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 |
|---|---|---|---|---|
| Reiter Berry Water System | Watsonville, CA | 96 | 21 | - |
| Ocotillo Oasis, LLC | San Marcos, CA | 96 | 123 | - |
| California Citrus Association | Exeter, CA | 96 | 123 | - |
| Jeff Runquist Winery | Plymouth, CA | 95 | 0 | - |
| Adam's Vegetable Oils | Arbuckle, CA | 95 | 10 | - |
| Larry a Shehadey Dairy | Fresno, CA | 95 | 6 | - |
| Little River Inn | Little River, CA | 95 | 28 | - |
| Minturn Huller | Chowchilla, CA | 95 | 4 | - |
| Summerhill MHP WS | Santa Cruz, CA | 95 | 14 | - |
| Captain Cooper School WS | Carmel, CA | 95 | 13 | - |
| Z D Wines | Napa, CA | 95 | 3 | - |
| Butano State Park - Csp | Felton, CA | 95 | 10 | - |
| Montgomery Creek School | Montgomery Creek, CA | 95 | 32 | - |
| Tucker Oaks East Water District | Anderson, CA | 95 | 10 | - |
| Tnf-Indian Valley/Rocky Rest Cg | Nevada City, CA | 95 | 3 | - |
| Tnf-Chapman Cg | Nevada City, CA | 95 | 9 | - |
| Big Springs Union Elem. School | Montague, CA | 95 | 9 | - |
| Friedman Brothers Hardware | Santa Rosa, CA | 95 | 14 | - |
| Csp Labs & Micro Paradox | Pleasant Grove, CA | 95 | 3 | - |
| Shady Grove Mobile Home Park, LLC | Ventura, CA | 95 | 45 | - |
| Yokohl Mutual Water Co | Visalia, CA | 95 | 28 | - |
| Rmrc-Lower Coffee Camp Day Use | Overland Park, CA | 95 | 2 | - |
| Milk Specialties Global | Visalia, CA | 95 | 7 | - |
| Cdf - Owens Valley Conservation Camp | Bishop, CA | 94 | 11 | - |
| Mayflower Park | Blythe, CA | 94 | 28 | - |
| Rancho del Paradiso-Cal Water Svc (Puc) | San Jose, CA | 94 | 4 | - |
| Bella Vista Water Sys | Moraga, CA | 93 | 18 | - |
| Redwoods Main Water System | Oakhurst, CA | 93 | 0 | - |
| Lomas del Sol Mws | Aromas, CA | 93 | 38 | - |
| San Miguel WS #22 | Salinas, CA | 93 | 14 | - |
| Michele Mutual Water Company | Fulton, CA | 93 | 21 | - |
| Lytton Springs Winery | Cupertino, CA | 93 | 6 | - |
| Del Oro Water Co - Metropolitan District | Chico, CA | 92 | 21 | - |
| Wonder Acres Water System | California City, CA | 92 | 32 | - |
| Sunnygem Juice Plant | Buttonwillow, CA | 92 | 0 | - |
| Leisure Time RV Park | Sacramento, CA | 92 | 11 | - |
| Oak Manor WS | Salinas, CA | 92 | 72 | - |
| Vista del Toro WS | Corral de Tierra, CA | 92 | 211 | - |
| McCoy RD WS #05 | Salinas, CA | 92 | 113 | - |
| Robley Property Mws | Salinas, CA | 92 | 26 | - |
| Victory Ranch | Moreno Valley, CA | 92 | 11 | - |
| Maurland Manor Water System | Stockton, CA | 92 | 6 | - |
| Cortland Pines Mutual Water Co | Shingletown, CA | 92 | 6 | - |
| Rapid River Mobilehome Park | Moraga, CA | 92 | 14 | - |
| Tud-Peaceful Pines Water System | Sonora, CA | 92 | 3 | - |
| Nishi Quality Flowers, Inc. | Ventura, CA | 92 | 9 | - |
| Ebrpd - Sunol Regional Wilderness | Oakland, CA | 91 | 0 | - |
| The Madrones | Philo, CA | 91 | 0 | - |
| Livingston Properties | Merced, CA | 91 | 14 | - |
| Encinal RD WS #01 | Salinas, CA | 91 | 395 | - |