All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sugarloaf Water System Sonoma County |
42 | 0 | 0 | |
|
Sunnygem Juice Plant Kern County |
42 | 0 | 0 | |
|
Usfs French Gulch Campground WS Kern County |
42 | 0 | 0 | |
|
West Tech Industrial Park Fresno County |
42 | 2 | 1 | |
|
White Lotus Santa Barbara County |
42 | 0 | 0 | |
|
11:11 Winery Napa County |
41 | 0 | 0 | |
|
Bay Standards Contra Costa County |
41 | 1 | 1 | |
|
Brandon Creek Mws Monterey County |
41 | 1 | 1 | |
|
Caltrans Visalia Maintenance Station Tulare County |
41 | 2 | 2 | |
|
Delano Growers Grape Products Kern County |
41 | 1 | 0 | |
|
Don Pedro Rec Ag:flem.meadows Tuolumne County |
41 | 1 | 0 | |
|
Fantesca Winery Napa County |
41 | 0 | 0 | |
|
Foothill Apartments Tulare County |
41 | 1 | 0 | |
|
Fresno Memorial Gardens Fresno · Fresno County |
41 | 0 | 0 | |
|
Gonzalez MHP County |
41 | 3 | 0 | |
|
Hartley Mutual Water System Butte County |
41 | 1 | 1 | |
|
Henry Miller Reclamation District Merced County |
41 | 0 | 0 | |
|
Indian Creek Trailer Park Trinity County |
41 | 2 | 1 | |
|
Langtry Farms Lake County |
41 | 0 | 0 | |
|
Mad River Compound Usfs Trinity County |
41 | 0 | 0 | |
|
McEvoy Ranch Water System Marin County |
41 | 0 | 0 | |
|
Riverside Crossing MHP Tehama County |
41 | 2 | 1 | |
|
Ranchos los Ferro MHP County |
41 | 1 | 0 | |
|
Zichichi Winery Sonoma County |
41 | 0 | 0 | |
|
Alba WS Monterey County |
40 | 0 | 0 | |
|
Alhatti Christian Mountain Res Riverside County |
40 | 0 | 0 | |
|
Almira Water Association San Luis Obispo County |
40 | 2 | 0 | |
|
Anderson Mobile Home Park Shasta County |
40 | 1 | 0 | |
|
Angelo Lane Water Company Santa Clara County |
40 | 0 | 0 | |
|
Apple Valley Farms Sonora · Tuolumne County |
40 | 1 | 0 | |
|
Auteur Russian River Winery Sonoma County |
40 | 0 | 0 | |
|
Avi Kwa Ame Farms North County |
40 | 4 | 3 | |
|
Berry DR WS #02 Monterey County |
40 | 0 | 0 | |
|
Black Hawk Lodge Madera County |
40 | 0 | 0 | |
|
Britz/colusa Fresno County |
40 | 1 | 0 | |
|
Bucks Lake Lodge & Timberline Lodge Plumas County |
40 | 0 | 0 | |
|
Building Trades Assoc Sacramento County |
40 | 0 | 0 | |
|
Calera Canyon Heights HOA Monterey County |
40 | 0 | 0 | |
|
Calvary Chapel Church Imperial County |
40 | 1 | 0 | |
|
Calvary Concow Church Butte County |
40 | 0 | 0 | |
|
Camp Wilderness Tulare County |
40 | 0 | 0 | |
|
Carrisa Plains Elementary San Luis Obispo County |
40 | 1 | 0 | |
|
Casa Grande Motel Madera County |
40 | 0 | 0 | |
|
Cedar Creek Mobilehome Park Shasta County |
40 | 1 | 1 | |
|
Chamisal Vineyards Cayucos · San Luis Obispo County |
40 | 0 | 0 | |
|
Chiri Sweet Water Company Santa Clara County |
40 | 1 | 0 | |
|
Cinco Poses Camp Usfs Riverside County |
40 | 0 | 0 | |
|
Clear Creek Latter Day Saints Church Susanville · Lassen County |
40 | 0 | 0 | |
|
Clear Creek Water Company Sonoma County |
40 | 0 | 0 | |
|
Coarsegold Self Serve Madera County |
40 | 1 | 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.