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 |
|---|---|---|---|---|
| Pinon Pines MWC | Frazier Park, CA | 908 | 63 | - |
| Kings River Hardwick School | Hanford, CA | 908 | 5 | - |
| Usfs/Rancheria Campground | Clovis, CA | 906 | 13 | - |
| Scotia Csd | Scotia, CA | 906 | 14 | - |
| Del Oro Water Co.-Johnson Park | Chico, CA | 904 | 25 | - |
| Valley Springs PUD | Valley Springs, CA | 900 | 10 | - |
| Usfs/Dorabelle Campground | Clovis, CA | 900 | 14 | - |
| Casa Loma Water Co, Inc. | Bakersfield, CA | 900 | 40 | - |
| Frito-Lay, Inc. Water System | Bakersfield, CA | 900 | 5 | - |
| Bud Antle, LLC-Soledad Facility WS | Monterey, CA | 900 | 32 | - |
| Fern Valley WD | Idyllwild, CA | 900 | 22 | - |
| Windset Farms Greenhouses | Santa Maria, CA | 900 | 12 | - |
| Nps-Dorst Cg | Three Rivers, CA | 900 | 6 | - |
| Rotten Robbie | Santa Clara, CA | 899 | 4 | - |
| Rancho Pauma Mutual WC | Pauma Valley, CA | 899 | 26 | - |
| Csp Henry W. Coe State Park | San Juan Bautista, CA | 898 | 14 | - |
| Lakeside School | Bakersfield, CA | 897 | 60 | - |
| Plantation on the Lake Park | Calimesa, CA | 897 | 15 | - |
| Del Oro Water Co.-Lime Saddle Marina | Chico, CA | 895 | 2 | - |
| Joshua Tree Np - Cottonwood Springs | Twentynine Palms, CA | 895 | 16 | - |
| South Midway City Mutual Water Co. | Huntington Beach, CA | 891 | 12 | - |
| Dorris, City Of | Dorris, CA | 887 | 13 | - |
| Hillsview Homes | Modesto, CA | 887 | 25 | - |
| Jalama Beach Park | Santa Maria, CA | 882 | 10 | - |
| Psmcsd - Sunny Mesa | Royal Oaks, CA | 880 | 19 | - |
| Inyokern Csd | Inyokern, CA | 878 | 59 | - |
| California Water Service Co-Leona Valley | San Jose, CA | 878 | 1 | - |
| Church of Glad Tidings | Yuba City, CA | 878 | 19 | - |
| Rivernook Campground | Kernville, CA | 877 | 19 | - |
| Madison Service Dist | Madison, CA | 876 | 53 | - |
| Alpaugh Community Services District | Alpaugh, CA | 871 | 158 | - |
| Descanso Community Water District | Sacramento, CA | 870 | 35 | - |
| Usfs- Tillie Creek Live Oaks Campgrounds | Overland Park, CA | 865 | 12 | - |
| California Pines C.s.d. | Alturas, CA | 862 | 15 | - |
| Liberty -Yermo | Downey, CA | 861 | 107 | - |
| Mesa Elementary School | Riverbank, CA | 860 | 0 | - |
| Juniper Riviera Cwd | Apple Valley, CA | 858 | 29 | - |
| Tulelake, City Of | Tulelake, CA | 856 | 8 | - |
| Refugio State Beach | Ventura, CA | 855 | 2 | - |
| Forks Resort | Bass Lake, CA | 853 | 10 | - |
| McKinney Water District | Folsom, CA | 853 | 3 | - |
| San Joaquin County - Wilkinson Manor | Stockton, CA | 851 | 8 | - |
| Sierra Cedars Csd | Shaver Lake, CA | 850 | 27 | - |
| William Heise County Park | San Diego, CA | 850 | 8 | - |
| West Valley High School | Cottonwood, CA | 850 | 9 | - |
| Victory Mutual Water Company | Bakersfield, CA | 849 | 23 | - |
| Deer Lodge Water System | Lake Arrowhead Ca 92352, CA | 845 | 4 | - |
| Los Prietos Complex | Solvang, CA | 845 | 13 | - |
| Tahoe City PUD - McKinney/Quail | Tahoe City, CA | 844 | 2 | - |
| First Mace Meadow # 1 | Pine Grove, CA | 838 | 19 | - |