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 |
|---|---|---|---|---|
| MERIDIAN RD WS #09 | SAN RAMON, CA | 37 | 77 | — |
| BOUCHAINE VINEYARDS | NAPA, CA | 37 | 13 | — |
| FOLEY JOHNSON WINERY | RUTHERFORD, CA | 37 | 0 | — |
| DI ROSA ART PRESERVE | NAPA, CA | 37 | 14 | — |
| U.S. BUREAU OF RECLAMATION-LK. BERRYESSA | NAPA, CA | 37 | 4 | — |
| STATELINE SERVICES INC | NIPTON, CA | 37 | 2 | — |
| TERRIBLES #412 | LAS VEGAS, CA | 37 | 0 | — |
| SUNRISE MOBILEHOME PARK | SAN FRANCISCO, CA | 37 | 15 | — |
| HUMANE SOCIETY OF SONOMA COUNTY | SANTA ROSA, CA | 37 | 4 | — |
| JJAPT BLOOMFIELD | SEBASTOPOL, CA | 37 | 0 | — |
| MAURITSON LABOR HOUSE | HEALDSBURG, CA | 37 | 0 | — |
| WOODSON BRIDGE S.R.A. | OROVILLE, CA | 37 | 15 | — |
| BUD FINE MWC | LEWISTON, CA | 37 | 25 | — |
| COURAGE TO CHANGE | EXETER, CA | 37 | 4 | — |
| KINGS RIVER POINT | PIEDRA, CA | 36 | 169 | — |
| PAPPAS & CO (MENDOTA) | FRESNO, CA | 36 | 310 | — |
| HILLVIEW ACRES MUTUAL WATER COMPANY | WELDON, CA | 36 | 23 | — |
| KIMBERLINA HOUSING UNIT | WASCO, CA | 36 | 6 | — |
| 148 EAST WATER SYSTEM | INYOKERN, CA | 36 | 144 | — |
| SILVER SPUR CENTER/GALLERY ROW | SANGER, CA | 36 | 9 | — |
| HOUNDS TOOTH INN | OAKHURST, CA | 36 | 26 | — |
| NICASIO VALLEY RANCH MUTUAL | NICASIO, CA | 36 | 31 | — |
| YOSEMITE RESORT PROPERTIES | PASADENA, CA | 36 | 8 | — |
| REDWOODS 70'S WATER SYSTEM | OAKHURST, CA | 36 | 0 | — |
| EVERGREEN MOBILE HOME PARK | LINCOLN, CA | 36 | 11 | — |
| MERCED NEW LIFE SCHOOL | MERCED, CA | 36 | 2 | — |
| HILLTOP RANCH-LOONEY ROAD | BALLICO, CA | 36 | 2 | — |
| BIG RIVER VISTA MUTUAL WATER COMPANY | MENDOCINO, CA | 36 | 3 | — |
| ROYAL SIERRA ESTATES WS | SALINAS, CA | 36 | 143 | — |
| PINE ST WS #01 | GREENFIELD, CA | 36 | 5 | — |
| VIERRA CANYON WS #29 | PRUNEDALE, CA | 36 | 39 | — |
| MAXVILLE LAKE WINERY | ST. HELENA, CA | 36 | 24 | — |
| LOS MADRONES MWC | SAN JUAN BAUTISTA, CA | 36 | 49 | — |
| MWD OF SO CAL IRON MOUNTAIN | LA VERNE, CA | 36 | 33 | — |
| VENTUCOPA | VENTUCOPA, CA | 36 | 15 | — |
| FOOTHILL MUTUAL WATER COMPANY | MORGAN HILL, CA | 36 | 40 | — |
| DEER HILL MUTUAL WATER CO | MORGAN HILL, CA | 36 | 1 | — |
| BOBS MARKET | ANDERSON, CA | 36 | 0 | — |
| OAK GROVE SCHOOL DISTRICT OFFICE | SANTA ROSA, CA | 36 | 6 | — |
| FRITSCH INDUSTRIAL PARK | SANTA ROSA, CA | 36 | 0 | — |
| SONOMA BOTANICAL GARDEN | GLEN ELLEN, CA | 36 | 0 | — |
| MAZE BLVD MOBILEHOME PARK | TRACY, CA | 36 | 14 | — |
| RANCHO COLORADO WS | RED BLUFF, CA | 36 | 12 | — |
| RMRC-UPPER COFFEE CAMP DAY USE | OVERLAND PARK, CA | 36 | 2 | — |
| CHINESE CAMP SCHOOL | JAMESTOWN, CA | 36 | 18 | — |
| CAMP TUOLUMNE TRAILS | GROVELAND, CA | 36 | 2 | — |
| CAPLES LAKE CG | PIONEER, CA | 35 | 1 | — |
| ALPINE EARLY LEARNING CENTER | MARKLEEVILLE, CA | 35 | 1 | — |
| MACT HEALTH BOARD, INC. | ANGELS CAMP, CA | 35 | 2 | — |
| BYRON AIRPORT | BYRON, CA | 35 | 4 | — |