All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Beasore Mutual Water Co. Madera 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 | |
|
Blue Victorian Winery Solano County |
100 | 0 | 0 | |
|
Boca Rest Campground Nevada County |
100 | 1 | 0 | |
|
Bouquet Multimedia Ventura 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 | |
|
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 | |
|
Church of Jesus Christ of Lds San Joaquin County |
100 | 0 | 0 | |
|
Cloverdale Campground Sonoma County |
100 | 0 | 0 | |
|
Cloverleaf Ranch Summer Camp Sonoma 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 | |
|
Crowley Lake General Store Mono 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 | |
|
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 | |
|
Econo Lodge Inn and Suites El Dorado County |
100 | 1 | 0 | |
|
EL Cid Mexican Cuisine Madera County |
100 | 0 | 0 | |
|
EL Coyote Loco San Bernardino County |
100 | 1 | 0 | |
|
EL Mirage Market San Bernardino County |
100 | 0 | 0 | |
|
EL Monte County Park San Diego County |
100 | 0 | 0 | |
|
Escalon Livestock Mkt San Joaquin County |
100 | 0 | 0 | |
|
Excel Gas and Market Yolo County |
100 | 0 | 0 | |
|
Fll Mutual El Dorado County |
100 | 1 | 0 | |
|
Flying V Station Sacramento County |
100 | 0 | 0 | |
|
Fort Ross Vineyard Sonoma County |
100 | 0 | 0 | |
|
Fox Sparrow RV Park El Dorado County |
100 | 2 | 0 | |
|
Friday's Retreat Shasta County |
100 | 0 | 0 | |
|
Gene Norris Plaza Napa County |
100 | 0 | 0 | |
|
Grace Community Fellowship Tehama County |
100 | 0 | 0 | |
|
Gray's Mart and Gas El Dorado County |
100 | 2 | 0 | |
|
Hastings Island Hunting Preserve Solano County |
100 | 0 | 0 | |
|
Heauser's Plaza Center Nevada County |
100 | 0 | 0 | |
|
High Sierra Meadow Mutual Water Madera County |
100 | 0 | 0 | |
|
Holiday Harbor Marina San Joaquin 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.