All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Home Creek Tract Fresno County |
50 | 0 | 0 | |
|
Honda Proving Center Kern County |
50 | 0 | 0 | |
|
Hunter Ranch Golf Course San Luis Obispo County |
50 | 0 | 0 | |
|
Hunter's Fishing Resort Tehama County |
50 | 1 | 1 | |
|
Inyo County Pwd Laws Town Inyo County |
50 | 3 | 3 | |
|
Italian Athletic Club San Joaquin County |
50 | 1 | 0 | |
|
J B Hunt Transport INC San Joaquin County |
50 | 0 | 0 | |
|
J Vineyards & Winery Sonoma County |
50 | 0 | 0 | |
|
Jakov Dulcich & Sons Water System Kern County |
50 | 0 | 0 | |
|
Jordan Vineyard & Winery Sonoma County |
50 | 0 | 0 | |
|
Keller Estate Winery Sonoma County |
50 | 0 | 0 | |
|
Kenwood Vineyards and Winery Sonoma County |
50 | 0 | 0 | |
|
Kiefer Landfill [sws] Sacramento County |
50 | 1 | 1 | |
|
Kings Country Club Kings County |
50 | 0 | 0 | |
|
Kings River Winery Fresno County |
50 | 0 | 0 | |
|
Kitayama Brothers Watsonville · Santa Cruz County |
50 | 1 | 1 | |
|
Ko-Ket Resort Sacramento County |
50 | 0 | 0 | |
|
Laguna Vista Boat Club San Luis Obispo County |
50 | 0 | 0 | |
|
Lake Alpine Rec. Area Alpine County |
50 | 0 | 0 | |
|
Lake Don Pedro Homeowners Tuolumne County |
50 | 1 | 0 | |
|
Lake Haven Resort Plumas County |
50 | 0 | 0 | |
|
Lancaster Park Mobile Home Park Los Angeles County |
50 | 1 | 0 | |
|
Laura Chenel's Chevre Inc. Sonoma County |
50 | 1 | 1 | |
|
Lincoln High School Farm Placer County |
50 | 0 | 0 | |
|
Living Springs Church Los Angeles County |
50 | 0 | 0 | |
|
Lnf Almanor CG Plumas County |
50 | 0 | 0 | |
|
Lodi Airport Cafe San Joaquin County |
50 | 0 | 0 | |
|
Lucia WS Monterey County |
50 | 0 | 0 | |
|
M & L Cold Storage Water System Kern County |
50 | 0 | 0 | |
|
Madera Irrigation District Madera County |
50 | 4 | 2 | |
|
Maif Marshall Aqua Improvement Forum Marin County |
50 | 0 | 0 | |
|
Marquez Rental Madera County |
50 | 2 | 0 | |
|
Marshall Boat Works Marin County |
50 | 0 | 0 | |
|
Mattole Elementary School Humboldt County |
50 | 2 | 1 | |
|
McPr Darrah School Park Mariposa County |
50 | 0 | 0 | |
|
McPr-Midpines Park Mariposa County |
50 | 0 | 0 | |
|
Mdf-Adin Ranger Station Modoc County |
50 | 0 | 0 | |
|
Meadowbrook Oaks Butte County |
50 | 4 | 2 | |
|
Mendocino Hotel Mendocino County |
50 | 0 | 0 | |
|
Merriam Winery Sonoma County |
50 | 0 | 0 | |
|
MI Ranchito Restaurant Yuba County |
50 | 0 | 0 | |
|
Michel-Schlumberger Fine Wine Estate Sonoma County |
50 | 0 | 0 | |
|
Midway Mobilehome Park Shasta County |
50 | 0 | 0 | |
|
Montessori del Mar Learning Center Fort Bragg · Mendocino County |
50 | 1 | 1 | |
|
Moravia Wines Fresno County |
50 | 0 | 0 | |
|
Mount Madonna Center Santa Cruz County |
50 | 1 | 0 | |
|
Mountain House School Alameda County |
50 | 0 | 0 | |
|
Mountain Valley Child and Family Service Nevada County |
50 | 0 | 0 | |
|
Mumm of Napa Valley Napa County |
50 | 0 | 0 | |
|
Napa Valley Marina Napa County |
50 | 1 | 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.