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 |
| JACOBS TERMINOUS MARKET | LODI, CA | 25 | 2 | — |
| JENSEN PRECAST | SPARKS, CA | 25 | 10 | — |
| RIPON VFW POST 1051 WATER SYSTEM | RIPON, CA | 25 | 2 | — |
| PARK GREEN HOUSES WATER SYSTEM | RIPON, CA | 25 | 8 | — |
| DELRIO MARKET & DELI | FRENCH CAMP, CA | 25 | 2 | — |
| INVESTORS OF KING ISLAND WATER SYS | CAMPBELL, CA | 25 | 8 | — |
| DIEDE TRUCKING WATER SYSTEM | WOODBRIDGE, CA | 25 | 6 | — |
| TRACY MATRL RECVRY/SLD WASTE WS | TRACY, CA | 25 | 44 | — |
| MOOSE OUTDOOR SPORTSMAN CLUB | ACAMPO, CA | 25 | 2 | — |
| ABF FREIGHT WATER SYSTEM | FORT SMITH, CA | 25 | 20 | — |
| PNP STOCKTON #80 | RANCHO CORDOVA, CA | 25 | 30 | — |
| OASIS MARKET & PRODUCE | MANTECA, CA | 25 | 10 | — |
| WESTGATE LANDING PARK WATER SYSTEM | LOD, CA | 25 | 11 | — |
| VIAGGIO WINERY WATER SYSTEM | ACAMPO, CA | 25 | 6 | — |
| A SAMBADO & SON 39-321 | LINDEN, CA | 25 | 4 | — |
| SCHULTE ROAD WAREHOUSE 3, LLC WTR SYS | SAN FRANCISCO, CA | 25 | 14 | — |
| WEST 11TH STREET CHEVRON WATER SYSTEM | TRACY, CA | 25 | 0 | — |
| VAN GRONINGEN & SONS INC WATER SYSTEM | MANTECA, CA | 25 | 0 | — |
| TRACY ISLAMIC CENTER WATER SYSTEM | TRACY, CA | 25 | 0 | — |
| CALIFORNIA ISLAMIC CENTER | LODI, CA | 25 | 0 | — |
| RIPON CHURCH OF CHRIST | RIPON, CA | 25 | 0 | — |
| CRESTON COUNTRY STORE | CRESTON, CA | 25 | 8 | — |
| PRECISION MUTUAL WATER COMPANY | ARROYO GRANDE, CA | 25 | 12 | — |
| CUYAMA LANE WATER COMPANY | SANTA MARIA, CA | 25 | 15 | — |
| BABE RUTH'S OAK VIEW | BRADLY, CA | 25 | 11 | — |
| PASO ROBLES CHEVROLET CADILLAC | PASO ROBLES, CA | 25 | 2 | — |
| HARMONY WATER WORKS | SAN LUIS OBISPO, CA | 25 | 0 | — |
| SAN PASO TRUCK STOP | PASO ROBLES, CA | 25 | 5 | — |
| SUNSET DRIVE-IN SNACK BAR | SAN LUIS OBISPO, CA | 25 | 4 | — |
| LOADING CHUTE | CRESTON, CA | 25 | 23 | — |
| 141 SUBURBAN ROAD WATER SUPPLY | SAN LUIS OBISPO, CA | 25 | 2 | — |
| HALFWAY STATION | ATASCADERO, CA | 25 | 9 | — |
| TMC SUBURBAN, LLC | SAN LUIS OBISPO, CA | 25 | 4 | — |
| CONGREGATION BETH DAVID | SAN LUIS OBISPO, CA | 25 | 0 | — |
| NINER WINE ESTATES, LLC | SAN LUIS OBISPO, CA | 25 | 4 | — |
| EDNA VALLEY VINEYARDS | SAN LUIS OBISPO, CA | 25 | 2 | — |
| ARONHILL VINEYARD | TEMPLETON, CA | 25 | 0 | — |
| INN AT OPOLO KITCHEN, THE | WESTLAKE VILLAGE, CA | 25 | 2 | — |
| INDEPENDENCE WATER SYSTEM | SAN LUIS OBISPO, CA | 25 | 0 | — |
| SIXMILEBRIDGE WINERY | PASO ROBLES, CA | 25 | 0 | — |
| ADA'S LODGES | PASO ROBLES, CA | 25 | 4 | — |
| CIRCLE BAR B GUEST RANCH | GOLETA, CA | 25 | 8 | — |
| FREMONT/SANTA YNEZ IMPROVEMENT ASSOC. | SANTA BARBARA, CA | 25 | 13 | — |
| MORETON BAY PROFESSIONAL PLAZA | GOLETA, CA | 25 | 253 | — |
| GAVIOTA OIL HEATING FACILITY | GOLETA, CA | 25 | 6 | — |
| SANTA YNEZ ROBLAR MOBILE HOME PARK | LA CANADA, CA | 25 | 17 | — |
| MARBORG INDUSTRIES | SANTA MARIA, CA | 25 | 15 | — |
| MELVILLE WINERY | LOMPOC, CA | 25 | 10 | — |
| SANFORD WINERY | LOMPOC, CA | 25 | 3 | — |
| COTTON WOOD WINERY | SANTA MARA, CA | 25 | 16 | — |