuolumne County |
78 | 1 | 0 | |
|
Bodega Water Company Sonoma County |
77 | 0 | 0 | |
|
Inn at Schoolhouse Creek Mendocino County |
77 | 0 | 0 | |
|
Mountain Center Cafe Riverside County |
77 | 0 | 0 | |
|
Poso Park Assn Tulare County |
77 | 0 | 0 | |
|
Sans End RV Park County |
77 | 5 | 0 | |
|
Westside Storage Water System Sonoma County |
77 | 0 | 0 | |
|
Britz/five Points Fresno County |
76 | 1 | 0 | |
|
Cdpr Four Rivers District-Basalt Merced County |
76 | 0 | 0 | |
|
Crowell King Ridge, LLC Sonoma County |
76 | 0 | 0 | |
|
Eddo's Harbor & R V Park Sacramento County |
76 | 1 | 0 | |
|
EL Rancho Motel San Joaquin County |
76 | 1 | 0 | |
|
Honeydew Country Store Humboldt County |
76 | 0 | 0 | |
|
Madrone Mutual Water Company Sonoma County |
76 | 0 | 0 | |
|
Manteca Industrial Prk Csa-30 San Joaquin County |
76 | 0 | 0 | |
|
Oroville Mobile Home Park Butte County |
76 | 2 | 0 | |
|
Parreira Almond Processing Company, LLC Merced County |
76 | 0 | 0 | |
|
Reesedale Mutual Water Company Los Angeles County |
76 | 1 | 0 | |
|
Stockton Baptist Church San Joaquin County |
76 | 0 | 0 | |
|
Willis Construction WS San Benito County |
76 | 0 | 0 | |
|
Yurok Kepel County |
76 | 7 | 1 | |
|
A1 Winstons Mobile Home Park San Joaquin County |
75 | 2 | 1 | |
|
Ananda Retreat Center Nevada County |
75 | 0 | 0 | |
|
Anderson Moose Lodge # 509 Shasta County |
75 | 0 | 0 | |
|
Apostolic Tabernacle Merced County |
75 | 0 | 0 | |
|
Apple Ave WS #02 Monterey County |
75 | 2 | 1 | |
|
Auberry Seventh Day Adventist Church Fresno County |
75 | 0 | 0 | |
|
Auburn Ridge Woods Placer County |
75 | 0 | 0 | |
|
Avila Valley Mutual Water CO San Luis Obispo County |
75 | 0 | 0 | |
|
Bethel Baptist Church Contra Costa County |
75 | 0 | 0 | |
|
Big Bear Administration San Bernardino County |
75 | 3 | 3 | |
|
Bradford Run RV Riverside County |
75 | 0 | 0 | |
|
Breese Subdivision 2 Tehama County |
75 | 2 | 1 | |
|
Briceland C.s.d. Humboldt County |
75 | 0 | 0 | |
|
Bridgehead Cafe Contra Costa County |
75 | 0 | 0 | |
|
Butte City Community S.d. Butte City · Glenn County |
75 | 0 | 0 | |
|
Camden Trailer Park Fresno County |
75 | 0 | 0 | |
|
Candlelight Village Mutual Water Co. El Dorado County |
75 | 0 | 0 | |
|
Cathedral Hills Mwc, INC Santa Cruz County |
75 | 2 | 0 | |
|
Cathiard Family Estate Winery Napa County |
75 | 0 | 0 | |
|
Caymus Cordelia Winery Fairfield · Solano County |
75 | 0 | 0 | |
|
Ceja-Reyes INC Yolo County |
75 | 0 | 0 | |
|
Center of Effort Winery San Luis Obispo County |
75 | 0 | 0 | |
|
China Flat Campground El Dorado County |
75 | 0 | 0 | |
|
Classic Yam Water System Merced County |
75 | 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.