All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
McCall and Kings Canyon Plaza Fresno County |
75 | 0 | 0 | |
|
McMillan Well Del Norte County |
75 | 0 | 0 | |
|
Nps Prns Sky Camp Campground Marin County |
75 | 0 | 0 | |
|
Oak Glen Steak House San Bernardino County |
75 | 0 | 0 | |
|
Olancha Mobil Mart Bishop · Inyo County |
75 | 2 | 0 | |
|
Old Borges Ranch Water Sys Contra Costa County |
75 | 0 | 0 | |
|
Pg&e Northshore Campground Shasta County |
75 | 0 | 0 | |
|
Pnf Peninsula / Wyandotte Cgs Plumas County |
75 | 0 | 0 | |
|
Potrero General Store San Diego County |
75 | 0 | 0 | |
|
Rancheria Water & Imprmnt Assn Fresno County |
75 | 0 | 0 | |
|
Reds Meadow Resort Madera County |
75 | 0 | 0 | |
|
Ridge Cafe-Water System Nevada County |
75 | 0 | 0 | |
|
San Marcos Christian Camp Santa Barbara County |
75 | 0 | 0 | |
|
Santa Margarita County Preserve San Diego County |
75 | 0 | 0 | |
|
Shasta Marina at Packers Bay Shasta County |
75 | 0 | 0 | |
|
Shasta Market Fresno County |
75 | 0 | 0 | |
|
Sorenson S Resort Alpine County |
75 | 0 | 0 | |
|
Teleli Golf Club Tuolumne County |
75 | 1 | 0 | |
|
Three Rivers Golf & Spirits, Inc. Tulare County |
75 | 0 | 0 | |
|
Tnf-Cottonwood CG Sierra County |
75 | 0 | 0 | |
|
Tnf-Little Truckee WS Sierra County |
75 | 0 | 0 | |
|
Unitarian Universalist Comm. of the Mtns Nevada County |
75 | 1 | 0 | |
|
Usfs Gregory Creek Camp Shasta County |
75 | 0 | 0 | |
|
Usfs Middle Meadows Campground Placer County |
75 | 0 | 0 | |
|
Washoe House Sonoma County |
75 | 0 | 0 | |
|
West Point Campground El Dorado County |
75 | 0 | 0 | |
|
Woods Lodge Mono County |
75 | 0 | 0 | |
|
Wrights Lake Campground El Dorado County |
75 | 0 | 0 | |
|
Cal West Best LLC Shasta County |
74 | 0 | 0 | |
|
Ebrpd Black Diamond Mines Contra Costa County |
74 | 0 | 0 | |
|
Kings River Market Tulare County |
74 | 0 | 0 | |
|
The Narrows Family Resort Lake County |
74 | 0 | 0 | |
|
Wheel-Er in Family Wheel-er In Family Resort · County |
74 | 3 | 0 | |
|
Carmel Valley Tennis Camp WS Monterey County |
73 | 0 | 0 | |
|
Echo Peak Water Association El Dorado County |
73 | 1 | 0 | |
|
Rancho Ybarra Christian Camp Los Angeles County |
73 | 0 | 0 | |
|
Russian River Winery Sonoma County |
73 | 0 | 0 | |
|
Sugarloaf Mutual Water Company Tulare County |
73 | 0 | 0 | |
|
Sundance Meadows Riverside County |
73 | 0 | 0 | |
|
The Vine Fresno County |
73 | 2 | 1 | |
|
White Chief Mountain Lodge Mariposa County |
73 | 0 | 0 | |
|
Woolls Ranch Winery Napa County |
73 | 0 | 0 | |
|
All Saints Retreat and Formation Center San Diego County |
72 | 2 | 1 | |
|
Bert's Diner Sacramento County |
72 | 1 | 0 | |
|
Foster RD WS #02 Monterey County |
72 | 0 | 0 | |
|
Julian Oaks Camp San Diego County |
72 | 0 | 0 | |
|
Bella Piazza Winery Amador County |
71 | 0 | 0 | |
|
Family Tree Farms-Traver Tulare County |
71 | 0 | 0 | |
|
Tahoe Sands Inn El Dorado County |
71 | 2 | 0 | |
|
Camp Fleming Campground El Dorado County |
70 | 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.