All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cleone Campground and Grocery Mendocino County |
81 | 0 | 0 | |
|
Deer Creek Lodge Tehama County |
81 | 0 | 0 | |
|
Fcsa 10a Mansionette Estates Fresno County |
81 | 0 | 0 | |
|
Franklin Elementary School Sacramento County |
81 | 0 | 0 | |
|
Hidden Valley WA Monterey County |
81 | 3 | 2 | |
|
Lakeview Terrace Resort Trinity County |
81 | 0 | 0 | |
|
Mesa Grande Black Canyon County |
81 | 3 | 1 | |
|
North Wawona Estates (b System) Mariposa County |
81 | 0 | 0 | |
|
Oasis Palms RV Resort Riverside County |
81 | 0 | 0 | |
|
Psmcsd Langley/valle Pacifico WS Monterey County |
81 | 0 | 0 | |
|
Questhaven Municipal Water District San Diego County |
81 | 2 | 0 | |
|
Shingletown Professional Bldg Shasta County |
81 | 0 | 0 | |
|
Anza Baptist Church Riverside County |
80 | 0 | 0 | |
|
At&t Water System Stanislaus County |
80 | 1 | 1 | |
|
Baldy Mountain Ranch Riverside County |
80 | 0 | 0 | |
|
Bambi Inn Butte County |
80 | 0 | 0 | |
|
Bear Valley YMCA Camp Placer County |
80 | 0 | 0 | |
|
Bella Shores Mobile Home Park Mendocino County |
80 | 0 | 0 | |
|
Brander Vineyard Santa Barbara County |
80 | 0 | 0 | |
|
Cal Fire-High Rock Conservation Camp Humboldt County |
80 | 3 | 2 | |
|
California Caverns Calaveras County |
80 | 0 | 0 | |
|
California State Fair Sacramento County |
80 | 0 | 0 | |
|
Camp Williams-Resort Water Los Angeles County |
80 | 0 | 0 | |
|
Canyon School Contra Costa County |
80 | 1 | 1 | |
|
Chapel in the Pines Riverside County |
80 | 0 | 0 | |
|
Crass Mutual Water Company Madera County |
80 | 1 | 1 | |
|
Crossover Community Church Fresno County |
80 | 2 | 0 | |
|
Desert Aire Golf Course Los Angeles County |
80 | 0 | 0 | |
|
Dollar General Doyle Lassen County |
80 | 0 | 0 | |
|
Famoso Nut Company Kern County |
80 | 0 | 0 | |
|
Four Star Fruit Delano · Tulare County |
80 | 1 | 0 | |
|
Free Will Baptist Church WS Monterey County |
80 | 0 | 0 | |
|
G & J Properties Butte County |
80 | 1 | 0 | |
|
Green Mountain Water Company Santa Clara County |
80 | 1 | 0 | |
|
Hidden Acres Trailer Villa Solano County |
80 | 1 | 1 | |
|
Indian Springs Campground Nevada County |
80 | 1 | 0 | |
|
John Hovannisian Water System Madera County |
80 | 8 | 1 | |
|
Junction City School Junction City · Trinity County |
80 | 2 | 0 | |
|
Kings Canyon Mobile Home Park Fresno County |
80 | 0 | 0 | |
|
Laguna Negra Mutual Water Co. San Luis Obispo County |
80 | 1 | 0 | |
|
Lancaster Water Company Los Angeles County |
80 | 1 | 1 | |
|
Larry a Shehadey Dairy Fresno County |
80 | 0 | 0 | |
|
Lion Raisins Packing Company Fresno County |
80 | 1 | 1 | |
|
Live Oak Acres Mwc Inc. Tehama County |
80 | 2 | 1 | |
|
Locke Water Works CO [sws] Sacramento County |
80 | 1 | 1 | |
|
McBride Springs Campground Siskiyou County |
80 | 0 | 0 | |
|
Mescal Creek Water, INC Los Angeles County |
80 | 2 | 2 | |
|
Morning Star King, LLC Kings County |
80 | 1 | 1 | |
|
New Life Marina Contra Costa County |
80 | 0 | 0 | |
|
Northern California Vipassana Center Lake County |
80 | 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.