All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tollhouse Market & Grill Fresno County |
30 | 0 | 0 | |
|
Twin Pines Boys Ranch Riverside County |
30 | 0 | 0 | |
|
Tuolumne Me-Wuk Ridgeline Tuolumne Me-wuk Indan Reservation · County |
30 | 0 | 0 | |
|
Usfs Fulton Work Center Kern County |
30 | 0 | 0 | |
|
Usfs Havilah Work Center Kern County |
30 | 0 | 0 | |
|
Usfs Big Bend Campground & Admin Site Placer County |
30 | 0 | 0 | |
|
Usfs-Peppermint Work Center Tulare County |
30 | 0 | 0 | |
|
Usfs-Pyramid Lake S-14 Los Angeles County |
30 | 0 | 0 | |
|
Usfs/pinehurst Work Center Fresno County |
30 | 0 | 0 | |
|
Vasquez Rocks County Park Los Angeles County |
30 | 0 | 0 | |
|
Vermilion Valley Resort Fresno County |
30 | 0 | 0 | |
|
Vista Grande Station Usfs Riverside County |
30 | 2 | 1 | |
|
Vulcan Materials Company Cal Mat Ventura County |
30 | 1 | 1 | |
|
Wayside Inn Market Lassen County |
30 | 0 | 0 | |
|
Whitmore Ballfields Mono County |
30 | 0 | 0 | |
|
Wiest Lake Imperial County |
30 | 0 | 0 | |
|
Wilson Winery Sonoma County |
30 | 0 | 0 | |
|
Wine Country Ind Park-Bldgs A&b Sonoma County |
30 | 0 | 0 | |
|
Wise Villa Winery Placer County |
30 | 0 | 0 | |
|
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 | |
|
Yurok McCoy Kenek County |
30 | 6 | 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 | |
|
Bogle Vineyards Tasting Room Yolo County |
29 | 1 | 1 | |
|
Carneros Deli Sonoma 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 | |
|
McCahon Floral WS Monterey County |
29 | 1 | 1 | |
|
McGee Creek Lodge Mono County |
29 | 0 | 0 | |
|
Mwd of SO Cal Gene Plant San Bernardino 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 | |
|
Pentecostal WS Monterey County |
29 | 1 | 1 | |
|
Pg&e Gregg Substation and GC Yard Madera County |
29 | 0 | 0 | |
|
Pheneger Creek WS Monterey 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 | |
|
Sunland Village Mobile Home Park Inyo County |
29 | 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.