Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| SAN JOAQUIN COUNTY - LINCOLN VILLAGE | STOCKTON, CA | 5,990 | 5 | Clean |
| MALAGA COUNTY WATER DISTRICT | FRESNO, CA | 5,979 | 36 | Clean |
| KONOCTI COUNTY WATER DISTRICT | CLEARLAKE, CA | 5,928 | 3 | Detected |
| GOLDEN STATE WATER COMPANY - LOS OSOS | HAWTHORNE, CA | 5,924 | 0 | Detected |
| GLEN HELEN WATER SYSTEM | SAN BERNARDINO, CA | 5,900 | 0 | Detected |
| SANTA ANA RIVER WATER COMPANY | JURUPA VALLEY, CA | 5,848 | 24 | Clean |
| RANCHO MURIETA COMMUNITY SERVI | RANCHO MURIETA, CA | 5,728 | 13 | Clean |
| NAVAL BASE VENTURA COUNTY, POINT MUGU | POINT MUGU, CA | 5,700 | 14 | — |
| KEYES COMMUNITY SERVICES DIST. | KEYES, CA | 5,672 | 122 | Clean |
| TAHOE CITY PUD - MAIN | TAHOE CITY, CA | 5,661 | 14 | Detected |
| SERRANO WATER DISTRICT | VILLA PARK, CA | 5,659 | 8 | Detected |
| GOLDEN STATE WATER CO - ARDEN WATER SERV | RANCHO CORDOVA, CA | 5,658 | 6 | Clean |
| CAL AM - MEADOWBROOK | SACRAMENTO, CA | 5,656 | 14 | Detected |
| CALISTOGA, CITY OF | CALISTOGA, CA | 5,610 | 32 | Detected |
| CAMP FRESNO WATER SYSTEM | FRESNO, CA | 5,600 | 59 | — |
| BEAR VALLEY CSD | TEHACHAPI, CA | 5,592 | 25 | Detected |
| CDCR CALIFORNIA HEALTH CARE FACILITY | STOCKTON, CA | 5,551 | 6 | — |
| CITY OF WILLIAMS | WILLIAMS, CA | 5,538 | 6 | Detected |
| CAMBRIA COMM SERVICES DIST | CAMBRIA, CA | 5,532 | 22 | Clean |
| PALM RANCH IRRIGATION DIST. | QUARTZ HILL, CA | 5,507 | 3 | Detected |
| RIVERSTONE/ROOTCREEK WATER DISTRICT | FRESNO, CA | 5,507 | 2 | — |
| HILMAR COUNTY WATER DISTRICT | HILMAR, CA | 5,504 | 16 | Clean |
| MAYWOOD MUTUAL WATER CO. #1 | HUNTINGTON PARK, CA | 5,500 | 8 | Detected |
| MILLVIEW COUNTY WATER DISTRICT | UKIAH, CA | 5,500 | 6 | Clean |
| TUD - COLUMBIA WATER SYSTEM | SONORA, CA | 5,463 | 2 | Clean |
| ST. HELENA, CITY OF | ST. HELENA, CA | 5,386 | 23 | Detected |
| LA HABRA HEIGHTS CWD | LA HABRA HEIGHTS, CA | 5,325 | 0 | Detected |
| YOSEMITE SPRING PARK UTIL CO | COARSEGOLD, CA | 5,300 | 86 | Detected |
| CWSC SALINAS HILLS | SAN JOSE, CA | 5,293 | 6 | Detected |
| RUNNING SPRINGS WATER DISTRICT | RUNNING SPRINGS, CA | 5,268 | 12 | Detected |
| SUBURBAN WATER SYSTEMS-GLENDORA | COVINA, CA | 5,249 | 2 | Clean |
| VALLEY AUTO WATER | ANZA, CA | 5,215 | 3 | — |
| REDWOOD VALLEY COUNTY WATER DISTRICT | UKIAH, CA | 5,200 | 12 | Clean |
| CCWD - COPPER COVE | SAN ANDREAS, CA | 5,187 | 6 | Clean |
| CITY OF BUELLTON WATER DIVISION | BUELLTON, CA | 5,161 | 13 | Detected |
| WASCO ST. PRISON RECEPTION CTR | WASCO, CA | 5,124 | 8 | Detected |
| CALIFORNIA STATE PRISON - SOLANO | VACAVILLE, CA | 5,100 | 10 | Detected |
| DENAIR COMMUNITY SERVICES DISTRICT | DENAIR, CA | 5,090 | 25 | Clean |
| SARDINE LAKE RESORT | SIERRA CITY, CA | 5,040 | 14 | — |
| JOE'S TRAVEL PLAZA (EH) | WESTLEY, CA | 5,026 | 18 | Detected |
| WILLOW SPRINGS RACEWAY | ROSAMOND, CA | 5,022 | 19 | — |
| CITY OF JACKSON | JACKSON, CA | 5,019 | 23 | Clean |
| KERN VALLEY STATE PRISON | DELANO, CA | 5,000 | 50 | Clean |
| FAMOSO RACEWAY, SMOKERS INC. | BAKERSFIELD, CA | 5,000 | 16 | — |
| PLEASANT VALLEY MUTUAL WATER CO | CAMARILLO, CA | 5,000 | 9 | Detected |
| CITY OF GRASS VALLEY | GRASS VALLEY, CA | 4,947 | 4 | Clean |
| AWA, TANNER | SUTTER CREEK, CA | 4,940 | 16 | Clean |
| STALLION SPRINGS CSD | TEHACHAPI, CA | 4,910 | 31 | Detected |
| LA CUMBRE MUTUAL WATER CO | SANTA BARBARA, CA | 4,861 | 7 | Detected |
| DEL PASO MANOR COUNTY WATER DI | SACRAMENTO, CA | 4,854 | 5 | Clean |