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 |
|---|---|---|---|---|
| Wasuma School | Oakhurst, CA | 354 | 52 | - |
| Peninsula Recreation Area | Hollister, CA | 353 | 47 | - |
| Butterfield Ranch | San Diego, CA | 353 | 56 | - |
| Sunrise Village MHP | Scottsdale, CA | 353 | 15 | - |
| Fillmore Irrigation Co | Fillmore, CA | 353 | 16 | - |
| Great Western Elementary School | Reedley, CA | 352 | 8 | - |
| Cdpr-Hatfield | Columbia, CA | 352 | 18 | - |
| Fisherman's Retreat | Redlands, CA | 352 | 30 | - |
| Sierra Nevada Brewing Co. | Chico, CA | 350 | 2 | - |
| Knightsen Elementary School | Knightsen, CA | 350 | 38 | - |
| Orwood Resort | Brentwood, CA | 350 | 11 | - |
| Usfs/Billy Creek Campground | Clovis, CA | 350 | 13 | - |
| Green Acres Mobile Home Estate | Sacramento, CA | 350 | 11 | - |
| Sunset West Community LLC | Seaside, CA | 350 | 9 | - |
| Fcsa 44D - Monte Verdi | Fresno, CA | 350 | 7 | - |
| Hidden Springs Cg-State Parks | Eureka, CA | 350 | 0 | - |
| Bear Mountain RV Park Water System | Elk Grove, CA | 350 | 15 | - |
| Hanford First Baptist Church | Hanford, CA | 350 | 0 | - |
| Caltrans-Honey Lake Srra | Redding, CA | 350 | 10 | - |
| MD 37 la Vina | Madera, CA | 350 | 23 | - |
| Turlock Golf & Country Club | Turlock, CA | 350 | 26 | - |
| Anderson Valley Elementary School | Boonville, CA | 350 | 16 | - |
| Caltrans-Massack Rest Stop | Redding, CA | 350 | 6 | - |
| CSA 51 | Desert Center, CA | 350 | 5 | - |
| Dillard Elementary School | Sacramento, CA | 350 | 18 | - |
| Sac City Mobile Home Community LP | Sacramento, CA | 350 | 5 | - |
| Tres Pinos Cwd | Tres Pinos, CA | 350 | 34 | - |
| George Chiala Farms, Inc.. | Morgan Hill, CA | 350 | 3 | - |
| Olive Dell Ranch | Colton, CA | 350 | 21 | - |
| Black Meadow Landing | Parker Dam, CA | 350 | 30 | - |
| Oak View Union Elementary Sch | Acampo, CA | 350 | 23 | - |
| Green River Mutual Water Co. | Paso Robles, CA | 350 | 19 | - |
| Davenport County Sanitation | Santa Cruz, CA | 350 | 27 | - |
| Union Hotel | Occidental, CA | 350 | 7 | - |
| Wildewood East Mutual | Yuba City, CA | 350 | 11 | - |
| Lassen View Union Elementary School Dist | Los Molinos, CA | 350 | 7 | - |
| Sierra Pacific Industries - Richfield | Corning, CA | 350 | 1 | - |
| Sierra Pacific Industries - Windows | Red Bluff, CA | 350 | 0 | - |
| Yettem Water System | Visalia, CA | 350 | 20 | - |
| Nps-Buckeye Flat | Three Rivers, CA | 350 | 6 | - |
| Collins Lake | Oregon House, CA | 350 | 2 | - |
| Musco Family Olive Co | Tracy, CA | 348 | 5 | - |
| Usfs Fraser Flat Campgd | Pinecrest, CA | 348 | 10 | - |
| Three Palms Mobilehome Park | Sacramento, CA | 347 | 31 | - |
| Chemeketa Park Mutual Water Company | Santa Clara, CA | 346 | 67 | - |
| Dixon Migrant Center | Woodland, CA | 346 | 2 | - |
| Shaver Lake Heights Water Assn | Prather, CA | 345 | 17 | - |
| Big Bend Campground | Bishop, CA | 345 | 16 | - |
| Cal Am - Raymond | Sacramento, CA | 343 | 197 | - |
| Navelencia School | Reedley, CA | 342 | 2 | - |