Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| CITY OF ROSEVILLE | ROSEVILLE, CA | 155,612 | 7 | Detected |
| CALIFORNIA WATER SERVICE CO. - ELA | SAN JOSE, CA | 152,474 | 13 | Detected |
| POMONA - CITY, WATER DEPT. | POMONA, CA | 151,713 | 14 | Detected |
| CWS - VISALIA | SAN JOSE, CA | 148,496 | 4 | Detected |
| RANCHO CALIFORNIA WATER DISTRICT | TEMECULA, CA | 146,147 | 4 | Detected |
| CALIFORNIA WATER SERVICE CO. - DOMINGUEZ | SAN JOSE, CA | 143,996 | 19 | Detected |
| CITY OF FULLERTON | FULLERTON, CA | 139,461 | 14 | Detected |
| ESCONDIDO, CITY OF | ESCONDIDO, CA | 137,044 | 2 | Detected |
| VICTORVILLE WATER DISTRICT | VICTORVILLE, CA | 135,983 | 13 | Detected |
| JURUPA COMMUNITY SD | JURUPA VALLEY, CA | 135,093 | 16 | Clean |
| VISTA IRRIGATION DISTRICT | VISTA, CA | 132,430 | 17 | Detected |
| EL DORADO ID - MAIN | PLACERVILLE, CA | 132,171 | 26 | Detected |
| CITY OF SANTA CLARA | SANTA CLARA, CA | 130,746 | 7 | Detected |
| CITY OF CLOVIS | CLOVIS, CA | 130,130 | 14 | Detected |
| PALMDALE WATER DIST. | PALMDALE, CA | 126,804 | 12 | Detected |
| CWSC SALINAS | SAN JOSE, CA | 123,679 | 24 | Detected |
| CITY OF VALLEJO | VALLEJO, CA | 121,420 | 12 | Clean |
| CITY OF ORANGE | ORANGE, CA | 120,770 | 6 | Detected |
| CITY OF FAIRFIELD | FAIRFIELD, CA | 120,377 | 8 | Clean |
| CITY OF ANTIOCH | ANTIOCH, CA | 115,074 | 6 | Clean |
| CAL-WATER SERVICE CO.-CHICO | SAN JOSE, CA | 114,925 | 17 | Detected |
| GOLDEN STATE WC - WEST ORANGE COUNTY | ANAHEIM, CA | 114,379 | 0 | Detected |
| VALLECITOS WD | SAN MARCOS, CA | 113,500 | 2 | Detected |
| VENTURA WATER DEPARTMENT | VENTURA, CA | 113,500 | 12 | Detected |
| GREAT OAKS WC INC | SAN JOSE, CA | 110,088 | 11 | Detected |
| AZUSA LIGHT AND WATER | AZUSA, CA | 110,044 | 2 | Detected |
| MESA WATER DISTRICT | COSTA MESA, CA | 110,000 | 4 | Detected |
| SAN BERNARDINO VALLEY WD | SAN BERNARDINO, CA | 109,608 | 2 | — |
| CITY OF SANTA MARIA UTILITIES DEPARTMENT | SANTA MARIA, CA | 109,477 | 13 | Detected |
| DOWNEY - CITY, WATER DEPT. | DOWNEY, CA | 108,816 | 16 | Detected |
| EAST VALLEY WATER DISTRICT | HIGHLAND, CA | 108,629 | 13 | Detected |
| TORRANCE-CITY, WATER DEPT. | TORRANCE, CA | 106,183 | 57 | Detected |
| CAL-AM WATER CORONADO | IMPERIAL BEACH, CA | 106,000 | 2 | Detected |
| BURBANK-CITY, WATER DEPT. | BURBANK, CA | 105,603 | 16 | Detected |
| CITY OF DALY CITY | DALY CITY, CA | 104,901 | 12 | Detected |
| WEST VALLEY WATER DISTRICT | RIALTO, CA | 104,498 | 19 | Clean |
| CALIFORNIA WATER SERVICE - SAN MATEO | SAN JOSE, CA | 102,348 | 7 | Clean |
| CITY OF SAN JOSE - EVG/EDV/COY | SAN JOSE, CA | 101,265 | 6 | Detected |
| WALNUT VALLEY WATER DISTRICT | WALNUT, CA | 100,941 | 5 | Detected |
| HESPERIA WD | HESPERIA, CA | 100,744 | 7 | Detected |
| SOUTH TAHOE PUD - MAIN | SOUTH LAKE TAHOE, CA | 100,000 | 13 | Detected |
| CITY OF SANTA BARBARA WATER DEPARTMENT | SANTA BARBARA, CA | 98,872 | 9 | Detected |
| DUBLIN SAN RAMON SERVICES DISTRICT | PLEASANTON, CA | 98,776 | 4 | Clean |
| CITY OF VACAVILLE | ELMIRA, CA | 97,000 | 7 | Detected |
| CALIFORNIA WATER SERVICE CO. - HERM/REDO | SAN JOSE, CA | 96,853 | 10 | Detected |
| TRACY, CITY OF | TRACY, CA | 96,609 | 10 | Detected |
| CARLSBAD MWD | CARLSBAD, CA | 95,158 | 0 | Detected |
| VENTURA WWD NO. 8 - SIMI VALLEY | SIMI VALLEY, CA | 94,738 | 12 | Clean |
| SANTA CRUZ WATER DEPARTMENT | SANTA CRUZ, CA | 94,626 | 15 | Detected |
| PADRE DAM MWD | SANTEE, CA | 93,859 | 4 | Detected |