All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Oak Grove Mobile Home Park Los Angeles County |
109 | 1 | 0 | |
|
Oasis at Havasu Palms County |
109 | 2 | 1 | |
|
Saintsbury Winery Napa · Napa County |
109 | 0 | 0 | |
|
San Cayetano Mutual Water CO Ventura County |
109 | 0 | 0 | |
|
Shasta CO Csa # 13 Alpine Meadows Shasta County |
109 | 1 | 0 | |
|
Sun Mountain M.w.c. Siskiyou County |
109 | 0 | 0 | |
|
Sunrise Mutual Water Co. Tulare County |
109 | 3 | 2 | |
|
The Bridgehouse Santa Barbara County |
109 | 0 | 0 | |
|
Cal Fire-Intermountain Conservation Camp Lassen County |
108 | 0 | 0 | |
|
Calenergy (vulcan Power Plant) Imperial County |
108 | 0 | 0 | |
|
Codorniz Rec Area Eastman LK Madera County |
108 | 0 | 0 | |
|
Green Real Estate Enterprises LLC Mendocino County |
108 | 0 | 0 | |
|
Holly Hills Mwc Monterey County |
108 | 0 | 0 | |
|
Jacuzzi Winery Sonoma County |
108 | 0 | 0 | |
|
Kern CO P&r-Greenhorn Mt. Park Water Kern County |
108 | 0 | 0 | |
|
Lake Henshaw Resort Inc. San Diego County |
108 | 0 | 0 | |
|
Las Ventanas Ranch San Luis Obispo County |
108 | 0 | 0 | |
|
Lookout Roadhouse Riverside County |
108 | 0 | 0 | |
|
Mountain Valley Airport Kern County |
108 | 0 | 0 | |
|
Oakdale Cheese & Specialties Stanislaus County |
108 | 0 | 0 | |
|
Pg&e Psea Camp Pit Shasta County |
108 | 0 | 0 | |
|
Rmrc-Fairview Campground Tulare County |
108 | 0 | 0 | |
|
Usfs Hull Creek Campgd Tuolumne County |
108 | 1 | 0 | |
|
Usfs Utica Union Campground Tuolumne County |
108 | 0 | 0 | |
|
Valley Oaks MHP WS Monterey County |
108 | 1 | 0 | |
|
California Conservation Camp #14 Los Angeles County |
107 | 0 | 0 | |
|
Calvary Chapel Kern County |
107 | 0 | 0 | |
|
Forward Bible Conference El Dorado County |
107 | 0 | 0 | |
|
Kings Canyon High School Fresno County |
107 | 0 | 0 | |
|
Lafond Winery Santa Barbara County |
107 | 0 | 0 | |
|
Sunnyside Convalescent Hosp Fresno County |
107 | 4 | 2 | |
|
Balch Park Tulare County |
106 | 0 | 0 | |
|
Fcsa 01 Tamarack Fresno County |
106 | 0 | 0 | |
|
Gary Farrell Winery Sonoma County |
106 | 0 | 0 | |
|
Gold Mountain Csd Plumas County |
106 | 1 | 1 | |
|
International Paper Exeter Bulk Tulare County |
106 | 2 | 1 | |
|
Jameson Ranch Camp Kern County |
106 | 3 | 0 | |
|
Journey S End Resort Trinity County |
106 | 0 | 0 | |
|
Kings River Estates Mutual Water Company Tulare County |
106 | 1 | 1 | |
|
Laird Wine Studio Napa County |
106 | 1 | 0 | |
|
Mountain Creek School El Dorado County |
106 | 1 | 1 | |
|
ND Daniel's Investment LLC San Diego County |
106 | 0 | 0 | |
|
Paradise Mobile Estates San Bernardino County |
106 | 1 | 0 | |
|
Pleasure Cove Resort Napa County |
106 | 0 | 0 | |
|
South Fork Estates Mutual Water CO Tulare County |
106 | 0 | 0 | |
|
Vista del Lago County |
106 | 0 | 0 | |
|
Walnut Acres San Joaquin County |
106 | 0 | 0 | |
|
Wildwood Mobile Home PK INC Madera County |
106 | 1 | 1 | |
|
Anaba Winery Sonoma County |
105 | 0 | 0 | |
|
Camp Joe Scherman Riverside County |
105 | 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.