Public Water Systems
7,249 active water systems in CA.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| LOS ANGELES-CITY, DEPT. OF WATER & POWER | LOS ANGELES, CA | 3,875,566 | 33 | Detected |
| EAST BAY MUD | OAKLAND, CA | 1,442,800 | 14 | Detected |
| SAN DIEGO, CITY OF | SAN DIEGO, CA | 1,385,379 | 33 | Detected |
| SAN JOSE WATER | SAN JOSE, CA | 1,039,920 | 14 | Detected |
| SFPUC CITY DISTRIBUTION DIVISION | BURLINGAME, CA | 848,019 | 0 | Clean |
| EASTERN MUNICIPAL WD | PERRIS, CA | 666,581 | 6 | Detected |
| CITY OF FRESNO | FRESNO, CA | 545,716 | 33 | Detected |
| CITY OF SACRAMENTO MAIN | SACRAMENTO, CA | 520,407 | 4 | Detected |
| LONG BEACH UTILITIES DEPARTMENT | LONG BEACH, CA | 466,772 | 6 | Detected |
| IRVINE RANCH WATER DISTRICT | IRVINE, CA | 444,800 | 12 | Detected |
| CITY OF ANAHEIM | ANAHEIM, CA | 348,593 | 5 | Detected |
| ALAMEDA COUNTY WATER DISTRICT | FREMONT, CA | 344,000 | 9 | Clean |
| CITY OF SANTA ANA | SANTA ANA, CA | 310,539 | 20 | Detected |
| RIVERSIDE, CITY OF | RIVERSIDE, CA | 298,398 | 1 | Detected |
| SANTA CLARITA VALLEY WATER AGENCY | NEWHALL, CA | 294,090 | 4 | Detected |
| GSWC - SOUTHWEST | HAWTHORNE, CA | 277,740 | 11 | Detected |
| HELIX WATER DISTRICT | LA MESA, CA | 277,668 | 0 | Detected |
| COACHELLA VWD: COVE COMMUNITY | PALM DESERT, CA | 270,000 | 3 | Detected |
| CWS - BAKERSFIELD | SAN JOSE, CA | 267,881 | 12 | Detected |
| SAN GABRIEL VALLEY WATER CO.-EL MONTE | EL MONTE, CA | 248,000 | 13 | Detected |
| OTAY WATER DISTRICT | SPRING VALLEY, CA | 238,008 | 0 | Detected |
| SAN GABRIEL VALLEY WC - FONTANA | FONTANA, CA | 237,700 | 3 | Clean |
| MODESTO, CITY OF | MODESTO, CA | 218,771 | 25 | Detected |
| SAN BERNARDINO CITY | SAN BERNARDINO, CA | 214,665 | 2 | Detected |
| CUCAMONGA VALLEY WATER DISTRICT | RANCHO CUCAMONGA, CA | 211,069 | 5 | Clean |
| LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER | ALHAMBRA, CA | 208,129 | 11 | Detected |
| CITY OF HUNTINGTON BEACH | HUNTINGTON BEACH, CA | 201,000 | 9 | Detected |
| OXNARD WATER DEPT | OXNARD, CA | 200,232 | 14 | Detected |
| CONTRA COSTA WATER DISTRICT | CONCORD, CA | 198,000 | 4 | Clean |
| SACRAMENTO SUBURBAN WATER DISTRICT | SACRAMENTO, CA | 194,444 | 23 | Detected |
| CITY OF STOCKTON | STOCKTON, CA | 191,302 | 24 | Detected |
| SWEETWATER AUTHORITY | CHULA VISTA, CA | 191,282 | 15 | Detected |
| GLENDALE-CITY, WATER DEPT. | GLENDALE, CA | 188,784 | 2 | Detected |
| MARIN MUNICIPAL WATER DISTRICT | CORTE MADERA, CA | 186,895 | 1 | Clean |
| ONTARIO MUNICIPAL UTILITIES COMPANY | ONTARIO, CA | 185,010 | 9 | Detected |
| SCWA - LAGUNA/VINEYARD | SACRAMENTO, CA | 184,896 | 2 | Detected |
| SAN FRANCISCO INTERNATIONAL AIRPORT | SAN FRANCISCO, CA | 183,386 | 11 | Clean |
| CALIFORNIA WATER SERVICE - STOCKTON | SAN JOSE, CA | 176,266 | 2 | Detected |
| SANTA ROSA, CITY OF | SANTA ROSA, CA | 175,396 | 4 | Detected |
| CITY OF GARDEN GROVE | GARDEN GROVE, CA | 174,226 | 0 | Detected |
| OCEANSIDE, CITY OF | OCEANSIDE, CA | 171,483 | 12 | Detected |
| MOULTON NIGUEL WATER DISTRICT | LAGUNA HILLS, CA | 170,236 | 0 | Detected |
| ELSINORE VALLEY MWD | LAKE ELSINORE, CA | 169,455 | 22 | Detected |
| SUBURBAN WATER SYSTEMS-SAN JOSE | COVINA, CA | 168,843 | 10 | Detected |
| CORONA, CITY OF | CORONA, CA | 168,575 | 36 | Detected |
| SANTA MARGARITA WATER DISTRICT | RANCHO SANTA MARGARITA, CA | 168,289 | 2 | Detected |
| PASADENA WATER AND POWER | PASADENA, CA | 164,344 | 8 | Detected |
| CITY OF HAYWARD | HAYWARD, CA | 162,954 | 6 | Clean |
| BAKERSFIELD, CITY OF | SAN JOSE, CA | 160,144 | 9 | Detected |
| CITY OF SUNNYVALE | SUNNYVALE, CA | 157,566 | 145 | Clean |
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