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 |
| THE WILLOWS RESORT | MONTEREY, CA | 57 | 28 | — |
| FOG CREST WINERY | SEBASTOPOL, CA | 57 | 0 | — |
| 7180 HWY 116 LLC | UKIAH, CA | 57 | 0 | — |
| EKTIMO VINEYARDS | SEBASTOPOL, CA | 57 | 12 | — |
| BRICOLEUR VINEYARDS | SAN FRANCISCO, CA | 57 | 0 | — |
| HUCKLEBERRY WATER DEVELOPMENT | DANVILLE, CA | 56 | 24 | — |
| USFS/TRIMMER WORK CENTER | CLOVIS, CA | 56 | 78 | — |
| PG&E BALCH CAMP | AUBERRY, CA | 56 | 45 | — |
| ROCK CREEK LAKES RESORT | BISHOP, CA | 56 | 5 | — |
| FOURTH STREET WATER SYSTEM | LAKE ISABELLA, CA | 56 | 80 | — |
| WILLIAM FISHER MEMORIAL WATER COMPANY | MOJAVE, CA | 56 | 144 | — |
| HART FLAT BEAR MUTUAL WATER | BAKERSFIELD, CA | 56 | 11 | — |
| INNISFREE WATER COMPANY | KELSEYVILLE, CA | 56 | 6 | — |
| LAHONTAN HEIGHTS HOME. ASSOC. | JANESVILLE, CA | 56 | 4 | — |
| BLUE SKIES TRAILOR PARK | ARCADIA, CA | 56 | 2 | — |
| WINTERHAVEN MOBILE ESTATES | LAKE HUGHES, CA | 56 | 76 | — |
| OUTWARD BOUND CALIFORNIA | MIDPINES, CA | 56 | 7 | — |
| ALBION MUTUAL WATER COMPANY | ALBION, CA | 56 | 6 | — |
| POINT OF VIEW MUTUAL WATER CO | MENDOCINO, CA | 56 | 8 | — |
| SEAFOAM LODGE | LITTLE RIVER, CA | 56 | 11 | — |
| JOST POST WA | SALINAS, CA | 56 | 37 | — |
| DESMOND RD WS #03 | SALINAS, CA | 56 | 42 | — |
| GREEN ACRES WA | CASTROVILLE, CA | 56 | 46 | — |
| GRAVES SCHOOL WS | SALINAS, CA | 56 | 2 | — |
| BELK FARMS | THERMAL, CA | 56 | 5 | — |
| IVANPAH SOLAR THERMAL POWER PLANT | CARLSBAD, CA | 56 | 2 | — |
| RAUDEL DELGADO WATER SYSTEM | MANTECA, CA | 56 | 14 | — |
| BOOKER WINERY | PASO ROBLES, CA | 56 | 0 | — |
| REDWOOD TERRACE MUTUAL | LA HONDA, CA | 56 | 137 | — |
| VAJRAYANA FOUNDATION | WATSONVILLE, CA | 56 | 36 | — |
| SID - PEABODY | VACAVILLE, CA | 56 | 0 | — |
| LICHAU HYLANDS MUTUAL WATER COMPANY | PENNGROVE, CA | 56 | 0 | — |
| TULLY MOBILE ESTATES | OAKDALE, CA | 56 | 4 | — |
| MINERAL HOMEOWNER'S ASSN | DURHAM, CA | 56 | 6 | — |
| HUMBOLDT WOODLANDS MUTUAL | FORSEST RANCH, CA | 55 | 8 | — |
| MCAVOY YACHT HARBOR | BYRON, CA | 55 | 4 | — |
| IDYLWILDE TRACT ASSOCIATION | ARVIN, CA | 55 | 32 | — |
| VIKING RV PARK | KINGSBURG, CA | 55 | 28 | — |
| FOSTER FARMS - CEDAR HATCHERY | LIVINGSTON, CA | 55 | 5 | — |
| CARDINAL VILLAGE RESORT | BISHOP, CA | 55 | 20 | — |
| SIERRA CASCADE NURSERY | SUSANVILLE, CA | 55 | 1 | — |
| LITTLE BALDY WATER | LLANO, CA | 55 | 9 | — |
| WAGON WHEEL PLAZA | LOS ANGELES, CA | 55 | 19 | — |
| BUCK RIDGE HENSLEY LAKE | RAYMOND, CA | 55 | 2 | — |
| USFS - DRY GULCH/DIRT FLAT CAMPGROUND | PHOENIX, CA | 55 | 4 | — |
| MARIPOSA COUNTY PUBLIC WORKS DEPARTMENT | MARIPOSA, CA | 55 | 36 | — |
| MUSD -COULTERVILLE - GREELEY HILL SCHOOL | MARIPOSA, CA | 55 | 4 | — |
| GEMPERLE EGG RANCH | TURLOCK, CA | 55 | 39 | — |
| YOSEMITE VALLEY BEEF PACKING CO INC | MERCED, CA | 55 | 24 | — |
| DEL MONTE FARMS RD WS #03 | CASTROVILLE, CA | 55 | 27 | — |