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 |
|---|---|---|---|---|
| Tomales Elem & Middle School | Tomales, CA | 225 | 6 | - |
| Linden Usd-Waterloo Elementary | Ripon, CA | 225 | 21 | - |
| Liberty School | Petaluma, CA | 225 | 7 | - |
| Benziger Family Winery | Glen Ellen, CA | 225 | 2 | - |
| Three Rivers Village | Santa Barbara, CA | 225 | 35 | - |
| Tamarron Mobile Home Park | Newport Beach, CA | 225 | 17 | - |
| Classic Yam Water System | Livingston, CA | 224 | 10 | - |
| Anza Mutual Water Company | Anza, CA | 224 | 52 | - |
| Lucerne Vista MWC | Lucerne Valley, CA | 224 | 11 | - |
| Cypress Mutual Water Co Inc | Oxnard, CA | 224 | 19 | - |
| Sciots Tract Water System | Sacramento, CA | 223 | 28 | - |
| Mountain Summit Mutual Water System | Los Gatos, CA | 223 | 16 | - |
| Lakeshore Villa Center | Rancho Cordova, CA | 223 | 9 | - |
| Pine Cove RV Park | Camas, CA | 223 | 16 | - |
| Camp Wawona | Wawona, CA | 222 | 4 | - |
| Ananda Village | Nevada City, CA | 222 | 18 | - |
| Francis Coppola Winery | Manteca, CA | 222 | 10 | - |
| Rmrc-Goldledge Campground | Overland Park, CA | 222 | 0 | - |
| Drytown County Water District | Ione, CA | 221 | 13 | - |
| Qvwd-West & East Combined Water System | Tehachapi, CA | 221 | 49 | - |
| Richmond Elementary School | Susanville, CA | 221 | 10 | - |
| Magic Mountain Mutual Water Company | Santa Barbara, CA | 221 | 39 | - |
| North Star Mobile Home Park | Santa Rosa, CA | 221 | 27 | - |
| Dingerville USA Park | Yorba Linda, CA | 220 | 13 | - |
| Panoche Water District | Firebaugh, CA | 220 | 124 | - |
| The Peg House | Leggett, CA | 220 | 0 | - |
| El Nido Elementary School | El Nido, CA | 220 | 6 | - |
| Ripplewood Resort WS | Big Sur, CA | 220 | 10 | - |
| Lower Bucks Lake Lds Camp | Reno, CA | 220 | 0 | - |
| The Oaks Venture, LLC | San Diego, CA | 220 | 9 | - |
| Zinc House Farm Winery | Escalon, CA | 220 | 0 | - |
| Happy Acres MWC | Gilroy, CA | 220 | 21 | - |
| E Headstart | Yuba City, CA | 220 | 7 | - |
| Waukena Elementary School | Tulare, CA | 220 | 252 | - |
| Pleasant View West School | Porterville, CA | 220 | 27 | - |
| Columbine School | Delano, CA | 220 | 10 | - |
| Lactalis Heritage Dairy | Tulare, CA | 220 | 26 | - |
| Los Gatos Tomato Products | Huron, CA | 219 | 110 | - |
| Fc Tracy Holdings, LLC | Tracy, CA | 219 | 0 | - |
| Sugar Pine RV Resort | Twain Harte, CA | 219 | 8 | - |
| Armenian Church Camp | Pasadena, CA | 218 | 8 | - |
| Panamint Springs Resort | Ridgecrest, CA | 218 | 8 | - |
| Merced River Resort | Sanger, CA | 218 | 8 | - |
| Lawndale Mutual Water Company | Kenwood, CA | 218 | 16 | - |
| Paradise School | Modesto, CA | 218 | 10 | - |
| Pine Union School | Holtville, CA | 217 | 28 | - |
| Old Oak Ranch | Sonora, CA | 217 | 26 | - |
| Coleville High School | Bridgeport, CA | 216 | 22 | - |
| Pond-Derosa Oaks WC | Santa Cruz, CA | 216 | 19 | - |
| Coyote Lake County Park | San Jose, CA | 216 | 28 | - |