All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Andis Wines Amador County |
32 | 0 | 0 | |
|
Burney Mountain Guest Ranch Shasta County |
32 | 0 | 0 | |
|
East Austin Creek Mutual Water Company Sonoma County |
32 | 0 | 0 | |
|
Elkhorn Regional Park Yolo County |
32 | 0 | 0 | |
|
J&j Grizzly Resort Plumas County |
32 | 0 | 0 | |
|
Joseph Cellars Winery Napa County |
32 | 0 | 0 | |
|
Kern River's Edge Campground Retreat Kern County |
32 | 0 | 0 | |
|
Middle Fork Mobile Home Park Plumas County |
32 | 0 | 0 | |
|
Oak Bottom CG & WC Siskiyou County |
32 | 0 | 0 | |
|
Prairie City Svra Rancho Cordova · Sacramento County |
32 | 0 | 0 | |
|
Prince Truck Stop Water System Kern County |
32 | 0 | 0 | |
|
River Ranch RV Park Plumas County |
32 | 0 | 0 | |
|
Rivers End Marina Alameda County |
32 | 0 | 0 | |
|
San Gregorio Company San Mateo County |
32 | 1 | 0 | |
|
Shasta Lake Motel Shasta County |
32 | 0 | 0 | |
|
Shay Creek HOA Alpine County |
32 | 0 | 0 | |
|
Sierra Endangered Cat Haven Fresno County |
32 | 0 | 0 | |
|
Sunnyslope Campgrounds Fresno County |
32 | 1 | 0 | |
|
Turlock Sportsman's Club Stanislaus County |
32 | 0 | 0 | |
|
Whispering Pines Apartments Mariposa County |
32 | 0 | 0 | |
|
Amador Flower Farm Amador County |
31 | 0 | 0 | |
|
Anza Borrego SP Vallecito San Diego County |
31 | 0 | 0 | |
|
Buck Meadows Lodge-Yosemite Westgate Mariposa County |
31 | 1 | 0 | |
|
Camp McCumber Water System Shasta County |
31 | 0 | 0 | |
|
Hagafen Cellars Napa County |
31 | 1 | 0 | |
|
Hanna Vineyards Sonoma County |
31 | 0 | 0 | |
|
Larkmead Vineyards Napa County |
31 | 0 | 0 | |
|
Michael Ellis School for Dog Trainers Sonoma County |
31 | 0 | 0 | |
|
O'shaughnessy Winery Napa County |
31 | 0 | 0 | |
|
Seaboard Energy California, LLC Madera County |
31 | 1 | 0 | |
|
Stevinson Bar and Grill Merced County |
31 | 0 | 0 | |
|
Willow Creek M.w.c.-Lambertville Colusa County |
31 | 0 | 0 | |
|
All Star Academy of Danville Contra Costa County |
30 | 0 | 0 | |
|
Animal Place Nevada County |
30 | 0 | 0 | |
|
Azure Acres CD Recovery Center Sonoma County |
30 | 0 | 0 | |
|
Basshole Brews Shasta County |
30 | 0 | 0 | |
|
Batterson Work Center (water) Madera County |
30 | 0 | 0 | |
|
Brentwood Marina Contra Costa County |
30 | 0 | 0 | |
|
Bud Antle, Llc-Salinas Transplant WS Monterey County |
30 | 0 | 0 | |
|
Butte Meadows Camp Butte County |
30 | 0 | 0 | |
|
Caelesta Winery Cayucos · San Luis Obispo County |
30 | 0 | 0 | |
|
Cairdean Winery Napa County |
30 | 1 | 0 | |
|
Caltrans, Tecate Cvef San Diego County |
30 | 1 | 0 | |
|
Camp Leonard, Sierra NV F.c. Sierra County |
30 | 0 | 0 | |
|
Caribou Crossroads Plumas County |
30 | 0 | 0 | |
|
Cerro Alto Campground San Luis Obispo County |
30 | 1 | 0 | |
|
Cesar Arevalo Rentals Kings County |
30 | 0 | 0 | |
|
Channel Islands National Park Ventura County |
30 | 0 | 0 | |
|
Cliff's Marina Sacramento County |
30 | 0 | 0 | |
|
Clingans Junction Cabins and Coffee Fresno County |
30 | 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.