All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Huttopia Paradise Springs Los Angeles County |
302 | 1 | 0 | |
|
LA Vina School Madera County |
302 | 0 | 0 | |
|
Lighthouse Trailer Resort San Bernardino County |
302 | 1 | 0 | |
|
Sikh Gurdwara Santa Rosa Sonoma County |
302 | 0 | 0 | |
|
A W Way Humboldt Co. Parks Humboldt County |
301 | 0 | 0 | |
|
Camp Arev Kern County |
301 | 0 | 0 | |
|
Cazadero Performing Arts Camp Sonoma County |
301 | 0 | 0 | |
|
Summerfield Waldorf School Sonoma County |
301 | 0 | 0 | |
|
Sun Pacific Tulare Tulare County |
301 | 4 | 2 | |
|
Tahoe City Pud Timberland Placer County |
301 | 0 | 0 | |
|
8986 Deep Creek Road San Bernardino County |
300 | 1 | 0 | |
|
Anderson Valley High School Mendocino County |
300 | 0 | 0 | |
|
Angelina Humboldt County |
300 | 0 | 0 | |
|
Barrett Lake MH and RV LLC San Diego County |
300 | 1 | 0 | |
|
Beringer Vineyards Napa County |
300 | 0 | 0 | |
|
Big Lagoon Humboldt Co. Parks Humboldt County |
300 | 0 | 0 | |
|
Big Pine Tract San Bernardino County |
300 | 1 | 1 | |
|
Black Butte Lake, Headquarters, Uscoe Tehama County |
300 | 0 | 0 | |
|
Branger Mutual Water Company, Inc. Sonoma County |
300 | 1 | 1 | |
|
Brookside Equestrian Park Sacramento County |
300 | 1 | 0 | |
|
Cal Trans Crestview Rest Area Mono County |
300 | 0 | 0 | |
|
Cal Trans Division Creek Inyo County |
300 | 1 | 1 | |
|
Camp Gilboa San Bernardino County |
300 | 1 | 0 | |
|
Camp Winton Amador County |
300 | 0 | 0 | |
|
Campo Elementary School San Diego County |
300 | 3 | 0 | |
|
Cherokee Memorial Park INC Water System San Joaquin County |
300 | 0 | 0 | |
|
Chevron San Joaquin Kern County |
300 | 0 | 0 | |
|
Chowchilla Cong of J W S Madera County |
300 | 0 | 0 | |
|
City of San Diego EL Capitan Reservoir San Diego County |
300 | 0 | 0 | |
|
Cosumnes River Preserve Visitor (blm) Sacramento County |
300 | 0 | 0 | |
|
County Service Area 7 San Mateo County |
300 | 1 | 0 | |
|
Covenant Grove Church Stanislaus County |
300 | 0 | 0 | |
|
Creekside Village Nevada County |
300 | 0 | 0 | |
|
Csa 70-F Morongo San Bernardino County |
300 | 1 | 0 | |
|
Denny Boys Water System San Joaquin County |
300 | 1 | 0 | |
|
Dunneville Market & Kitchen San Benito County |
300 | 0 | 0 | |
|
East Walnut Grove [sws] Sacramento County |
300 | 1 | 1 | |
|
EL Taco Loco Kern County |
300 | 0 | 0 | |
|
Elevate Camps Small Water System Shasta County |
300 | 0 | 0 | |
|
Empire Rest Stop (caltrans) Mendocino County |
300 | 0 | 0 | |
|
Escalon Premier Brands San Joaquin County |
300 | 1 | 0 | |
|
Fast and EZ Trip Madera · Madera County |
300 | 0 | 0 | |
|
First Baptist Church Yolo County |
300 | 0 | 0 | |
|
Franks One/stop Food Mart Water Sys San Joaquin County |
300 | 0 | 0 | |
|
Glenhaven Mutual Water Company Lake County |
300 | 0 | 0 | |
|
Grimmway Farms Frozen Foods Kern County |
300 | 0 | 0 | |
|
Grizzly Creek Ranch Snj Plumas County |
300 | 1 | 1 | |
|
Heavenly Oaks San Diego County |
300 | 1 | 1 | |
|
Heringer Estates Winery West Sacramento · Yolo County |
300 | 2 | 0 | |
|
Holland Heights Mutual Water Company Sonoma County |
300 | 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.