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 |
| Jacobs Terminous Market | Lodi, CA | 25 | 2 | - |
| Jensen Precast | Sparks, CA | 25 | 10 | - |
| Ripon VFW Post 1051 Water System | Ripon, CA | 25 | 2 | - |
| Park Green Houses Water System | Ripon, CA | 25 | 8 | - |
| Delrio Market & Deli | French Camp, CA | 25 | 2 | - |
| Investors of King Island Water Sys | Campbell, CA | 25 | 8 | - |
| Diede Trucking Water System | Woodbridge, CA | 25 | 6 | - |
| Tracy Matrl Recvry/Sld Waste WS | Tracy, CA | 25 | 44 | - |
| Moose Outdoor Sportsman Club | Acampo, CA | 25 | 2 | - |
| Abf Freight Water System | Fort Smith, CA | 25 | 20 | - |
| Pnp Stockton #80 | Rancho Cordova, CA | 25 | 30 | - |
| Oasis Market & Produce | Manteca, CA | 25 | 10 | - |
| Westgate Landing Park Water System | Lod, CA | 25 | 11 | - |
| Viaggio Winery Water System | Acampo, CA | 25 | 6 | - |
| A Sambado & Son 39-321 | Linden, CA | 25 | 4 | - |
| Schulte Road Warehouse 3, LLC Wtr Sys | San Francisco, CA | 25 | 14 | - |
| West 11th Street Chevron Water System | Tracy, CA | 25 | 0 | - |
| Van Groningen & Sons Inc Water System | Manteca, CA | 25 | 0 | - |
| Tracy Islamic Center Water System | Tracy, CA | 25 | 0 | - |
| California Islamic Center | Lodi, CA | 25 | 0 | - |
| Ripon Church of Christ | Ripon, CA | 25 | 0 | - |
| Creston Country Store | Creston, CA | 25 | 8 | - |
| Precision Mutual Water Company | Arroyo Grande, CA | 25 | 12 | - |
| Cuyama Lane Water Company | Santa Maria, CA | 25 | 15 | - |
| Babe Ruth's Oak View | Bradly, CA | 25 | 11 | - |
| Paso Robles Chevrolet Cadillac | Paso Robles, CA | 25 | 2 | - |
| Harmony Water Works | San Luis Obispo, CA | 25 | 0 | - |
| San Paso Truck Stop | Paso Robles, CA | 25 | 5 | - |
| Sunset Drive-in Snack Bar | San Luis Obispo, CA | 25 | 4 | - |
| Loading Chute | Creston, CA | 25 | 23 | - |
| 141 Suburban Road Water Supply | San Luis Obispo, CA | 25 | 2 | - |
| Halfway Station | Atascadero, CA | 25 | 9 | - |
| Tmc Suburban, LLC | San Luis Obispo, CA | 25 | 4 | - |
| Congregation Beth David | San Luis Obispo, CA | 25 | 0 | - |
| Niner Wine Estates, LLC | San Luis Obispo, CA | 25 | 4 | - |
| Edna Valley Vineyards | San Luis Obispo, CA | 25 | 2 | - |
| Aronhill Vineyard | Templeton, CA | 25 | 0 | - |
| Inn at Opolo Kitchen, The | Westlake Village, CA | 25 | 2 | - |
| Independence Water System | San Luis Obispo, CA | 25 | 0 | - |
| Sixmilebridge Winery | Paso Robles, CA | 25 | 0 | - |
| Ada's Lodges | Paso Robles, CA | 25 | 4 | - |
| Circle Bar B Guest Ranch | Goleta, CA | 25 | 8 | - |
| Fremont/Santa Ynez Improvement Assoc. | Santa Barbara, CA | 25 | 13 | - |
| Moreton Bay Professional Plaza | Goleta, CA | 25 | 253 | - |
| Gaviota Oil Heating Facility | Goleta, CA | 25 | 6 | - |
| Santa Ynez Roblar Mobile Home Park | La Canada, CA | 25 | 17 | - |
| Marborg Industries | Santa Maria, CA | 25 | 15 | - |
| Melville Winery | Lompoc, CA | 25 | 10 | - |
| Sanford Winery | Lompoc, CA | 25 | 3 | - |
| Cotton Wood Winery | Santa Mara, CA | 25 | 16 | - |