All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Keefer Creek Estates Butte County |
160 | 0 | 0 | |
|
Kings Park Apartments Fresno County |
160 | 1 | 1 | |
|
Lakeview Improvement Association 1 Fresno County |
160 | 0 | 0 | |
|
Mettler Valley Mutual Los Angeles County |
160 | 1 | 0 | |
|
Mitsubishi Cement Plant Cushenbury San Bernardino County |
160 | 0 | 0 | |
|
Navalair Mobile Home Park Ventura County |
160 | 1 | 1 | |
|
Painted Cave Santa Barbara County |
160 | 0 | 0 | |
|
Pattersons Pub Mendocino County |
160 | 0 | 0 | |
|
Rountree Facility(prev. Sheriff's Rehab) Santa Cruz County |
160 | 1 | 1 | |
|
Siesta Mobile Home Park Ventura County |
160 | 2 | 1 | |
|
Sleepy Valley Water Company Los Angeles County |
160 | 0 | 0 | |
|
Sugar Pine RV Resort Tuolumne County |
160 | 2 | 0 | |
|
Surfwood Mutual Water Corporation Mendocino County |
160 | 0 | 0 | |
|
Usfs Black Oak Campground Tuolumne County |
160 | 0 | 0 | |
|
Moose Lodge 1967 Solano County |
159 | 0 | 0 | |
|
Usn Camp Michael Monsoor San Diego · San Diego County |
159 | 0 | 0 | |
|
Aqua J. Mutual Water Company Los Angeles County |
158 | 0 | 0 | |
|
Lerdo Travel Center Kern County |
158 | 0 | 0 | |
|
Musick Creek Tract Association Fresno County |
158 | 0 | 0 | |
|
Wilson Circle Mutual Water Company Inyo County |
158 | 1 | 0 | |
|
Woodson Bridge MHP Tehama County |
158 | 2 | 1 | |
|
Zamora Shell & Mini Mart Yolo County |
158 | 0 | 0 | |
|
Cedar Lake Camp INC San Bernardino County |
157 | 0 | 0 | |
|
Del Loma RV Park & CG Trinity County |
157 | 0 | 0 | |
|
Gas Point Market Shasta County |
157 | 1 | 0 | |
|
Russian River Vineyards & Restaurant Sonoma County |
157 | 0 | 0 | |
|
Sunset Park Community Sonoma County |
157 | 1 | 1 | |
|
Thomas Mountain Water Company Riverside County |
157 | 1 | 1 | |
|
Arco Ampm #42924 Bakersfield · Kern County |
156 | 0 | 0 | |
|
Big Oak Mobile Home Park Water Contra Costa County |
156 | 0 | 0 | |
|
Chitactac-Adams County Park Santa Clara County |
156 | 0 | 0 | |
|
Coppercreek Campground Plumas County |
156 | 0 | 0 | |
|
Lake Canyon Mutual Water Company Santa Clara County |
156 | 1 | 1 | |
|
Lower Line Creek Imprvmnt Assn Fresno County |
156 | 1 | 0 | |
|
MK Properties Fresno County |
156 | 1 | 0 | |
|
Riverbank Lra Stanislaus County |
156 | 1 | 1 | |
|
Sebastopol Vineyards Sonoma County |
156 | 0 | 0 | |
|
Shadow Hills RV Resort Riverside County |
156 | 1 | 0 | |
|
Silver City Water Co. Tulare County |
156 | 0 | 0 | |
|
Superior Packing CO Solano County |
156 | 0 | 0 | |
|
Tom's Place Mono County |
156 | 0 | 0 | |
|
Adair B.r. Cohn, LLC Sonoma County |
155 | 0 | 0 | |
|
Bar H Mwc San Bernardino County |
155 | 5 | 4 | |
|
Bedel Mutual Water Company Tulare County |
155 | 0 | 0 | |
|
Bradshaw Ranch Golf Course INC Sacramento County |
155 | 0 | 0 | |
|
Camp Chesebrough Santa Cruz County |
155 | 0 | 0 | |
|
Cressey School Merced County |
155 | 0 | 0 | |
|
Csp Fort Tejon Kern County |
155 | 0 | 0 | |
|
Dhs Boulevard Border Patrol San Diego County |
155 | 0 | 0 | |
|
Mjusd Browns Valley School Yuba County |
155 | 2 | 2 |
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.