Public Water Systems
7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| REDDING TRAVEL CENTER | WESTLAKE, CA | 120 | 7 | — |
| AMBERWOOD ESTATES, LLC | STOCKTON, CA | 120 | 15 | — |
| PEDRICK PRODUCE | DIXON, CA | 120 | 11 | — |
| TRADITIONAL MEDICINALS, INC. | SEBASTOPOL, CA | 120 | 13 | — |
| FISHERMAN'S BEND MHP | GUSTINE, CA | 120 | 14 | — |
| KIERNAN BUSINESS CENTER | MODESTO, CA | 120 | 8 | — |
| NUESTRO SCHOOL | LIVE OAK, CA | 120 | 39 | — |
| CAL FIRE-TRINITY RIVER CONSERVATION CAMP | LEWISTON, CA | 120 | 6 | — |
| VENTURA COASTAL, LLC - VISALIA DIVISION | TIPTON, CA | 120 | 28 | — |
| JIREH PACKING COMPANY-ORANGE COVE | ORANGE COVE, CA | 120 | 164 | — |
| FOXFIELD RIDING SCHOOL | WESTLAKE VILLAGE, CA | 120 | 0 | — |
| ROAD TRIP BAR & GRILL | CAPAY, CA | 120 | 17 | — |
| FOREST RANCH MUTUAL WATER SYSTEM | FOREST RANCH, CA | 119 | 32 | — |
| KINGS CANYON HIGH SCHOOL | REEDLEY, CA | 119 | 30 | — |
| DUNE 3 MUTUAL WATER COMPANY, LLC | MORRO BAY, CA | 119 | 21 | — |
| BIG SUR BAZAAR WS | BIG SUR, CA | 119 | 35 | — |
| LEWIS CELLARS | NAPA, CA | 119 | 15 | — |
| PAGE AVENUE MUTUAL WATER COMPANY | FULLERTON, CA | 119 | 24 | — |
| SAN ANTONIO CANYON MSC | MT. BALDY, CA | 119 | 5 | — |
| SPRING CREEK ESTATES PWS | STOCKTON, CA | 119 | 10 | — |
| CITY OF MODESTO - CENTRAL TURLOCK | MODESTO, CA | 119 | 6 | — |
| MENF-LETTS LAKE CG | WILLOWS, CA | 118 | 5 | — |
| BUHACH PRESCHOOL (KINDERCARE) | ATWATER, CA | 118 | 36 | — |
| ST FRANCIS TRACT WATER SYSTEM | FREEDOM, CA | 118 | 20 | — |
| THE FRUIT YARD RESTAURANT | MODESTO, CA | 118 | 9 | — |
| REDCREST WATER WORKS | WHITETHORN, CA | 116 | 153 | — |
| USFS-MONTE CRISTO CAMP T-4 | ARCADIA, CA | 116 | 9 | — |
| ISOT COMMUNITY WATER SYSTEM | CANBY, CA | 116 | 2 | — |
| HIDDEN CANYON RANCH MWC | SALINAS, CA | 116 | 28 | — |
| AIRPORT PLANET WATER | REDDING, CA | 116 | 11 | — |
| HESSEL CHURCH | SEBASTOPOL, CA | 116 | 7 | — |
| DEL ORO WC - LARKSPUR MEADOWS | CHICO, CA | 116 | 11 | — |
| BLACK CHASM CAVERN | ANGELS CAMP, CA | 115 | 13 | — |
| EBRPD ALHAMBRA | OAKLAND, CA | 115 | 0 | — |
| GERLE CREEK SUMMER HOMES | SACRAMENTO, CA | 115 | 12 | — |
| FCSA 14 - BELMONT MANOR | FRESNO, CA | 115 | 5 | — |
| H AND R FACILITIES | SANGER, CA | 115 | 2 | — |
| CRYSTAL GEYSER BOTTLING PLANT | OLANCHA, CA | 115 | 32 | — |
| TEHACHAPI CEMENT LLC | TEHACHAPI, CA | 115 | 63 | — |
| COARSEGOLD MARKET | COARSEGOLD, CA | 115 | 13 | — |
| SELECT HARVEST USA, LLC | TURLOCK, CA | 115 | 0 | — |
| HUNEWILL GUEST RANCH | BRIDGEPORT, CA | 115 | 24 | — |
| ANZA PETROLEUM INC | CARLSBAD, CA | 115 | 12 | — |
| JAHANT WOODS CELLARS | ACAMPO, CA | 115 | 0 | — |
| BOBCAT SPRINGS MUTUAL WATER COMPANY | BUELLTON, CA | 115 | 2 | — |
| DOWNTOWN GRATON MUTUAL WATER SYSTEM | GRATON, CA | 115 | 6 | — |
| BURNT RANCH ESTATES | BURNT RANCH, CA | 115 | 11 | — |
| SIERRA VIEW JR ACADEMY | EXETER, CA | 115 | 91 | — |
| 49ER TRAILER RANCH | COLUMBIA, CA | 115 | 8 | — |
| SILVERFORK MUTUAL WATER | NAPA, CA | 114 | 28 | — |