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 |
| BETTERAVIA GAS & MART | SANTA MARIA, CA | 150 | 14 | — |
| CAMBRIA WINERY | SANTA MARIA, CA | 150 | 0 | — |
| FLAG IS UP FARMS | SOLVANG, CA | 150 | 0 | — |
| HIDDEN FALLS GIRL SCOUT CAMP | ALAMEDA, CA | 150 | 20 | — |
| MIDLAND SCHOOL | LOS OLIVOS, CA | 150 | 26 | — |
| ANDERSON TUCKER OAKS GOLF | REDDING, CA | 150 | 12 | — |
| USFS - SIMS CAMPGROUND | MOUNT SHASTA, CA | 150 | 0 | — |
| UNITED PARCEL SVC - ANDERSON | WEST SACRAMENTO, CA | 150 | 14 | — |
| MOUNTAIN MEADOWS CAMP | SHINGLETOWN, CA | 150 | 5 | — |
| PNEUMA RETREAT CENTER - STEWART MINERAL | WEED, CA | 150 | 32 | — |
| MONTE SHASTA M.W.C. | MT. SHASTA, CA | 150 | 6 | — |
| DOCTOR'S PARK OWNERS ASSOCIATION | MT. SHASTA, CA | 150 | 3 | — |
| HINES NURSERIES WINTERS NORTH | WINTERS, CA | 150 | 3 | — |
| MISSION HIGHLANDS MUTUAL WATER CO. | SONOMA, CA | 150 | 16 | — |
| RIEBLI MUTUAL WATER COMPANY | FULTON, CA | 150 | 13 | — |
| AUSTIN CREEK MUTUAL (SPRINGHILL) | CAZADERO, CA | 150 | 13 | — |
| CALPINE (GEYSERS ADMINISTRATION CENTER) | MIDDLETOWN, CA | 150 | 6 | — |
| CAMP LIAHONA REDWOODS | LAKEPORT, CA | 150 | 12 | — |
| NICHOLSON RANCH WINERY | SONOMA, CA | 150 | 9 | — |
| HOP KILN WINERY | PASO ROBLES, CA | 150 | 2 | — |
| MACROSTIE WINERY AND VINEYARD | HEALDSBURG, CA | 150 | 0 | — |
| OID #22 - WILLIAMS TRACT | OAKDALE, CA | 150 | 7 | — |
| BUEHNER WATER SYSTEM | TRACY, CA | 150 | 35 | — |
| PASQUINI'S (MICHELI) WS | LIVE OAK, CA | 150 | 11 | — |
| REYNOLDS CONSUMER PRODUCTS (RED BLUFF) | REB BLUFF, CA | 150 | 6 | — |
| LASSEN VNP - LOST CREEK | MINERAL, CA | 150 | 0 | — |
| GATEWAY RESTAURANT & LODGE | THREE RIVERS, CA | 150 | 26 | — |
| RMRC-FIR & COVE GROUP CAMPGROUNDS | OVERLAND PARK, CA | 150 | 8 | — |
| RM PYLES BOYS CAMP | VALENCIA, CA | 150 | 2 | — |
| COMFORT INN & SUITES | THREE RIVERS, CA | 150 | 35 | — |
| FAIRWAY MUTUAL WATER CO | KINGSBURG, CA | 150 | 39 | — |
| BOOTH RANCHES LLC | ORANGE COVE, CA | 150 | 68 | — |
| YOSEMITE NPS-GLEN AULIN | YOSEMITE NP, CA | 150 | 2 | — |
| CAL FIRE BASELINE CONSERVATION CAMP | JAMESTOWN, CA | 150 | 43 | — |
| ELKINS RANCH | FILLMORE, CA | 150 | 24 | — |
| MARIANI NUT COMPANY - BUCKEYE RD | WINTERS, CA | 150 | 10 | — |
| NELSON'S GROVE | SACRAMENTO, CA | 150 | 6 | — |
| MJUSD LOMA RICA SCHOOL | MARYSVILLE, CA | 150 | 8 | — |
| CALTRANS - MOUNTAIN PASS JPOE CVEF | SAN BERNARDINO, CA | 149 | 12 | — |
| FAIRWAY ESTATES PWS CSA-18 | STOCKTON, CA | 149 | 9 | — |
| DIXON 76 | VACAVILLE, CA | 149 | 17 | — |
| CODY WATER ASSOCIATION | ROCKLIN, CA | 148 | 6 | — |
| HART CREEK ESTATES MUTUAL WATER CO. | BAKERSFIELD, CA | 148 | 14 | — |
| MD 06 LAKE SHORE PARK | MADERA, CA | 148 | 242 | — |
| NICKEL & NICKEL WINERY | ST. HELENA, CA | 148 | 8 | — |
| CURRIER ESTATES WATER CORP | TRACY, CA | 148 | 17 | — |
| ROSEVIEW HEIGHTS MUTUAL WATER COMPANY | SAN JOSE, CA | 148 | 34 | — |
| GEORGE RANCH MUTUAL WATER COMPANY | HERCULES, CA | 148 | 10 | — |
| MULBERRY MHP | STOCKTON, CA | 148 | 12 | — |
| PARADISE CANYON IMPROVEMENT ASSOCIATION | SANTA BARBARA, CA | 147 | 6 | — |