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 |
|---|---|---|---|---|
| Northwest Prep Charter School | Santa Rosa, CA | 325 | 5 | - |
| Berrendos School | Red Bluff, CA | 325 | 11 | - |
| Mjusd Foothill Intermediate School | Marysville, CA | 325 | 9 | - |
| Fiero Lane Water Company, Inc. | San Luis Obispo, CA | 324 | 3 | - |
| Jgw RV Park | Redding, CA | 324 | 0 | - |
| Sierra Water Resources - Sierra City | Claremont, CA | 324 | 105 | - |
| Anza RV Resort | Escondido, CA | 323 | 10 | - |
| Seven Oaks Mt Resort MHP | Angelus Oaks, CA | 323 | 7 | - |
| Del Oro Grandview Gardens District | Chico, CA | 323 | 107 | - |
| Siete Robles Mutual Water Co | Ojai, CA | 323 | 28 | - |
| Pomona Ranch Housing Center | Madera, CA | 322 | 12 | - |
| Martis Creek-US Army Corps of Engineers | Smartsville, CA | 322 | 2 | - |
| Camp Mendocino | San Francisco, CA | 321 | 18 | - |
| Rockford School | Porterville, CA | 321 | 24 | - |
| Palmer Creek Csd | Fortuna, CA | 320 | 14 | - |
| Mountain View Trailer Court | Los Angeles, CA | 320 | 7 | - |
| Bethel in the Hills - Pcg Camp | Frazier Park, CA | 320 | 17 | - |
| Saputo Dairy Foods USA, LLC | Gustine, CA | 320 | 0 | - |
| Adesa of Sacramento | Sacramento, CA | 320 | 8 | - |
| Double L Mobile Estates | Lockeford, CA | 320 | 8 | - |
| Santos Ranch PWS #5-CSA #35 | Stockton, CA | 320 | 1 | - |
| Saint Marie Mobile Home Park | Irvine, CA | 320 | 29 | - |
| Shepherd of the Valley | Santa Ynez, CA | 320 | 12 | - |
| Blossom Trail Cafe | Sanger, CA | 318 | 18 | - |
| Four Jeffrey Campground | Bishop, CA | 318 | 1 | - |
| El Dorado Mobile Home Park | Laguna Hills, CA | 318 | 5 | - |
| Trail in RV Campground | Redding, CA | 318 | 4 | - |
| Spaulding Eagle Lake MWC | Susanville, CA | 317 | 8 | - |
| Live Oak Springs Water System | Spring Valley, CA | 317 | 39 | - |
| Twin Valley Inc | Castroville, CA | 317 | 129 | - |
| Trinity Lake Marinas, LLC. | Trinity Center, CA | 317 | 8 | - |
| Dixieland Elementary School | Madera, CA | 316 | 16 | - |
| Nps Prns - Laguna System | Point Reyes Station, CA | 316 | 10 | - |
| Amezcua - Garcia Water | Thermal, CA | 316 | 41 | - |
| Cascade Estates | Larkspur, CA | 316 | 24 | - |
| San Lucas County Water District | San Lucas, CA | 315 | 77 | - |
| Shady Creek Outdoor School | Nevada City, CA | 315 | 91 | - |
| Mill Creek Msc | Mentone, CA | 315 | 32 | - |
| North Davis Meadows | Woodland, CA | 314 | 31 | - |
| Pg&e Rocky Point Cg | Chico, CA | 312 | 4 | - |
| Crew Wine Company | Zamora, CA | 312 | 12 | - |
| Smud Powerpines Camp | Sacramento, CA | 311 | 8 | - |
| Owens Valley Water Resources, Inc. | Claremont, CA | 311 | 13 | - |
| Hillside Christian Center Water System | Napa, CA | 311 | 0 | - |
| Station House Inn | Nashville, CA | 310 | 15 | - |
| Cache Creek Vineyards | Clearlake Oaks, CA | 310 | 0 | - |
| Toca Madera Winery | Madera, CA | 310 | 17 | - |
| Csp - Samuel Taylor St Park | Petaluma, CA | 310 | 3 | - |
| Pine Mountain Mutual Water Co. | Willits, CA | 310 | 19 | - |
| Lower Rock Creek Mutual Water Co. | Bishop, CA | 310 | 42 | - |