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 |
|---|---|---|---|---|
| Moaning Cavern | Vallecito, CA | 215 | 8 | - |
| El Rancho Mobile Home Park | Tustin, CA | 215 | 1 | - |
| Holman Ranch WS | Carmel Valley, CA | 215 | 0 | - |
| Skippers Cove | Smartville, CA | 215 | 26 | - |
| Caspers Regional Wilderness Park | Orange, CA | 215 | 6 | - |
| Grizzly Lake Csd-Crocker/Welch | Portola, CA | 215 | 55 | - |
| Barstow Calico KOA | Yermo, CA | 215 | 10 | - |
| Alpine View Campground | Redding, CA | 215 | 0 | - |
| Del Norte Mutual Water Co. | Ventura, CA | 215 | 32 | - |
| Paradise Lake Mutual Water Co. | Salinas, CA | 213 | 26 | - |
| Ridge Mutual Water Company | Los Gatos, CA | 213 | 11 | - |
| Gizdich Home Ranch | Watsonville, CA | 213 | 6 | - |
| Elk Creek Community S.D. | Elk Creek, CA | 212 | 24 | - |
| Camp St Nicholas Water System | Los Angeles, CA | 212 | 9 | - |
| Mandala Water System | San Rafael, CA | 212 | 18 | - |
| Walker Creek Ranch Educational Center | Petaluma, CA | 212 | 21 | - |
| Olivet University | Anza, CA | 212 | 14 | - |
| Hari's Market | Porterville, CA | 212 | 5 | - |
| Canyon Creek Resort | Winters, CA | 212 | 6 | - |
| Spv Water Company | Valencia, CA | 211 | 0 | - |
| Alview School | Chowchilla, CA | 211 | 25 | - |
| Oak Trail Estates | Santa Ynez, CA | 211 | 5 | - |
| Shasta Caverns | Lakehead, CA | 211 | 4 | - |
| Camino Mobilehome | Oakley, CA | 210 | 16 | - |
| Alvina School | Caruthers, CA | 210 | 9 | - |
| Westgate Petroleum | Lakeport, CA | 210 | 4 | - |
| Saint Andrews Abbey | Valyermo, CA | 210 | 29 | - |
| Moro RD WS #09 | Salinas, CA | 210 | 298 | - |
| Cherry Valley Water Company | Cherry Valley, CA | 210 | 86 | - |
| Rancho Carrillo MWC | Rancho Mission Viejo, CA | 210 | 79 | - |
| River's Edge Marina & Resort | Isleton, CA | 210 | 36 | - |
| Wilton Bible Church | Wilton, CA | 210 | 6 | - |
| Ironwood Camp | Newberry Springs, CA | 210 | 138 | - |
| New Jerusalem School | Tracy, CA | 210 | 8 | - |
| Metcalf Motorcycle County Park | San Jose, CA | 210 | 4 | - |
| Calero County Park | San Jose, CA | 210 | 0 | - |
| Mobile Home Estates | Santa Rosa, CA | 210 | 83 | - |
| Nps-Potwisha | Three Rivers, CA | 210 | 0 | - |
| Mother Lode Mobile Estates | Sonora, CA | 210 | 21 | - |
| Atlas Business Park | Sonora, CA | 210 | 29 | - |
| Big Sur Campground WS | Big Sur, CA | 209 | 17 | - |
| Wolf Lakes Park | Sanger, CA | 208 | 50 | - |
| Union Pacific Railroad Co.-Keene Water | Denver, CA | 208 | 45 | - |
| Saratoga Springs Retreat Center | Upper Lake, CA | 208 | 8 | - |
| Capell Valley Estates | Stockton, CA | 208 | 58 | - |
| Tucalota Springs R.V. Park | Hemet, CA | 208 | 16 | - |
| Camp Loma Mar | Oakland, CA | 208 | 69 | - |
| Usfs Hirz Bay/Dekkas/Moore Cr | Redding, CA | 208 | 2 | - |
| Rains Creek Water District | Cloverdale, CA | 208 | 7 | - |
| James Court Water System | Santa Rosa, CA | 208 | 1 | - |