Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| CAL/AM WATER COMPANY - SAN MARINO | ROSEMEAD, CA | 47,995 | 2 | Detected |
| SAN LUIS OBISPO WATER DEPARTMENT | SAN LUIS OBISPO, CA | 47,788 | 2 | Detected |
| CERRITOS - CITY, WATER DEPT. | CERRITOS, CA | 47,475 | 0 | Detected |
| CITY OF LOS BANOS | LOS BANOS, CA | 47,419 | 10 | Detected |
| CITY OF MORGAN HILL | MORGANN HILL, CA | 47,374 | 256 | Detected |
| GOLDEN STATE WATER CO. - CORDOVA | RANCHO CORDOVA, CA | 47,161 | 12 | Clean |
| CAMARILLO WATER DEPT | CAMARILLO, CA | 46,824 | 0 | Detected |
| COLTON, CITY OF | COLTON, CA | 46,525 | 3 | Detected |
| BELLFLOWER - SOMERSET MWC | BELLFLOWER, CA | 46,300 | 2 | Detected |
| CITY OF SAN JOSE - NSJ/ALVISO | SAN JOSE, CA | 45,559 | 10 | Detected |
| GOLDEN STATE WATER COMPANY - SIMI VALLEY | RANCHO CORDOVA, CA | 45,128 | 0 | Detected |
| OILDALE MWC | BAKERSFIELD, CA | 44,899 | 24 | Detected |
| HAWTHORNE-CITY WATER DEPT. | SAN JOSE, CA | 44,718 | 8 | Detected |
| ROHNERT PARK, CITY OF | ROHNERT PARK, CA | 43,821 | 561 | Detected |
| ELK GROVE WATER DISTRICT | ELK GROVE, CA | 43,813 | 6 | Detected |
| EL CENTRO, CITY OF | EL CENTRO, CA | 43,772 | 12 | Detected |
| COACHELLA WATER AUTHORITY | COACHELLA, CA | 43,590 | 24 | Clean |
| MISSION SPRINGS WD | DESERT HOT SPRINGS, CA | 43,484 | 21 | Clean |
| DIABLO WATER DISTRICT | OAKLEY, CA | 43,357 | 0 | Detected |
| GSWC - NORWALK | ANAHEIM, CA | 43,176 | 3 | Detected |
| CAMP PENDLETON (SOUTH) | CAMP PENDLETON, CA | 42,219 | 40 | Detected |
| SACRAMENTO INTERNATIONAL AIRPORT [SWS] | SACRAMENTO, CA | 41,717 | 2 | Clean |
| INDIAN WELLS VALLEY W.D. | RIDGECREST, CA | 41,580 | 44 | Detected |
| CITY OF SAN BRUNO | SAN BRUNO, CA | 41,327 | 2 | Detected |
| CARMICHAEL WATER DISTRICT | CARMICHAEL, CA | 41,193 | 4 | Detected |
| SOUTH COAST WATER DISTRICT | LAGUNA BEACH, CA | 41,118 | 4 | Detected |
| CALIFORNIA STATE UNIVERSITY FRESNO | FRESNO, CA | 41,000 | 4 | Detected |
| SOQUEL CREEK WATER DISTRICT | SOQUEL, CA | 40,809 | 4 | Detected |
| PICO RIVERA - CITY, WATER DEPT. | PICO RIVERA, CA | 40,600 | 17 | Detected |
| LOMPOC-CITY WATER UTILITY DIV | LOMPOC, CA | 40,473 | 8 | Detected |
| SAN DIEGUITO WD | ENCINITAS, CA | 40,405 | 3 | Detected |
| CALEXICO, CITY OF | CALEXICO, CA | 40,357 | 17 | Detected |
| BEVERLY HILLS-CITY, WATER DEPT. | BEVERLY HILLS, CA | 40,121 | 91 | Detected |
| ADELANTO, CITY OF | ADELANTO, CA | 39,930 | 40 | Detected |
| GSWC - CLAREMONT | SAN DIMAS, CA | 39,730 | 6 | Detected |
| SANTA MARGARITA WATER DISTRICT-ID9 | RANCHO SANTA MARGARITA, CA | 39,684 | 22 | Detected |
| SAN GABRIEL COUNTY WD | ROSEMEAD, CA | 39,345 | 0 | Clean |
| CITY OF LIVERMORE | LIVERMORE, CA | 38,892 | 2 | Clean |
| NORTH COAST COUNTY WATER DIST | PACIFICA, CA | 38,546 | 5 | Clean |
| MARINA COAST WATER DISTRICT | MARINA, CA | 38,377 | 8 | Detected |
| GSWC - CULVER CITY | ANAHEIM, CA | 38,213 | 7 | Detected |
| TEJON CASTAC WD - I5 & LAVAL RD | LEBEC, CA | 38,125 | 26 | Clean |
| MONROVIA-CITY, WATER DEPT. | MONROVIA, CA | 37,931 | 3 | Detected |
| VAUGHN WC INC | BAKERSFIELD, CA | 37,189 | 14 | Detected |
| RAMONA MUNICIPAL WD | RAMONA, CA | 37,047 | 2 | Detected |
| NAS NORTH ISLAND & NAB CORONADO | SAN DIEGO, CA | 36,990 | 9 | Detected |
| RUBIDOUX COMMUNITY SD | JURUPA VALLEY, CA | 36,827 | 103 | Detected |
| TRUCKEE-DONNER PUD, MAIN | TRUCKEE, CA | 36,730 | 6 | Detected |
| PINE VALLEY BORDER PATROL STATION | SAN DIEGO, CA | 36,604 | 3 | — |
| ESTERO MUNICIPAL IMPROVEMENT DISTRICT | FOSTER CITY, CA | 36,556 | 7 | Clean |