All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wonderful Pistachios & Almonds-El Dorado Fresno County |
30 | 0 | 0 | |
|
YMCA Camp Whittle San Bernardino County |
30 | 1 | 0 | |
|
Yolo Fruit Stand Water Yolo County |
30 | 2 | 0 | |
|
Yolo Sportsmen's Assoc Yolo County |
30 | 0 | 0 | |
|
Yongs Bar & Grill Water System San Joaquin County |
30 | 1 | 0 | |
|
Zialena Winery Sonoma County |
30 | 0 | 0 | |
|
Zuckerman, Roscoe 39-316 San Joaquin County |
30 | 0 | 0 | |
|
American Legion Post 751 San Bernardino County |
29 | 0 | 0 | |
|
Casillas Water System Tulare County |
29 | 0 | 0 | |
|
Country Inn, the Napa County |
29 | 1 | 0 | |
|
Eleven Confessions Winery Santa Barbara County |
29 | 0 | 0 | |
|
German Guys San Joaquin County |
29 | 0 | 0 | |
|
Green Acres Mobile Park Riverside County |
29 | 1 | 0 | |
|
Lockeford Springs Golf Course San Joaquin County |
29 | 0 | 0 | |
|
McGee Creek Lodge Mono County |
29 | 0 | 0 | |
|
Nalle Winery Healdsburg · Sonoma County |
29 | 0 | 0 | |
|
Newberry Springs Senior Center San Bernardino County |
29 | 0 | 0 | |
|
Oxxo Mini Mart Merced County |
29 | 0 | 0 | |
|
San Saba Winery WS Monterey County |
29 | 0 | 0 | |
|
Santa Barbara Pistachio Company Santa Barbara County |
29 | 0 | 0 | |
|
Shoreline Cottages Mendocino County |
29 | 0 | 0 | |
|
Stewarts Point Water System Sonoma County |
29 | 0 | 0 | |
|
Bryant Creek/fir Tracts Mwa El Dorado County |
28 | 1 | 0 | |
|
Camp la Verne San Bernardino County |
28 | 2 | 0 | |
|
Cedar Slope Mutual Water Company Tulare County |
28 | 0 | 0 | |
|
Center of the World Imperial County |
28 | 1 | 0 | |
|
Chevron Lindsay Lindsay · Tulare County |
28 | 0 | 0 | |
|
Christian Service Center of Senator Wash Imperial County |
28 | 0 | 0 | |
|
Csp-Nature Center Santa Cruz County |
28 | 0 | 0 | |
|
Curotto Enterprises 2 LLC Sonoma County |
28 | 0 | 0 | |
|
Golden Arco Stanislaus County |
28 | 0 | 0 | |
|
Ham's Station Amador County |
28 | 1 | 0 | |
|
Haven of Peace San Joaquin County |
28 | 0 | 0 | |
|
Idle Wild Market San Joaquin County |
28 | 0 | 0 | |
|
Kathryn Hall Winery Napa County |
28 | 0 | 0 | |
|
Kennedy Meadows General Store Tulare County |
28 | 1 | 0 | |
|
Lang Ranch Shopping Center Los Angeles County |
28 | 0 | 0 | |
|
Miner's Leap Winery Yolo County |
28 | 0 | 0 | |
|
North Wawona Park Mutual (a System) Mariposa County |
28 | 0 | 0 | |
|
Padmasambhava Peace Institute Sonoma County |
28 | 0 | 0 | |
|
Plasse Homestead Water Association Amador County |
28 | 0 | 0 | |
|
Rock Creek Lake Campground Inyo County |
28 | 0 | 0 | |
|
Rollin Wagon Trailer Club Madera County |
28 | 1 | 0 | |
|
Santa Cruz Mountain Pure WC Santa Cruz County |
28 | 1 | 0 | |
|
The Mercantile Lake County |
28 | 0 | 0 | |
|
The Point at Shaver Lake Fresno · Fresno County |
28 | 0 | 0 | |
|
Wildwood Acres Resort Contra Costa County |
28 | 0 | 0 | |
|
Wm. B. Ide Adobe Tehama County |
28 | 0 | 0 | |
|
Alexander Valley Store & Bar Sonoma County |
27 | 0 | 0 | |
|
All Saints Campground WS Monterey County |
27 | 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.