Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| LAS FLORES WATER CO. | ALTADENA, CA | 4,847 | 14 | Detected |
| BLUE LAKE SPRINGS MUT WTR | ARNOLD, CA | 4,841 | 6 | Detected |
| LOS ANGELES CWWD 37-ACTON | ALHAMBRA, CA | 4,805 | 0 | Clean |
| CALIPATRIA STATE PRISON | IMPERIAL, CA | 4,800 | 10 | Detected |
| UNION PUBLIC UTILITY DISTRICT | MURPHYS, CA | 4,774 | 37 | Detected |
| LAKEPORT, CITY OF | LAKEPORT, CA | 4,762 | 9 | Detected |
| MOJAVE PUD | MOJAVE, CA | 4,699 | 83 | Detected |
| CAL TRANS - GAVIOTA RSR | SAN LUIS OBISPO, CA | 4,690 | 6 | — |
| GOLDEN STATE WATER CO.-CLEARLAKE SYSTEM | RANCHO CORDOVA, CA | 4,644 | 2 | Detected |
| VALLEY VIEW MUTUAL WATER CO. | BALDWIN PARK, CA | 4,613 | 5 | Clean |
| COACHELLA VWD: I.D. NO. 8 | PALM DESERT, CA | 4,600 | 1 | Clean |
| IVANHOE PUBLIC UTILITY DIST | IVANHOE, CA | 4,580 | 22 | Clean |
| CHANNEL ISLANDS BEACH CSD | OXNARD, CA | 4,560 | 0 | Detected |
| CAL AM - BASS LAKE | SACRAMENTO, CA | 4,527 | 8 | Detected |
| GOLDEN STATE WATER COMPANY - NIPOMO | RANCHO CORDOVA, CA | 4,506 | 0 | Detected |
| PEPPERY BAR AND GRILL, THE | SONORA, CA | 4,500 | 4 | — |
| NORTHSTAR CSD - MARTIS VALLEY | TRUCKEE, CA | 4,493 | 0 | — |
| PALOMAR OBSERVATORY | PALOMAR MOUNTAIN, CA | 4,416 | 21 | — |
| DEPARTMENT OF TRANSPORTATION | STOCKTON, CA | 4,375 | 17 | — |
| SUBURBAN WATER SYSTEMS - SATIVA | COVINA, CA | 4,363 | 34 | Clean |
| MT. KONOCTI MUTUAL WATER COMPANY | KELSEYVILLE, CA | 4,360 | 14 | Detected |
| SLVWD - FELTON WATER SYSTEM | BOULDER CREEK, CA | 4,340 | 19 | Clean |
| CALIFORNIA REHABILITATION CENTER - NORCO | NORCO, CA | 4,300 | 69 | Detected |
| CORRECTIONAL TRAINING FACILITY - SOLEDAD | SOLEDAD, CA | 4,269 | 32 | Detected |
| COMMERCE-CITY, WATER DEPT. | SAN JOSE, CA | 4,205 | 1 | Detected |
| MEINERS OAKS CWD | OJAI, CA | 4,200 | 23 | Detected |
| CAL AM - ARDEN | SACRAMENTO, CA | 4,191 | 2 | Detected |
| MEADOW VISTA CWD | MEADOW VISTA, CA | 4,183 | 0 | Clean |
| GOLDEN STATE WATER CO - WRIGHTWOOD | APPLE VALLEY, CA | 4,177 | 4 | Detected |
| PLANADA CSD | PLANADA, CA | 4,164 | 14 | Detected |
| CENTERVILLE C.S.D. | REDDING, CA | 4,151 | 8 | Clean |
| RUSSIAN RIVER COUNTY WATER DISTRICT | FORESTVILLE, CA | 4,150 | 13 | Clean |
| ARMONA COMMUNITY SERVICES DIST | ARMONA, CA | 4,143 | 292 | Clean |
| CITY OF WHEATLAND | WHEATLAND, CA | 4,124 | 9 | Detected |
| KELSEYVILLE CO WATERWORKS DISTRICT 3 | LAKEPORT, CA | 4,102 | 0 | Clean |
| CENTINELA STATE PRISON | IMPERIAL, CA | 4,100 | 57 | Detected |
| ATASCADERO STATE HOSPITAL | ATASCADERO, CA | 4,100 | 6 | Detected |
| CHUCKAWALLA VALLEY STATE PRISON | BLYTHE, CA | 4,090 | 24 | Detected |
| SAN JOAQUIN, CITY OF | SAN JOAQUIN, CA | 4,060 | 39 | Detected |
| LAKE COUNTY CSA 21 - NORTH LAKEPORT | LAKEPORT, CA | 4,046 | 5 | — |
| FARM MUTUAL W.C. (THE) | WILDOMAR, CA | 4,026 | 30 | Detected |
| CAMP FAR WEST RESORT | TROWBRIDGE, CA | 4,012 | 24 | — |
| SHEEP CREEK WATER COMPANY | PHELAN, CA | 4,002 | 5 | Detected |
| YOSEMITE NPS-GLACIER POINT | YOSEMITE NP, CA | 4,000 | 5 | — |
| MATAGUAY SCOUT RESERVATION | SAN DIEGO, CA | 4,000 | 35 | — |
| WEAVERVILLE C.S.D. | WEAVERVILLE, CA | 3,975 | 6 | Detected |
| WARNER SPRINGS RANCH RESORT LLC | SAN DIEGO, CA | 3,972 | 40 | — |
| JOINT REGIONAL WATER SUPPLY SYSTEM | LAGUNA BEACH, CA | 3,947 | 0 | — |
| DEL MAR, CITY OF | DEL MAR, CA | 3,919 | 10 | Detected |
| BIGHORN - DESERT VIEW WATER AGENCY | YUCCA VALLEY, CA | 3,916 | 15 | — |