All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lakehead Gas & Food Shasta County |
100 | 0 | 0 | |
|
Lassen Vnp Drakesbad Tehama County |
100 | 0 | 0 | |
|
LE Chene Restaurant Water System Los Angeles County |
100 | 0 | 0 | |
|
Linden Usd-Glenwood School San Joaquin County |
100 | 0 | 0 | |
|
Little Bear RV Park Plumas County |
100 | 0 | 0 | |
|
Live Oak Campground Santa Barbara County |
100 | 0 | 0 | |
|
Lnf-Bogard Work Center/cal Trans Srra Lassen County |
100 | 0 | 0 | |
|
Loch Leven Christian Camp & Conference C San Bernardino County |
100 | 1 | 0 | |
|
Lodge at Blue Lakes Lake County |
100 | 0 | 0 | |
|
Lopez Recreation Area San Luis Obispo County |
100 | 0 | 0 | |
|
Lou's Drive-In No.2 Sacramento County |
100 | 0 | 0 | |
|
Lynmar Winery Sonoma County |
100 | 0 | 0 | |
|
Lytle Creek Administration Site San Bernardino County |
100 | 5 | 3 | |
|
Marko Zaninovich, Inc. Pond Road Kern County |
100 | 0 | 0 | |
|
Maywood Farms Tehama County |
100 | 0 | 0 | |
|
McManis Family Vineyards Inc. San Joaquin County |
100 | 0 | 0 | |
|
MD 42 Still Meadow Madera County |
100 | 2 | 0 | |
|
MD 43 Miami Creek Knolls Madera County |
100 | 0 | 0 | |
|
Meadow Estates Mutual Mendocino County |
100 | 0 | 0 | |
|
Mendocino Cove Mendocino County |
100 | 0 | 0 | |
|
Meridian Elementary School Sutter County |
100 | 0 | 0 | |
|
Midgley's Country Flea Market Sonoma County |
100 | 0 | 0 | |
|
Midland School Santa Barbara County |
100 | 0 | 0 | |
|
Midway Foods Solano County |
100 | 0 | 0 | |
|
Mission School WS Monterey County |
100 | 0 | 0 | |
|
Molino Corner Water System Sonoma County |
100 | 0 | 0 | |
|
Mont St. John Cellars Napa County |
100 | 0 | 0 | |
|
Montecito Sea Meadows Santa Barbara County |
100 | 1 | 1 | |
|
Morada Produce San Joaquin County |
100 | 0 | 0 | |
|
Morning Star Outreach Calaveras County |
100 | 0 | 0 | |
|
MT Aukum Square El Dorado County |
100 | 1 | 0 | |
|
Manchester Rancheria County |
100 | 0 | 0 | |
|
Napa County Schools: Pope Valley Napa County |
100 | 0 | 0 | |
|
New Melones Lake Marina Calaveras County |
100 | 0 | 0 | |
|
Newberry Chevron San Bernardino County |
100 | 0 | 0 | |
|
Newberry Community Services San Bernardino County |
100 | 0 | 0 | |
|
Nickel Beer Water Company San Diego · San Diego County |
100 | 0 | 0 | |
|
Noll Properties San Luis Obispo County |
100 | 0 | 0 | |
|
Norcal Gasoline Fort Bragg · Mendocino County |
100 | 0 | 0 | |
|
North Shore CG Plumas County |
100 | 0 | 0 | |
|
North Trails Mutual Water Company Los Angeles County |
100 | 3 | 1 | |
|
North Yuba Little League Yuba County |
100 | 0 | 0 | |
|
O.a.r.s., INC #70 El Dorado County |
100 | 0 | 0 | |
|
Oakmoore Congre of Jehovah Wit San Joaquin County |
100 | 0 | 0 | |
|
Oasis Marina-Resort San Joaquin County |
100 | 0 | 0 | |
|
Oasis Property Owners Association Kern County |
100 | 1 | 1 | |
|
Ocean Cove Lodge Bar & Grill Sonoma County |
100 | 0 | 0 | |
|
Omya California, a Division of Omya INC San Bernardino County |
100 | 2 | 1 | |
|
Opus One Winery Napa County |
100 | 0 | 0 | |
|
Orange Belt Cafe Tulare County |
100 | 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.