All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Twin Cypress Mobile Home Park Stanislaus County |
112 | 0 | 0 | |
|
United Parcel Service Calaveras County |
112 | 0 | 0 | |
|
Weed Golf Club, Inc. Siskiyou County |
112 | 0 | 0 | |
|
West Park Properties Del Norte County |
112 | 2 | 2 | |
|
Camanche South Shore-Ebmud Calaveras County |
111 | 0 | 0 | |
|
Fresh Innovations LLC San Joaquin County |
111 | 0 | 0 | |
|
Kirkwood Elementary School Tehama County |
111 | 0 | 0 | |
|
Lazy J Ranch Motel Tulare County |
111 | 1 | 0 | |
|
Midway Stars 76 Gas Station & Food Mart Vacaville · Solano County |
111 | 0 | 0 | |
|
Owl Harbor Sacramento County |
111 | 0 | 0 | |
|
Sveadal Water System Santa Clara County |
111 | 0 | 0 | |
|
6200 Franklin, LLC (sws) Sacramento County |
110 | 0 | 0 | |
|
Altman Plants WS #03 Espinosa 303 Monterey County |
110 | 0 | 0 | |
|
Btqc-Escalon San Joaquin County |
110 | 0 | 0 | |
|
Calvary Chapel of Red Bluff Tehama County |
110 | 1 | 1 | |
|
Cdf Owens Valley Conservation Camp Inyo County |
110 | 1 | 1 | |
|
Cdf-Chamberlain Creek Conservation Camp Mendocino County |
110 | 1 | 1 | |
|
Chisan Orchids Nursery Santa Barbara County |
110 | 1 | 1 | |
|
Copus Road LLC Kern County |
110 | 0 | 0 | |
|
Crystal Geyser Bottling Plant Inyo County |
110 | 1 | 1 | |
|
Del Rio East HOA Water System Stanislaus County |
110 | 1 | 1 | |
|
Duck Island RV Park Sacramento County |
110 | 0 | 0 | |
|
Floriston Water System Nevada County |
110 | 3 | 1 | |
|
Foster Farms Chicken Livehaul (sycamore Merced County |
110 | 1 | 0 | |
|
Halcyon Water System San Luis Obispo County |
110 | 3 | 1 | |
|
Hughson Nut Company Water System Stanislaus County |
110 | 0 | 0 | |
|
Kamp Klamath Corp. Del Norte County |
110 | 1 | 0 | |
|
Mission Farm R.v. Park San Benito County |
110 | 1 | 1 | |
|
Mjusd Cordua School Yuba County |
110 | 2 | 2 | |
|
Mountain Valley Latter-Day Saints Church Lassen County |
110 | 0 | 0 | |
|
Placer Cwa Bianchi Estates Placer County |
110 | 0 | 0 | |
|
Rancho del Paradiso-Cal Water Svc (puc) Sonoma County |
110 | 0 | 0 | |
|
Ratto Bros, INC Stanislaus County |
110 | 0 | 0 | |
|
Russos Mobile Park Contra Costa County |
110 | 2 | 2 | |
|
San Joaquin Fair 2nd District San Joaquin County |
110 | 1 | 0 | |
|
Santa Cruz KOA Campgrounds Santa Cruz County |
110 | 0 | 0 | |
|
Schulte Road Warehouse 3, LLC Wtr Sys San Joaquin County |
110 | 0 | 0 | |
|
Sievers Water Works Vacaville · Solano County |
110 | 0 | 0 | |
|
Thomas Water System Lakeport · Lake County |
110 | 0 | 0 | |
|
Three Springs Ranch Mutual Water Company Santa Clara County |
110 | 0 | 0 | |
|
Triumphant Life Camp Humboldt County |
110 | 0 | 0 | |
|
Torres-Martinez Avenue 64 County |
110 | 1 | 0 | |
|
Usda-Fs Landslide/logger/aspen Camps Fresno County |
110 | 0 | 0 | |
|
Usfs-Sunset Point Campground Lake County |
110 | 0 | 0 | |
|
William Tell House Marin County |
110 | 0 | 0 | |
|
Yosemite Forks Est Mutual Madera County |
110 | 1 | 0 | |
|
Del Oro WC Larkspur Meadows Tehama County |
109 | 0 | 0 | |
|
Fcpg/lost Lake Recreation Area Fresno County |
109 | 0 | 0 | |
|
Gurudwara Guru Nanak Sahib Stanislaus County |
109 | 0 | 0 | |
|
Naggiar Vineyards Nevada County |
109 | 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.