All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bella Grace Vineyards Plymouth · Amador County |
27 | 1 | 0 | |
|
Belmont Temperance Property Water System Fresno County |
27 | 2 | 0 | |
|
Biddle Regional County Park San Luis Obispo County |
27 | 0 | 0 | |
|
Blm San Joaquin River Gorge Fresno County |
27 | 1 | 0 | |
|
Bullfrog Landing Marina San Joaquin County |
27 | 0 | 0 | |
|
Capay Open Space Park Yolo County |
27 | 0 | 0 | |
|
Cedar Lodge Motel Plumas County |
27 | 0 | 0 | |
|
Coyote Valley Sporting Clays Santa Clara County |
27 | 1 | 1 | |
|
David Bruce Winery Santa Cruz County |
27 | 1 | 0 | |
|
Days End RV Park Lassen County |
27 | 0 | 0 | |
|
Del Dotto Winery Napa County |
27 | 0 | 0 | |
|
Dorabelle Mutual Water Company Fresno County |
27 | 0 | 0 | |
|
Driftwood Mobilehome Park Fresno County |
27 | 0 | 0 | |
|
Field Stone Winery Sonoma County |
27 | 0 | 0 | |
|
Finleys San Joaquin County |
27 | 0 | 0 | |
|
Furthermore Wines Water System Sonoma County |
27 | 0 | 0 | |
|
Harmony Water Works San Luis Obispo County |
27 | 0 | 0 | |
|
Hot Creek Ranch Mono County |
27 | 0 | 0 | |
|
Houseboat Mini Mart Tuolumne County |
27 | 1 | 0 | |
|
Jarvis Vineyard Napa County |
27 | 1 | 0 | |
|
Kandola Farms Produce, Inc. Merced County |
27 | 0 | 0 | |
|
Karah Estate Winery Sonoma County |
27 | 1 | 1 | |
|
Latin Market 2 Mono County |
27 | 0 | 0 | |
|
Los Prietos Improvement Association Santa Barbara County |
27 | 0 | 0 | |
|
Mendocino Grove Mendocino County |
27 | 0 | 0 | |
|
Mendocino Inn and Farm a Mendocino County |
27 | 0 | 0 | |
|
Mendocino Inn and Farm B Mendocino County |
27 | 0 | 0 | |
|
Nps Death Valley, Grapevine RS Inyo County |
27 | 0 | 0 | |
|
Oasis Cafe WS Monterey County |
27 | 0 | 0 | |
|
Quaker Center Santa Cruz County |
27 | 0 | 0 | |
|
White Rock Club WS Monterey County |
27 | 1 | 0 | |
|
4937 Beckwith Water System Stanislaus County |
26 | 0 | 0 | |
|
5801 McHenry Ave Stanislaus County |
26 | 0 | 0 | |
|
Anza Borrego SP Horse Camp San Diego County |
26 | 0 | 0 | |
|
Basso Bridge Fishing/boating Access Stanislaus County |
26 | 0 | 0 | |
|
Beckley Lyons Water System Stanislaus County |
26 | 0 | 0 | |
|
Borjon Winery Amador County |
26 | 2 | 0 | |
|
Caltrans, Sand Hill Rest Stop Imperial County |
26 | 1 | 0 | |
|
City of Oakdale -Kerr Park Stanislaus County |
26 | 0 | 0 | |
|
Copain Wine Cellars Sonoma County |
26 | 0 | 0 | |
|
Cressey Store Merced County |
26 | 0 | 0 | |
|
Dinkey Creek Inn Fresno County |
26 | 1 | 0 | |
|
Farmer Water System Sonoma County |
26 | 0 | 0 | |
|
Farmers Mini Mart Kings County |
26 | 0 | 0 | |
|
Farmers' Den /market Stanislaus County |
26 | 1 | 0 | |
|
Fog Eater Cafe Mendocino County |
26 | 0 | 0 | |
|
Fox Grove Fishing Access Stanislaus County |
26 | 0 | 0 | |
|
Frank Raines Park Ohv Stanislaus County |
26 | 0 | 0 | |
|
Fritz Winery and Vineyard Sonoma County |
26 | 0 | 0 | |
|
Gawfco Enterprises, Inc. Stanislaus County |
26 | 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.