All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Beasore Mutual Water Co. Madera County |
100 | 1 | 0 | |
|
Beaulieu Vineyard Napa County |
100 | 1 | 0 | |
|
Bend Elementary School Tehama County |
100 | 1 | 0 | |
|
Berea Baptist Church Stockton CA San Joaquin County |
100 | 0 | 0 | |
|
Bethel Market Contra Costa County |
100 | 0 | 0 | |
|
Birds Landing Hunting Preserve Solano County |
100 | 0 | 0 | |
|
Black Butte Junior High School Shasta County |
100 | 1 | 1 | |
|
Blue Victorian Winery Solano County |
100 | 0 | 0 | |
|
Boca Rest Campground Nevada County |
100 | 1 | 0 | |
|
Bouquet Multimedia Ventura County |
100 | 0 | 0 | |
|
Bradley Union School WS Monterey County |
100 | 2 | 1 | |
|
Brandt Farms, INC Tulare County |
100 | 0 | 0 | |
|
Brewing Lair Plumas County |
100 | 0 | 0 | |
|
Broadway Market Sonoma County |
100 | 0 | 0 | |
|
Cache Creek Canyon-Middle Site Yolo County |
100 | 1 | 0 | |
|
Cafe Beaujolais Mendocino County |
100 | 0 | 0 | |
|
Cakebread Cellar Napa County |
100 | 0 | 0 | |
|
Cal Fire-Eel River Conservation Camp Humboldt County |
100 | 2 | 1 | |
|
Caltrans-Collier Tunnel RS Del Norte County |
100 | 0 | 0 | |
|
Camp Bountiful Nevada County |
100 | 0 | 0 | |
|
Camp Nauvoo Water System El Dorado County |
100 | 1 | 0 | |
|
Camp Winthers Placer County |
100 | 0 | 0 | |
|
Canebrake County Water District San Diego County |
100 | 0 | 0 | |
|
Cdf-Konocti Conservation Camp No. 27 Lake County |
100 | 0 | 0 | |
|
Cemex Calif Cement LLC AV San Bernardino County |
100 | 1 | 0 | |
|
Cemex Calif Cement LLC VV San Bernardino County |
100 | 1 | 1 | |
|
Cherry Lane Trailer Park San Joaquin County |
100 | 0 | 0 | |
|
Church of Jesus Christ of Lds San Joaquin County |
100 | 0 | 0 | |
|
Clos DU Val Wine Co. Napa County |
100 | 0 | 0 | |
|
Cloverdale Campground Sonoma County |
100 | 0 | 0 | |
|
Cloverleaf Ranch Summer Camp Sonoma County |
100 | 0 | 0 | |
|
Comstock Mutual Water Company San Benito County |
100 | 0 | 0 | |
|
Cordova Golf Course Sacramento County |
100 | 0 | 0 | |
|
Countryside Liquors & Gas San Joaquin County |
100 | 0 | 0 | |
|
Countryside Mkt & Restrnt Bear Mtn Kern County |
100 | 0 | 0 | |
|
Creston Elementary School San Luis Obispo County |
100 | 0 | 0 | |
|
Crowley Lake General Store Mono County |
100 | 0 | 0 | |
|
Cusd District Office Calaveras County |
100 | 0 | 0 | |
|
Darrigos Water System San Joaquin County |
100 | 0 | 0 | |
|
Delta Bar and Grill Contra Costa County |
100 | 0 | 0 | |
|
Delta Farmer's Market Sacramento County |
100 | 0 | 0 | |
|
Descanso Junction San Diego County |
100 | 1 | 0 | |
|
Diamond Valley School Alpine County |
100 | 0 | 0 | |
|
Dollar General Loma Rica Yuba County |
100 | 0 | 0 | |
|
Dovid Oved Retreat Center San Bernardino County |
100 | 0 | 0 | |
|
Down Range Indoor Training Center Butte County |
100 | 0 | 0 | |
|
Duffy's Napa Valley Rehab Napa County |
100 | 0 | 0 | |
|
Ecco Madera County |
100 | 1 | 0 | |
|
Econo Lodge Inn and Suites El Dorado County |
100 | 1 | 0 | |
|
EL Cid Mexican Cuisine Madera County |
100 | 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.