All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Camp Nelson Water Company Tulare County |
55 | 0 | 0 | |
|
Camp Waterman Mwc San Bernardino County |
55 | 1 | 0 | |
|
Cantua Creek Vineyards, Iv, Llc. Fresno County |
55 | 0 | 0 | |
|
Cardinal Village Resort Inyo County |
55 | 0 | 0 | |
|
Cdf-Parlin Fork Conservation Camp Mendocino County |
55 | 0 | 0 | |
|
Columbine Vineyards Plant 1 Water System Kern County |
55 | 0 | 0 | |
|
Comstock Winery Sonoma County |
55 | 0 | 0 | |
|
Country Western Mhrv Stanislaus County |
55 | 1 | 1 | |
|
Del Monte Farms RD WS #03 Monterey County |
55 | 0 | 0 | |
|
Donum Estate Water System Sonoma County |
55 | 0 | 0 | |
|
Finnlees Trailer Park San Joaquin County |
55 | 0 | 0 | |
|
Foster Farms Cedar Hatchery Fresno County |
55 | 0 | 0 | |
|
Freemark Abbey Winery Napa County |
55 | 0 | 0 | |
|
Gemperle Egg Ranch Merced County |
55 | 2 | 0 | |
|
Idylwilde Tract Association Fresno County |
55 | 0 | 0 | |
|
Kim Son Monastery Santa Cruz County |
55 | 0 | 0 | |
|
Laird Family Estate Napa County |
55 | 2 | 1 | |
|
Lingate Lane Mutual Water Company Santa Barbara County |
55 | 1 | 1 | |
|
Little Baldy Water Los Angeles County |
55 | 2 | 1 | |
|
Los Angeles, City of Castaic Pwr Plant Los Angeles County |
55 | 0 | 0 | |
|
Mariposa County Public Works Department Mariposa County |
55 | 1 | 0 | |
|
McAvoy Yacht Harbor Contra Costa County |
55 | 0 | 0 | |
|
Mokelumne Mobile Senior Park San Joaquin County |
55 | 1 | 1 | |
|
Moore Learning (formerly Sheldon Acres) Sacramento County |
55 | 2 | 0 | |
|
Neil's Service Center II Solano County |
55 | 0 | 0 | |
|
Pinecrest Permittees Assn Tuolumne County |
55 | 2 | 1 | |
|
Preston Winery Sonoma County |
55 | 0 | 0 | |
|
Pit Stop County |
55 | 1 | 0 | |
|
Quail Creek Estates Mutual Water Company Santa Clara County |
55 | 0 | 0 | |
|
R-Wild Horse Ranch Tehama County |
55 | 2 | 1 | |
|
Rim Rock Water Company San Luis Obispo County |
55 | 2 | 0 | |
|
Riverside Mobile Home Park San Joaquin County |
55 | 1 | 0 | |
|
Saint Anne's Crossing Winery Sonoma County |
55 | 0 | 0 | |
|
Shasta Horizon Mobile Home Park Siskiyou County |
55 | 0 | 0 | |
|
Sierra Cascade Nursery Lassen County |
55 | 1 | 1 | |
|
Spca WS Monterey County |
55 | 1 | 1 | |
|
Stonestreet Winery Sonoma County |
55 | 0 | 0 | |
|
Town & Country Inn San Joaquin County |
55 | 0 | 0 | |
|
Usfs Dry Gulch/dirt Flat Campground Mariposa County |
55 | 0 | 0 | |
|
Valenzuela Water System San Benito County |
55 | 1 | 0 | |
|
Wagon Wheel Plaza Los Angeles County |
55 | 1 | 0 | |
|
Yosemite Valley Beef Packing CO INC Merced County |
55 | 0 | 0 | |
|
Alegria Domestic Mutual Water Company Santa Barbara County |
54 | 0 | 0 | |
|
Allan Lane Water Association Santa Cruz County |
54 | 0 | 0 | |
|
Banta Inn Water System San Joaquin County |
54 | 0 | 0 | |
|
Bethel Missionary Baptist Contra Costa County |
54 | 0 | 0 | |
|
Brassfield Estate Winery Lake County |
54 | 0 | 0 | |
|
Carpenter Winery Cayucos · San Luis Obispo County |
54 | 0 | 0 | |
|
Churn Creek Golf Course Shasta County |
54 | 0 | 0 | |
|
Corda RD WS Monterey County |
54 | 3 | 1 |
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.