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 |
| SOUTH KERN MUTUAL WATER COMPANY | CLOVIS, CA | 32 | 37 | — |
| TUT BROTHERS FARM #96 | WATSONVILLE, CA | 32 | 85 | — |
| MEADOWS OF THE KERN MUTUAL WATER COMPANY | BAKERSFIELD, CA | 32 | 17 | — |
| PRINCE TRUCK STOP WATER SYSTEM | BAKERSFIELD, CA | 32 | 0 | — |
| BLUE LAKES MOBILE HOME PARK | SAN MATEO, CA | 32 | 49 | — |
| LASSEN CO. OFF. OF EDUCATION | SUSANVILLE, CA | 32 | 8 | — |
| QUADY RESIDENCE AND WNERY | MADERA, CA | 32 | 10 | — |
| WHISPERING PINES APARTMENTS | MIDPINES, CA | 32 | 47 | — |
| ORCHARD LN WS #02 | SALINAS, CA | 32 | 19 | — |
| JOSEPH CELLARS WINERY | CALISTOGA, CA | 32 | 20 | — |
| STAGS LEAP WINERY | NAPA, CA | 32 | 19 | — |
| FRCCSD OLD MILL RANCH | TWAIN, CA | 32 | 30 | — |
| STAFFORD MEAT COMPANY | RIO LINDA, CA | 32 | 8 | — |
| PRAIRIE CITY SVRA | FOLSOM, CA | 32 | 1 | — |
| HORIZON LANE WATER SUPPLY | SAN LUIS OBISPO, CA | 32 | 3 | — |
| SAN GREGORIO COMPANY | SAN GREGORIO, CA | 32 | 27 | — |
| APTOS HILLS MUTUAL WATER CO | WATSONVILLE, CA | 32 | 29 | — |
| BURNEY MOUNTAIN GUEST RANCH | CASSEL, CA | 32 | 0 | — |
| OAK BOTTOM CG & WC | ORLEANS, CA | 32 | 0 | — |
| SHASTINA MOBILE ESTATES | ROSEVILLE, CA | 32 | 7 | — |
| EAST AUSTIN CREEK MUTUAL WATER COMPANY | CAZADERO, CA | 32 | 18 | — |
| TURLOCK SPORTSMAN'S CLUB | TURLOCK, CA | 32 | 2 | — |
| FLOURNOY SCHOOL | FLOURNOY, CA | 32 | 12 | — |
| USFS BEARDSLEY CAMPGROUND | SONORA, CA | 32 | 0 | — |
| ELKHORN REGIONAL PARK | WOODLAND, CA | 32 | 11 | — |
| AMADOR FLOWER FARM | PLYMOUTH, CA | 31 | 0 | — |
| WILLOW CREEK M.W.C.-LAMBERTVILLE | WILLOWS, CA | 31 | 2 | — |
| WILCOX STATION RANCH | CANYON, CA | 31 | 15 | — |
| CHRISTIAN SERVICE CENTER OF SENATOR WASH | WINTERHAVEN, CA | 31 | 4 | — |
| PARADISE WATER SYSTEM | BAKERSFIELD, CA | 31 | 53 | — |
| MADERA CO BASS LAKE GOVT CENTER | MADERA, CA | 31 | 0 | — |
| BUCK MEADOWS LODGE-YOSEMITE WESTGATE | SAN FRANCISCO, CA | 31 | 6 | — |
| I & E LATH MILL | PHILO, CA | 31 | 2 | — |
| STEVINSON BAR AND GRILL | STEVINSON, CA | 31 | 2 | — |
| SPRECKELS LN WS #02 | SALINAS, CA | 31 | 4 | — |
| ROSECREST MUTUAL | ROSEVILLE, CA | 31 | 18 | — |
| ANZA BORREGO SP - VALLECITO | BORREGO SPRINGS, CA | 31 | 0 | — |
| DURHAM FERRY COMMUNITY SCHOOL | STOCKTON, CA | 31 | 21 | — |
| BURLINGTON NORTHERN SANTA FE | SAN BERNARDINO, CA | 31 | 12 | — |
| CAMP SHASTA COFFEE COMPANY | LAKEHEAD, CA | 31 | 6 | — |
| QUIVIRA VINEYARDS | HEALDSBURG, CA | 31 | 35 | — |
| MICHAEL ELLIS SCHOOL FOR DOG TRAINERS | SEBASTOPOL, CA | 31 | 12 | — |
| GLEANINGS FOR THE HUNGRY | SULTANA, CA | 31 | 223 | — |
| SOULTS PUMP & EQUIPMENT COMPANY | TULARE, CA | 31 | 8 | — |
| SORENSON S HOA | MAPLETON, CA | 30 | 24 | — |
| ALPINE CO COMMUNITY DEVELOPMENT | MARKLEEVILLE, CA | 30 | 2 | — |
| CALVARY CONCOW CHURCH | YANKEE HILL, CA | 30 | 0 | — |
| BUTTE MEADOWS CAMP | SUSANVILLE, CA | 30 | 4 | — |
| COHASSET INDUSTRIAL PARK | CHICO, CA | 30 | 22 | — |
| TAMARACK SPRINGS MUTUAL WATER | LODI, CA | 30 | 50 | — |