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 |
|---|---|---|---|---|
| Wilsona Gardens Mutual | Lancaster, CA | 129 | 22 | - |
| Trillium Cafe and Inn | Mendocino, CA | 129 | 0 | - |
| Coastlands Mws (Post Creek) | Big Sur, CA | 129 | 23 | - |
| Valley Creek MHP WS | Carmel, CA | 129 | 164 | - |
| Maverik Fueling Station | Desert Hot Springs, CA | 129 | 0 | - |
| Rancho Ynecita | Los Olivos, CA | 129 | 5 | - |
| Greene Acres Prop. O.a. | Loomis, CA | 129 | 33 | - |
| End-O-Valley Mutual Water Company | Santa Rosa, CA | 129 | 17 | - |
| Kings Inn Motel | Glendora, CA | 129 | 141 | - |
| Sierra Twain Harte MHP | Jamestown, CA | 129 | 13 | - |
| Camp El Camino Pines | Yucaipa, CA | 128 | 6 | - |
| Milat Winery | St. Helena, CA | 128 | 5 | - |
| Ledson Winery and Vineyards | Kenwood, CA | 128 | 2 | - |
| Encinal Elementary School | Live Oak, CA | 128 | 43 | - |
| California Vipassana Center | North Fork, CA | 127 | 40 | - |
| Topaz Lake RV Park | Topaz, CA | 127 | 27 | - |
| Diamond Jack's RV Ranch | Jamul, CA | 127 | 18 | - |
| Lakeside SD-Lakeside School | Los Gatos, CA | 127 | 10 | - |
| Duncans Mills Camping Club | Duncans Mills, CA | 127 | 9 | - |
| Bear River Summer Home Tract | Jackson, CA | 126 | 3 | - |
| Arbuckle Golf Club | Arbuckle, CA | 126 | 0 | - |
| Riverview Mobile Home Park | Sacramento, CA | 126 | 11 | - |
| Ancient Redwoods Resort | Redcrest, CA | 126 | 4 | - |
| Brookside Mobile Home Park | Simi Valley, CA | 126 | 4 | - |
| Upper Sage Flat Campground | Bishop, CA | 126 | 4 | - |
| Burris Park | Hanford, CA | 126 | 8 | - |
| Assisi MWC | Salinas, CA | 126 | 56 | - |
| Camphora Apartments | Hayward, CA | 126 | 9 | - |
| Princes Camp Resort WS | Salinas, CA | 126 | 62 | - |
| Bar-Len MWC | Barstow, CA | 126 | 67 | Clean |
| Aeronautical Systems | Palmdale, CA | 126 | 4 | - |
| Empire Landing Campground-Sundance RV | Earp, CA | 126 | 3 | - |
| Callender Grove Mutual Water | San Luis Obispo, CA | 126 | 2 | - |
| Crestwood Heights Water Assn | Watsonville, CA | 126 | 9 | - |
| Shadow Mountain MHP | San Juan Capistrano, CA | 126 | 11 | - |
| Fircrest Mutual Water Company | Sebastopol, CA | 126 | 11 | - |
| Park Investments Water System | Three Rivers, CA | 126 | 25 | - |
| California Odd Fellow-Rebekah | MI Wuk Village, CA | 126 | 24 | - |
| Firefall Ranch Water System | Sonora, CA | 126 | 4 | - |
| Grace Fellowship Church | Jackson, CA | 125 | 14 | - |
| Bear River Group Campground | Hollister, CA | 125 | 18 | - |
| Forest Ranch Charter School | Chico, CA | 125 | 12 | - |
| River Reflections RV & Campground | Oroville, CA | 125 | 19 | - |
| Camp Nauvoo Water System | Placerville, CA | 125 | 7 | - |
| Mountain Creek School | Somerset, CA | 125 | 28 | - |
| Gerle Creek Campground | Hollister, CA | 125 | 27 | - |
| Loon Lake Campground | Hollister, CA | 125 | 20 | - |
| Bear Mountain Library/Act Cntr | Squaw Valley, CA | 125 | 20 | - |
| Quail Lake Community Church | Clovis, CA | 125 | 6 | - |
| Moonstone Beach Trinidad | Trinidad, CA | 125 | 12 | - |