All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lake Alpine Improvement Association Alpine County |
25 | 0 | 0 | |
|
Lakeview Inn and Eagle Lake Bar & Grill Lassen County |
25 | 0 | 0 | |
|
Lassen RV Park & Campground Lassen County |
25 | 0 | 0 | |
|
Laurel Pines Camp San Bernardino County |
25 | 0 | 0 | |
|
Leavitt Lake Market Lassen County |
25 | 0 | 0 | |
|
Liana Estate Napa County |
25 | 1 | 0 | |
|
Likely Place Golf and RV Resort Modoc County |
25 | 0 | 0 | |
|
Loading Chute San Luis Obispo County |
25 | 1 | 0 | |
|
Lockeford Holdings Water District LLC San Joaquin County |
25 | 0 | 0 | |
|
Lodgepole Campground Placer County |
25 | 0 | 0 | |
|
Los Indios Water System Stanislaus County |
25 | 0 | 0 | |
|
Lovelace Transfer Station San Joaquin County |
25 | 0 | 0 | |
|
Lower Sac Plaza San Joaquin County |
25 | 0 | 0 | |
|
Marin Food Specialties Contra Costa County |
25 | 0 | 0 | |
|
Mazzocco Winery Sonoma County |
25 | 0 | 0 | |
|
McHenry Ave Recreation Area San Joaquin County |
25 | 0 | 0 | |
|
McLean Water System Madera County |
25 | 0 | 0 | |
|
McPr-Hornitos Co. Park Mariposa County |
25 | 0 | 0 | |
|
McPr-Red Cloud Park Mariposa County |
25 | 0 | 0 | |
|
Meadowcliff Lodge & Coleville/walker KOA Mono County |
25 | 0 | 0 | |
|
Melville Winery Santa Barbara County |
25 | 0 | 0 | |
|
Mendocino Bungalows Mendocino County |
25 | 0 | 0 | |
|
Mendocino Inn and Farm C Mendocino County |
25 | 0 | 0 | |
|
Michelsen Packaging Fresno County |
25 | 0 | 0 | |
|
Mill Creek Vineyards Sonoma County |
25 | 0 | 0 | |
|
Modesto Christian Center (watersystem) Stanislaus County |
25 | 0 | 0 | |
|
Modesto Reservoir Stanislaus County |
25 | 0 | 0 | |
|
Mono Inn Mono County |
25 | 0 | 0 | |
|
Mono Lake County Park Mono County |
25 | 0 | 0 | |
|
Moose Outdoor Sportsman Club San Joaquin County |
25 | 0 | 0 | |
|
Morgan Oaks Eternal Preserve Placer County |
25 | 0 | 0 | |
|
Mountain Aire Mutual Water Company Tulare County |
25 | 0 | 0 | |
|
Mountain House Bar Alameda County |
25 | 0 | 0 | |
|
Mountain View Barbeque Mono County |
25 | 0 | 0 | |
|
Mountain View Chatom Recreation Stanislaus County |
25 | 0 | 0 | |
|
Newberry Mountain RV & Motel San Bernardino County |
25 | 0 | 0 | |
|
Nine Suns Winery St. Helena · Napa County |
25 | 0 | 0 | |
|
Niner Wine Estates, LLC San Luis Obispo County |
25 | 0 | 0 | |
|
Nino's Place Water System Stanislaus County |
25 | 0 | 0 | |
|
Nipton Water and Power San Bernardino County |
25 | 0 | 0 | |
|
Oak Knoll Professional Ctr Fresno County |
25 | 0 | 0 | |
|
Oak Knoll Work Center Siskiyou County |
25 | 0 | 0 | |
|
Oakdale Golf & Country Club (eh) Stanislaus County |
25 | 0 | 0 | |
|
Oakoasis Open Space Preserve San Diego County |
25 | 1 | 0 | |
|
Oasis Market Stanislaus County |
25 | 1 | 0 | |
|
Oasis Market & Produce San Joaquin County |
25 | 0 | 0 | |
|
Ocotillo Wells Holmes Camp San Diego County |
25 | 0 | 0 | |
|
Odette Estate Water System Napa County |
25 | 0 | 0 | |
|
Offstreet Studios Mendocino County |
25 | 0 | 0 | |
|
OK Corral Amador County |
25 | 2 | 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.