All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Yolo CO Central Landfill Yolo County |
40 | 2 | 1 | |
|
Yuba Apartment Homes Sutter County |
40 | 1 | 1 | |
|
Zone 7 Water Agency Alameda County |
40 | 0 | 0 | |
|
60th Street Assoc. Water System Kern County |
39 | 1 | 0 | |
|
Ali Mutual Water CO Tulare County |
39 | 1 | 1 | |
|
Artesa Vineyards & Winery Napa County |
39 | 0 | 0 | |
|
Behrens Family Winery Napa County |
39 | 0 | 0 | |
|
Dominus Estate Winery Napa County |
39 | 0 | 0 | |
|
East Nicolaus Mwc Sutter County |
39 | 0 | 0 | |
|
Enclave at the Delta San Joaquin County |
39 | 0 | 0 | |
|
Four Bar C Farms Fresno County |
39 | 2 | 0 | |
|
Fremont One San Joaquin County |
39 | 1 | 0 | |
|
Friends RV Park Tulare County |
39 | 0 | 0 | |
|
Halter Ranch San Luis Obispo County |
39 | 0 | 0 | |
|
Heath Brimhall P.o.a. Kern County |
39 | 0 | 0 | |
|
Heather Lake Road Tract El Dorado County |
39 | 0 | 0 | |
|
Hudson Ranch Power I LLC Imperial County |
39 | 1 | 0 | |
|
Jada Vineyard and Winery San Simeon · San Luis Obispo County |
39 | 0 | 0 | |
|
Junction Motel Riverside County |
39 | 0 | 0 | |
|
Lodi Homes San Joaquin County |
39 | 0 | 0 | |
|
Los Madrones Mwc San Benito County |
39 | 0 | 0 | |
|
Milton Road Water Company Napa County |
39 | 1 | 1 | |
|
North Coast Wine Co. Sonoma County |
39 | 1 | 1 | |
|
Olancha RV and MHP Inyo County |
39 | 0 | 0 | |
|
Pappas & CO (mendota) Fresno County |
39 | 1 | 1 | |
|
Pg&e Rodgers Flat Service Center Plumas County |
39 | 0 | 0 | |
|
Redwoods River Resort & Campground Mendocino County |
39 | 0 | 0 | |
|
Santa Clara School Ventura County |
39 | 0 | 0 | |
|
Sequoia Bible Fellowship Fresno County |
39 | 0 | 0 | |
|
Sierra Outdoor School Tuolumne County |
39 | 1 | 0 | |
|
Sjrp Coke Hallowell Center Fresno · Fresno County |
39 | 0 | 0 | |
|
Sonoma Coast Villa Sonoma County |
39 | 0 | 0 | |
|
Sugarloaf Village Mutual Water Company Tulare County |
39 | 0 | 0 | |
|
Tamarack Lodge Placer County |
39 | 1 | 0 | |
|
Yosemite Riverside Inn Tuolumne County |
39 | 2 | 0 | |
|
Big Creek Community Serv Dist Fresno County |
38 | 2 | 2 | |
|
Chalk Hill Estates HOA Lompoc · Santa Barbara County |
38 | 0 | 0 | |
|
Coldbrook Campground Los Angeles County |
38 | 0 | 0 | |
|
Cook's Station Amador County |
38 | 0 | 0 | |
|
Country Corners Riverside County |
38 | 0 | 0 | |
|
Dale Davis Enos Lane Facility Kern County |
38 | 0 | 0 | |
|
Dspud-Big Bend Placer County |
38 | 0 | 0 | |
|
Dutton Farmworker Housing Sonoma County |
38 | 0 | 0 | |
|
Dwr-Sutter Maintenance Yard Sutter County |
38 | 0 | 0 | |
|
Foster Farms-Ellenwood Hatchery Stanislaus County |
38 | 0 | 0 | |
|
Gene Wines LLC Napa County |
38 | 0 | 0 | |
|
Greenhaven HOA Plumas County |
38 | 0 | 0 | |
|
Hanot Foundation INC San Joaquin County |
38 | 0 | 0 | |
|
Honig Winery Napa County |
38 | 0 | 0 | |
|
J G Boswell Tomato Company LLC Kern County |
38 | 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.