Public Water Systems
7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Koehler Winery | Los Olivos, CA | 40 | 10 | - |
| Mountain Springs Mutual Water Company | Los Gatos, CA | 40 | 35 | - |
| Chiri Sweet Water Company | San Martin, CA | 40 | 6 | - |
| Cedar Creek Mobilehome Park | Colusa, CA | 40 | 62 | - |
| Pg&e - McCumber Campground | Redding, CA | 40 | 2 | - |
| Anderson Mobile Home Park | Sacramento, CA | 40 | 9 | - |
| Weaver Lumber Water System | Anderson, CA | 40 | 16 | - |
| Tnf-Union Flat Cg | Nevada City, CA | 40 | 3 | - |
| Tnf-Yuba Pass Cg | Nevada City, CA | 40 | 0 | - |
| Junction Elementary School | Yreka, CA | 40 | 35 | - |
| Vaca-Dixon Substation | Santa Rosa, CA | 40 | 2 | - |
| Sonoma County Mutual Water Company | San Francisco, CA | 40 | 208 | - |
| Clear Creek Water Company | Cloverdale, CA | 40 | 17 | - |
| West Water Company (Puc) | Santa Rosa, CA | 40 | 30 | - |
| Mom S Apple Pie | Sebastopol, CA | 40 | 10 | - |
| Gurdjieff Foundation | San Francisco, CA | 40 | 20 | - |
| Overshine Wine Company | Healdsburg, CA | 40 | 18 | - |
| Mauritson Family Winery | Healdsburg, CA | 40 | 4 | - |
| Wohler Springs LLC | CA | 40 | 0 | - |
| Mayacamas Warehouse, LLC | Sonoma, CA | 40 | 2 | - |
| Dutcher Crossing Winery | Onalaska, CA | 40 | 0 | - |
| Truck Tops USA | Santa Rosa, CA | 40 | 0 | - |
| Lakewood Memorial Park & Funeral Home | Hughson, CA | 40 | 11 | - |
| Storer Transportation | Modesto, CA | 40 | 41 | Clean |
| Foster Farms-Ellenwood Hatchery | Livingston, CA | 40 | 11 | - |
| Yuba Apartment Homes | Yuba City, CA | 40 | 14 | - |
| Womack Subdivision M.W.C. | Red Bluff, CA | 40 | 14 | - |
| Red Bluff Fish & Wildlife Office | Red Bluff, CA | 40 | 8 | - |
| Seymour's Mutual Water System | Trinity Center, CA | 40 | 32 | - |
| River Retreat Mutual Water Company | Three Rivers, CA | 40 | 28 | - |
| East Three Rivers Mutual Water Corp | Three Rivers, CA | 40 | 14 | - |
| Camp Wilderness | Providence, CA | 40 | 11 | - |
| Quesadilla Gorilla | Three Rivers, CA | 40 | 0 | - |
| Deloro Valley Water System | Tuolumne, CA | 40 | 14 | - |
| Apple Valley Farms | Sonora, CA | 40 | 2 | - |
| Silt Wine Company | Clarksburg, CA | 40 | 0 | - |
| Rolling Acres Mutual Water Company | Davis, CA | 40 | 48 | - |
| Yolo Co Central Landfill | Woodland, CA | 40 | 5 | - |
| Oregon House Grocery | Marysville, CA | 40 | 0 | - |
| Jande Country Market | Marysville, CA | 40 | 2 | - |
| Heather Lake Road Tract | South Lake Tahoe, CA | 39 | 7 | - |
| Sequoia Bible Fellowship | Squaw Valley, CA | 39 | 14 | - |
| Sjrp Coke Hallowell Center | Fresno, CA | 39 | 9 | - |
| Hudson Ranch Power I LLC | Calipatria, CA | 39 | 3 | - |
| Olancha RV and MHP | Porter Ranch, CA | 39 | 27 | - |
| Heath Brimhall P.O.A. | Bakersfield, CA | 39 | 13 | - |
| 60th Street Assoc. Water System | Rosamond, CA | 39 | 18 | - |
| Colorado Mutual Water Company | Lancaster, CA | 39 | 8 | - |
| Wheeler Farms Winery | St. Helena, CA | 39 | 8 | - |
| Behrens Family Winery | St. Helena, CA | 39 | 10 | - |