Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| CITY OF MERCED | MERCED, CA | 93,692 | 11 | Detected |
| CITY OF REDWOOD CITY | REDWOOD CITY, CA | 92,819 | 8 | Clean |
| CAL AM WATER COMPANY - MONTEREY | PACIFIC GROVE, CA | 92,450 | 17 | Detected |
| ANZA COMMUNITY HALL | ANZA, CA | 92,019 | 18 | — |
| CITY OF WESTMINSTER | WESTMINSTER, CA | 90,911 | 13 | Detected |
| SANTA MONICA-CITY, WATER DIVISION | LOS ANGELES, CA | 89,947 | 3 | Detected |
| CITY OF REDDING | REDDING, CA | 89,628 | 15 | Detected |
| PLACER CWA - FOOTHILL | AUBURN, CA | 89,544 | 0 | Clean |
| OLIVENHAIN MWD | ENCINITAS, CA | 86,458 | 0 | Detected |
| CHINO, CITY OF | CHINO, CA | 86,435 | 44 | Clean |
| WESTERN MWD | RIVERSIDE, CA | 86,062 | 0 | Detected |
| MANTECA, CITY OF | MANTECA, CA | 84,928 | 77 | Detected |
| NAPA, CITY OF | NAPA, CA | 84,804 | 23 | Clean |
| INDIO WATER AUTHORITY | INDIO, CA | 84,757 | 14 | Clean |
| GOLETA WATER DISTRICT | GOLETA, CA | 84,462 | 22 | Detected |
| YORBA LINDA WATER DISTRICT | PLACENTIA, CA | 84,292 | 4 | Detected |
| CITY OF BUENA PARK | BUENA PARK, CA | 81,998 | 12 | Detected |
| CITY OF MILPITAS | MILPITAS, CA | 81,773 | 15 | Clean |
| CITY OF MOUNTAIN VIEW | MOUNTAIN VIEW, CA | 81,501 | 17 | Detected |
| BIG BEAR ADMINISTRATION | SAN BERNARDINO, CA | 81,075 | 12 | — |
| FOLSOM, CITY OF - MAIN | FOLSOM, CA | 80,969 | 8 | Clean |
| INGLEWOOD- CITY, WATER DEPT. | INGLEWOOD, CA | 80,824 | 16 | Detected |
| CITY OF ALHAMBRA | ALHAMBRA, CA | 79,776 | 8 | Detected |
| UPLAND, CITY OF | UPLAND, CA | 78,376 | 10 | Detected |
| REDLANDS CITY MUD-WATER DIV | REDLANDS, CA | 78,025 | 11 | Detected |
| CITY OF PLEASANTON | PLEASANTON, CA | 76,689 | 4 | Detected |
| SOUTH GATE-CITY, WATER DEPT. | SOUTH GATE, CA | 76,443 | 127 | Detected |
| CHINO HILLS, CITY OF | CHINO HILLS, CA | 76,414 | 43 | Clean |
| SNOW SUMMIT | BIG BEAR LAKE, CA | 75,500 | 45 | — |
| COMPTON-CITY, WATER DEPT. | COMPTON, CA | 74,877 | 20 | Detected |
| DESERT WATER AGENCY | PALM SPRINGS, CA | 74,807 | 22 | Clean |
| TURLOCK, CITY OF | TURLOCK, CA | 72,682 | 20 | Clean |
| LIBERTY UTILITIES - BELLFLOWER-NORWALK | DOWNEY, CA | 72,624 | 4 | Detected |
| LAS VIRGENES MWD | CALABASAS, CA | 72,602 | 9 | Detected |
| TULARE, CITY OF | TULARE, CA | 72,131 | 18 | Clean |
| CALIFORNIA WATER SERVICE CO. - PALOS VER | SAN JOSE, CA | 71,452 | 6 | Detected |
| CITY OF YUBA CITY | YUBA CITY, CA | 70,256 | 37 | Clean |
| CWSC LOS ALTOS SUBURBAN | SAN JOSE, CA | 69,973 | 7 | Detected |
| VALLEY COUNTY WATER DIST. | BALDWIN PARK, CA | 68,871 | 8 | Clean |
| CITY OF NEWPORT BEACH | NEWPORT BEACH, CA | 68,572 | 7 | Detected |
| LODI, CITY OF | LODI, CA | 68,272 | 16 | Detected |
| CITRUS HEIGHTS WATER DISTRICT | CITRUS HEIGHTS, CA | 67,818 | 8 | Detected |
| CITY OF DAVIS | DAVIS, CA | 67,457 | 62 | Detected |
| CITY OF PALO ALTO | PALO ALTO, CA | 67,231 | 18 | Clean |
| LYNWOOD-CITY, WATER DEPT. | LYNWOOD, CA | 66,967 | 20 | Detected |
| BEAUMONT CHERRY VALLEY WD | BEAUMONT, CA | 66,841 | 8 | Clean |
| CAL AMERICAN WATER CO | ROSEMEAD, CA | 66,809 | 10 | Detected |
| CITY OF TUSTIN | TUSTIN, CA | 66,600 | 17 | Detected |
| CITY OF MADERA | MADERA, CA | 66,560 | 23 | Clean |
| LAKEWOOD - CITY, WATER DEPT. | LAKEWOOD, CA | 66,135 | 6 | Detected |