Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| TESORO VIEJO MASTER MWC, INC. | SAN JOSE, CA | 3,885 | 0 | — |
| TREASURE ISLAND | BURLINGAME, CA | 3,864 | 6 | — |
| WOODLANDS DEVELOPMENT | ARROYO GRANDE, CA | 3,862 | 3 | — |
| CDCR-HIGH DESERT STATE PRISON | SUSANVILLE, CA | 3,857 | 20 | Clean |
| ANGELS, CITY OF | ANGELS CAMP, CA | 3,836 | 25 | Clean |
| GILBERT STREET COMPLEX | SAN BERNARDINO, CA | 3,833 | 4 | — |
| SO. CAL. EDISON CO.-SANTA CATALINA | AVALON, CA | 3,822 | 5 | Detected |
| BISHOP, CITY OF | BISHOP, CA | 3,819 | 13 | Clean |
| SAN JOAQUIN COUNTY-MOKELUMNE ACRES | STOCKTON, CA | 3,802 | 0 | Detected |
| WILLOW COUNTY WATER DISTRICT | UKIAH, CA | 3,797 | 7 | Clean |
| FORESTVILLE WATER DISTRICT | FORESTVILLE, CA | 3,788 | 2 | — |
| AMERICAN VALLEY CSD | QUINCY, CA | 3,778 | 15 | Detected |
| IDYLLWILD WATER DISTRICT | IDYLLWILD, CA | 3,762 | 12 | — |
| HUNTER HILL SAFETY ROADSIDE REST AREA | FAIRFIELD, CA | 3,707 | 10 | — |
| CAL AM - OAKHURST | SACRAMENTO, CA | 3,693 | 231 | Detected |
| MT. SHASTA, CITY OF | MT. SHASTA, CA | 3,642 | 36 | Clean |
| BROOKTRAILS TOWNSHIP CSD | WILLITS, CA | 3,632 | 7 | Clean |
| GROSSO KRESSER WINERY | LOS ANGELES, CA | 3,606 | 0 | — |
| MISSION HILLS CSD | LOMPOC, CA | 3,600 | 6 | Detected |
| ESPARTO C.S.D. | ESPARTO, CA | 3,574 | 13 | — |
| LOCKEFORD COMMUNITY SERV. DIST. | LOCKEFORD, CA | 3,572 | 20 | — |
| CDCR - SIERRA CONSERVATION CENTER | JAMESTOWN, CA | 3,571 | 30 | — |
| BANDY CANYON RANCH CORP | ESCONDIDO, CA | 3,564 | 0 | — |
| HOPE VALLEY CG | SPARKS, CA | 3,560 | 2 | — |
| JACKSON VALLEY IRRIGATION DISTRICT | IONE, CA | 3,553 | 66 | Clean |
| COBB AREA COUNTY WATER DISTRICT | COBB, CA | 3,515 | 12 | — |
| CSP-SALT POINT STATE PARK | MENDOCINO, CA | 3,513 | 1 | — |
| CSP-FORT ROSS STATE PARK | MENDOCINO, CA | 3,501 | 17 | — |
| BEAR VALLEY MOUNTAIN RESORT | BEAR VALLEY, CA | 3,500 | 0 | — |
| YOSEMITE NPS-MARIPOSA GROVE | YOSEMITE NP, CA | 3,500 | 0 | — |
| SHADY COVE | FAWNSKIN, CA | 3,500 | 0 | — |
| PRESIDIO OF SAN FRANCISCO | SAN FRANCISCO, CA | 3,500 | 14 | Detected |
| CALTRANS-LAKEHEAD SRRA | REDDING, CA | 3,500 | 10 | — |
| MT. SHASTA SKI PARK | MT. SHASTA, CA | 3,500 | 2 | — |
| EAST ORANGE COUNTY WD - RZ | ORANGE, CA | 3,464 | 3 | — |
| BORREGO WD | BORREGO SPRINGS, CA | 3,429 | 12 | Detected |
| CITY OF BRISBANE | BRISBANE, CA | 3,402 | 17 | — |
| GROVELAND COMMUNITY SERV DIST | GROVELAND, CA | 3,400 | 18 | Detected |
| BOX SPRINGS MUTUAL WC | MORENO VALLEY, CA | 3,382 | 16 | — |
| TAHOE CITY PUD - TAHOE SWISS VILLAGE | TAHOE CITY, CA | 3,363 | 12 | — |
| RIO ALTO WATER DISTRICT | COTTONWOOD, CA | 3,329 | 8 | — |
| FOLSOM, CITY OF - ASHLAND | FOLSOM, CA | 3,317 | 0 | Clean |
| COTTONWOOD WATER DISTRICT | COTTONWOOD, CA | 3,316 | 9 | Clean |
| SAN BENITO HIGH SCHOOL | HOLLISTER, CA | 3,310 | 18 | Detected |
| SOUTH SHORE RECREATION AREA | SOUTH LAKE TAHOE, CA | 3,300 | 50 | Clean |
| RIO DELL, CITY OF | RIO DELL, CA | 3,300 | 6 | Clean |
| GIBSON RANCH COUNTY PARK | SACRAMENTO, CA | 3,300 | 6 | — |
| LUKINS BROTHERS WATER COMPANY | SOUTH LAKE TAHOE, CA | 3,277 | 8 | — |
| RINCON DEL DIABLO MWD (ID-A) | ESCONDIDO, CA | 3,275 | 2 | — |
| LAKE DON PEDRO CSD | LA GRANGE, CA | 3,240 | 58 | — |