All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
K Barr Daughters Water System Sonoma County |
61 | 0 | 0 | |
|
Lighthouse Pointe Mendocino County |
61 | 0 | 0 | |
|
Lodi Wine & Business Center San Joaquin County |
61 | 0 | 0 | |
|
Mark West Acres Mwc Sonoma County |
61 | 0 | 0 | |
|
Misionero Vegetables WS Monterey County |
61 | 0 | 0 | |
|
Oakmont Water System Santa Clara County |
61 | 0 | 0 | |
|
Pit River XL Rancheria Pit River Tribe · County |
61 | 6 | 0 | |
|
Rack & Riddle Custom Wine Services Sonoma County |
61 | 0 | 0 | |
|
St. Francis Retreat Center San Benito County |
61 | 1 | 0 | |
|
Stuhlmuller Vineyards Sonoma County |
61 | 0 | 0 | |
|
Superior Mutual Water Company Kern County |
61 | 0 | 0 | |
|
The Red Hen San Bernardino County |
61 | 0 | 0 | |
|
Tsasdi Resort Shasta County |
61 | 0 | 0 | |
|
Agriland Farming Madera County |
60 | 1 | 0 | |
|
Alder Inn Tahoe El Dorado County |
60 | 0 | 0 | |
|
Almaden Madera Madera County |
60 | 0 | 0 | |
|
Almond Park Water System San Joaquin County |
60 | 0 | 0 | |
|
Angels Camp Rv/camping Resort Calaveras County |
60 | 0 | 0 | |
|
Angler S Ranch #3 Contra Costa County |
60 | 1 | 1 | |
|
Antelope Valley Mobile Estates Kern County |
60 | 0 | 0 | |
|
Anthony Vineyards Water System Kern County |
60 | 0 | 0 | |
|
Anza Vineyard Estates Mutual Water CO San Luis Obispo County |
60 | 0 | 0 | |
|
Aspendell Mutual Water Company Inyo County |
60 | 0 | 0 | |
|
Aguirre MHP County |
60 | 10 | 0 | |
|
Baker Commodities Inc. Fresno County |
60 | 1 | 1 | |
|
Ball Tagawa Growers San Luis Obispo County |
60 | 0 | 0 | |
|
Boland's Market Merced County |
60 | 0 | 0 | |
|
Boulevard Heights Mutual Water Sonoma County |
60 | 0 | 0 | |
|
Bumblebee Tract Imp Assoc Tuolumne County |
60 | 0 | 0 | |
|
Buttermilk Acres Water System Kern County |
60 | 0 | 0 | |
|
Byron Inn Contra Costa County |
60 | 0 | 0 | |
|
Cabot Packing, LLC Fresno County |
60 | 0 | 0 | |
|
Cachuma Village Santa Barbara County |
60 | 1 | 0 | |
|
Cal Fire Sugar Pine Conservation Camp Shasta County |
60 | 0 | 0 | |
|
Calgren Renewable Fuels Tulare County |
60 | 0 | 0 | |
|
Canyon Ranch RV Park Plumas County |
60 | 1 | 0 | |
|
Casa Ruiz Yolo County |
60 | 1 | 0 | |
|
Cathedral Wood Mutual Water Company Santa Cruz County |
60 | 0 | 0 | |
|
Clausen Meat Company Turlock · Merced County |
60 | 0 | 0 | |
|
Country Hills Estates San Luis Obispo County |
60 | 0 | 0 | |
|
Country Villa Apts Stanislaus County |
60 | 1 | 0 | |
|
Courtland Boardwalk Sacramento County |
60 | 0 | 0 | |
|
Delany WC Monterey County |
60 | 0 | 0 | |
|
Desert View Trailer Park Riverside County |
60 | 1 | 1 | |
|
Donner Trail Elementary School Nevada County |
60 | 0 | 0 | |
|
Dry Creek Store Sonoma County |
60 | 0 | 0 | |
|
Eagle's Nest Resort Tulare County |
60 | 0 | 0 | |
|
Eco Shell Tehama County |
60 | 0 | 0 | |
|
EL Rio Mobile Home Park San Joaquin County |
60 | 1 | 0 | |
|
Elkhorn RD WS #04 Monterey County |
60 | 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.