PFAS in California Water
Based on EPA UCMR 5 testing of 452 public water systems in California.
452
Systems Tested
452
With PFAS Detected
164
Above EPA Limits
36%
Exceed MCL
Most Commonly Detected PFAS in California
Systems with detections · EPA UCMR 5 (2023–2025)
lithium 355 systems
PFHxS 149 systems
PFOS 145 systems
PFPeA 138 systems
PFHxA 128 systems
PFOA 122 systems
Check your California ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in California (452)
Click any row to see ZIP-level details| Water System | PWSID | PFAS Detected | Above MCL | Risk |
|---|---|---|---|---|
| POTRERO ELEMENTARY SCHOOL Groundwater | CA3700963 | 9 | 4 | High Risk |
| RUNNING SPRINGS WATER DISTRICT Groundwater | CA3610062 | 11 | 3 | High Risk |
| CITY OF FRESNO Groundwater | CA1010007 | 10 | 3 | High Risk |
| CITY OF ATWATER Groundwater | CA2410001 | 10 | 3 | High Risk |
| RIVERSIDE HIGHLAND WATER COMPANY Groundwater | CA3610057 | 10 | 3 | High Risk |
| CITY OF PLEASANTON Groundwater | CA0110008 | 9 | 3 | High Risk |
| LIBERTY UTILITIES - BELLFLOWER-NORWALK Groundwater | CA1910211 | 9 | 3 | High Risk |
| CITY OF SACRAMENTO MAIN Groundwater | CA3410020 | 9 | 3 | High Risk |
| CITY OF ANAHEIM Surface Water | CA3010001 | 8 | 3 | High Risk |
| CITY OF ORANGE Groundwater | CA3010027 | 8 | 3 | High Risk |
| NORCO, CITY OF Groundwater | CA3310025 | 8 | 3 | High Risk |
| BIG BEAR CITY CSD Groundwater | CA3610008 | 8 | 3 | High Risk |
| CRESTLINE VILLAGE CWD - DIVISION 10 Groundwater | CA3610015 | 8 | 3 | High Risk |
| HESPERIA WD Groundwater | CA3610024 | 8 | 3 | High Risk |
| HELENDALE COMMUNITY SERVICE DISTRICT Groundwater | CA3610112 | 8 | 3 | High Risk |
| CAL-WATER SERVICE CO.-CHICO Groundwater | CA0410002 | 7 | 3 | High Risk |
| RUBIO CANON LAND & WATER ASSOCIATION Groundwater | CA1910140 | 7 | 3 | High Risk |
| YOSEMITE SPRING PARK UTIL CO Groundwater | CA2010005 | 7 | 3 | High Risk |
| Cal Am - Suburban Rosemont Groundwater | CA3410010 | 7 | 3 | High Risk |
| CITY OF MERCED Groundwater | CA2410009 | 4 | 3 | High Risk |
| CITY OF CLOVIS Groundwater | CA1010003 | 10 | 2 | High Risk |
| SOUTH TAHOE PUD - MAIN Groundwater | CA0910002 | 9 | 2 | High Risk |
| SANTA CLARITA VALLEY W.A.-SANTA CLARITA Groundwater | CA1910017 | 9 | 2 | High Risk |
| PICO RIVERA - CITY, WATER DEPT. Groundwater | CA1910042 | 9 | 2 | High Risk |
| GLENDALE-CITY, WATER DEPT. Surface Water | CA1910043 | 9 | 2 | High Risk |
| PICO WD Groundwater | CA1910125 | 9 | 2 | High Risk |
| SANTA CLARITA VALLEY W.A.-VALENCIA DIVIS Groundwater | CA1910240 | 9 | 2 | High Risk |
| UKIAH, CITY OF Groundwater | CA2310003 | 9 | 2 | High Risk |
| CAL AM WATER COMPANY - MONTEREY Groundwater | CA2710004 | 9 | 2 | High Risk |
| CITY OF FULLERTON Groundwater | CA3010010 | 9 | 2 | High Risk |
| RANCHO CALIFORNIA WATER DISTRICT Groundwater | CA3310038 | 9 | 2 | High Risk |
| SWEETWATER AUTHORITY Groundwater | CA3710025 | 9 | 2 | High Risk |
| LOS OSOS COMMUNITY SERVICES DISTRICT Groundwater | CA4010016 | 9 | 2 | High Risk |
| PORTERVILLE, CITY OF Groundwater | CA5410010 | 9 | 2 | High Risk |
| PINEDALE COUNTY WATER DISTRICT Groundwater | CA1010026 | 8 | 2 | High Risk |
| CWS - BAKERSFIELD Groundwater | CA1510003 | 8 | 2 | High Risk |
| DOWNEY - CITY, WATER DEPT. Groundwater | CA1910034 | 8 | 2 | High Risk |
| MONTEBELLO LAND & WATER CO. Groundwater | CA1910091 | 8 | 2 | High Risk |
| CITY OF BELL GARDENS Surface Water | CA1910108 | 8 | 2 | High Risk |
| LA HABRA HEIGHTS CWD Surface Water | CA1910218 | 8 | 2 | High Risk |
| GOLDEN STATE WC - PLACENTIA/YORBA LINDA Groundwater | CA3010035 | 8 | 2 | High Risk |
| LAKE ARROWHEAD CSD Surface Water | CA3610005 | 8 | 2 | High Risk |
| EAST VALLEY WATER DISTRICT Groundwater | CA3610064 | 8 | 2 | High Risk |
| CITY OF GILROY Groundwater | CA4310004 | 8 | 2 | High Risk |
| CITY OF REDDING Groundwater | CA4510005 | 8 | 2 | High Risk |
| MODESTO, CITY OF Groundwater | CA5010010 | 8 | 2 | High Risk |
| CERES, CITY OF Groundwater | CA5010028 | 8 | 2 | High Risk |
| CALIFORNIA WATER SERVICE - LIVERMORE MX | CA0110003 | 7 | 2 | High Risk |
| GOLDEN HILLS CSD Groundwater | CA1510045 | 7 | 2 | High Risk |
| GSWC - CLAREMONT Groundwater | CA1910024 | 7 | 2 | High Risk |
| SUBURBAN WATER SYSTEMS-LA MIRADA Groundwater | CA1910059 | 7 | 2 | High Risk |
| ORCHARD DALE WATER DISTRICT Groundwater | CA1910101 | 7 | 2 | High Risk |
| POMONA - CITY, WATER DEPT. Groundwater | CA1910126 | 7 | 2 | High Risk |
| SOUTH MONTEBELLO IRRIGATION DIST. Groundwater | CA1910153 | 7 | 2 | High Risk |
| VALENCIA HEIGHTS WATER CO. Surface Water | CA1910163 | 7 | 2 | High Risk |
| CITY OF GARDEN GROVE Groundwater | CA3010062 | 7 | 2 | High Risk |
| SCWA - LAGUNA/VINEYARD Groundwater | CA3410029 | 7 | 2 | High Risk |
| LODI, CITY OF Groundwater | CA3910004 | 7 | 2 | High Risk |
| ARROYO GRANDE, WATER DEPARTMENT Groundwater | CA4010001 | 7 | 2 | High Risk |
| WATSONVILLE, CITY OF Groundwater | CA4410011 | 7 | 2 | High Risk |
| VALLEY OF THE MOON WATER DISTRICT Groundwater | CA4910013 | 7 | 2 | High Risk |
| CITY OF GRIDLEY Groundwater | CA0410004 | 6 | 2 | High Risk |
| MONROVIA-CITY, WATER DEPT. Groundwater | CA1910090 | 6 | 2 | High Risk |
| SOUTH GATE-CITY, WATER DEPT. Groundwater | CA1910152 | 6 | 2 | High Risk |
| Suburban Water Systems - Whittier Groundwater | CA1910174 | 6 | 2 | High Risk |
| NORWALK - CITY, WATER DEPT. Surface Water | CA1910191 | 6 | 2 | High Risk |
| SANTA FE SPRINGS - CITY, WATER DEPT. Groundwater | CA1910245 | 6 | 2 | High Risk |
| GOLDEN STATE WC - WEST ORANGE COUNTY Surface Water | CA3010022 | 6 | 2 | High Risk |
| CITY OF SANTA ANA Groundwater | CA3010038 | 6 | 2 | High Risk |
| NUEVO WATER COMPANY Surface Water | CA3310026 | 6 | 2 | High Risk |
| FARM MUTUAL W.C. (THE) Surface Water | CA3310046 | 6 | 2 | High Risk |
| CALAM - PARKWAY Groundwater | CA3410017 | 6 | 2 | High Risk |
| FLORIN COUNTY WATER DISTRICT Groundwater | CA3410033 | 6 | 2 | High Risk |
| COLTON, CITY OF Groundwater | CA3610014 | 6 | 2 | High Risk |
| ONTARIO MUNICIPAL UTILITIES COMPANY Groundwater | CA3610034 | 6 | 2 | High Risk |
| SAN JOAQUIN COUNTY-MOKELUMNE ACRES Groundwater | CA3910017 | 6 | 2 | High Risk |
| ATASCADERO MUTUAL WATER CO Groundwater | CA4010002 | 6 | 2 | High Risk |
| GUADALUPE VALLEY MID Surface Water | CA4110005 | 6 | 2 | High Risk |
| CWS - VISALIA Groundwater | CA5410016 | 6 | 2 | High Risk |
| PLEASANT VALLEY MUTUAL WATER CO MX | CA5610008 | 6 | 2 | High Risk |
| LYNWOOD-CITY, WATER DEPT. Groundwater | CA1910079 | 5 | 2 | High Risk |
| CALAM - ARDEN Groundwater | CA3410045 | 5 | 2 | High Risk |
| BIG BEAR LAKE DWP - BIG BEAR SYSTEM Groundwater | CA3610044 | 5 | 2 | High Risk |
| ATASCADERO STATE HOSPITAL Groundwater | CA4010832 | 5 | 2 | High Risk |
| CITY OF VACAVILLE Groundwater | CA4810008 | 5 | 2 | High Risk |
| CITY OF SANGER Groundwater | CA1010029 | 4 | 2 | High Risk |
| PETER PITCHESS HONOR RANCHO DETN. CTR Groundwater | CA1900046 | 4 | 2 | High Risk |
| BELLFLOWER MUNICIPAL WATER SYSTEM Surface Water | CA1910018 | 4 | 2 | High Risk |
| COMPTON-CITY, WATER DEPT. Groundwater | CA1910026 | 4 | 2 | High Risk |
| HUNTINGTON PARK-CITY, WATER DEPT. Surface Water | CA1910049 | 4 | 2 | High Risk |
| MAYWOOD MUTUAL WATER CO. #3 Groundwater | CA1910086 | 4 | 2 | High Risk |
| TRACT 180 MUTUAL WATER CO. Groundwater | CA1910159 | 4 | 2 | High Risk |
| TRACT 349 MUTUAL WATER CO. Groundwater | CA1910160 | 4 | 2 | High Risk |
| LIBERTY UTILITIES - LYNWOOD Groundwater | CA1910161 | 4 | 2 | High Risk |
| CALISTOGA, CITY OF Surface Water | CA2810002 | 4 | 2 | High Risk |
| WESTERN MWD - MURRIETA DIVISION Surface Water | CA3310036 | 4 | 2 | High Risk |
| REDLANDS CITY MUD-WATER DIV Groundwater | CA3610037 | 4 | 2 | High Risk |
| MANTECA, CITY OF Groundwater | CA3910005 | 4 | 2 | High Risk |
| RIPON, CITY OF Groundwater | CA3910007 | 4 | 2 | High Risk |
| LINDSAY, CITY OF Groundwater | CA5410006 | 4 | 2 | High Risk |
| LATON COMMUNITY SERVICES DISTRICT Groundwater | CA1010020 | 3 | 2 | High Risk |
| RANCHO LOS AMIGOS HOSPITAL Groundwater | CA1900679 | 3 | 2 | High Risk |
| AZUSA LIGHT AND WATER Groundwater | CA1910007 | 3 | 2 | High Risk |
| GSWC-SOUTH ARCADIA Groundwater | CA1910212 | 3 | 2 | High Risk |
| NORTHROP GRUMMAN CORP. Groundwater | CA1910097 | 8 | 1 | High Risk |
| PASO ROBLES WATER DEPARTMENT Groundwater | CA4010007 | 8 | 1 | High Risk |
| GSWC - BELL, BELL GARDENS Surface Water | CA1910011 | 7 | 1 | High Risk |
| CRESCENTA VALLEY CWD Groundwater | CA1910028 | 7 | 1 | High Risk |
| COMMERCE-CITY, WATER DEPT. Surface Water | CA1910050 | 7 | 1 | High Risk |
| SANTA MONICA-CITY, WATER DIVISION Groundwater | CA1910146 | 7 | 1 | High Risk |
| RIALTO, CITY OF Groundwater | CA3610038 | 7 | 1 | High Risk |
| CALIFORNIA STATE UNIVERSITY FRESNO Groundwater | CA1010339 | 6 | 1 | High Risk |
| CALIFORNIA WATER SERVICE CO. - ELA Groundwater | CA1910036 | 6 | 1 | High Risk |
| OLYMPIA MOBILODGE Groundwater | CA3410022 | 5 | 1 | High Risk |
| MONTE VISTA CWD Groundwater | CA3610029 | 5 | 1 | High Risk |
| GOLDEN STATE WATER CO - BARSTOW Groundwater | CA3610043 | 5 | 1 | High Risk |
| SAN DIEGUITO WD Surface Water | CA3710021 | 5 | 1 | High Risk |
| GREAT OAKS WC INC Groundwater | CA4310022 | 5 | 1 | High Risk |
| BAKERSFIELD, CITY OF MX | CA1510031 | 4 | 1 | High Risk |
| TRUCKEE-DONNER PUD, MAIN Groundwater | CA2910003 | 4 | 1 | High Risk |
| CITY OF TUSTIN Groundwater | CA3010046 | 4 | 1 | High Risk |
| YUCAIPA VALLEY WATER DISTRICT Groundwater | CA3610055 | 4 | 1 | High Risk |
| LAKESIDE WD Groundwater | CA3710013 | 4 | 1 | High Risk |
| ROHNERT PARK, CITY OF Groundwater | CA4910014 | 4 | 1 | High Risk |
| CITY OF RED BLUFF Groundwater | CA5210004 | 4 | 1 | High Risk |
| LOMITA-CITY, WATER DEPT. Groundwater | CA1910073 | 3 | 1 | High Risk |
| PLANADA CSD Groundwater | CA2410007 | 3 | 1 | High Risk |
| CITY OF BUENA PARK Groundwater | CA3010003 | 3 | 1 | High Risk |
| CITY OF HUNTINGTON BEACH Surface Water | CA3010053 | 3 | 1 | High Risk |
| CITY OF WESTMINSTER Surface Water | CA3010064 | 3 | 1 | High Risk |
| ADELANTO, CITY OF Groundwater | CA3610001 | 3 | 1 | High Risk |
| CITY OF LATHROP Groundwater | CA3910015 | 3 | 1 | High Risk |
| SAN JOSE WATER Groundwater | CA4310011 | 3 | 1 | High Risk |
| SONOMA, CITY OF Groundwater | CA4910012 | 3 | 1 | High Risk |
| CAMROSA WATER DISTRICT Groundwater | CA5610063 | 3 | 1 | High Risk |
| THERMALITO WATER & SEWER DIST Groundwater | CA0410008 | 2 | 1 | High Risk |
| SIERRA TAHOE MAIN LODGE Groundwater | CA0900659 | 2 | 1 | High Risk |
| BEAR VALLEY CSD Groundwater | CA1510038 | 2 | 1 | High Risk |
| CWS - NORTH GARDEN Surface Water | CA1510055 | 2 | 1 | High Risk |
| CITY OF ARCADIA Groundwater | CA1910003 | 2 | 1 | High Risk |
| GSWC - ARTESIA Groundwater | CA1910004 | 2 | 1 | High Risk |
| BELLFLOWER - SOMERSET MWC Groundwater | CA1910013 | 2 | 1 | High Risk |
| CERRITOS - CITY, WATER DEPT. Surface Water | CA1910019 | 2 | 1 | High Risk |
| EL MONTE-CITY, WATER DEPT. Groundwater | CA1910038 | 2 | 1 | High Risk |
| INGLEWOOD- CITY, WATER DEPT. Groundwater | CA1910051 | 2 | 1 | High Risk |
| MAYWOOD MUTUAL WATER CO. #1 Groundwater | CA1910084 | 2 | 1 | High Risk |
| MAYWOOD MUTUAL WATER CO. #2 Groundwater | CA1910085 | 2 | 1 | High Risk |
| GSWC-SAN DIMAS Groundwater | CA1910142 | 2 | 1 | High Risk |
| LAKEWOOD - CITY, WATER DEPT. Groundwater | CA1910239 | 2 | 1 | High Risk |
| DELHI CWD Groundwater | CA2410006 | 2 | 1 | High Risk |
| CITY OF LINCOLN Groundwater | CA3110004 | 2 | 1 | High Risk |
| SCWA - ARDEN PARK VISTA Groundwater | CA3410002 | 2 | 1 | High Risk |
| CALIFORNIA STATE FAIR Groundwater | CA3410026 | 2 | 1 | High Risk |
| SUNNYSLOPE COUNTY WATER DIST Groundwater | CA3510003 | 2 | 1 | High Risk |
| LOMA LINDA UNIVERSITY Groundwater | CA3600152 | 2 | 1 | High Risk |
| WEAVERVILLE C.S.D. Surface Water | CA5310001 | 2 | 1 | High Risk |
| GROVELAND COMMUNITY SERV DIST Surface Water | CA5510009 | 2 | 1 | High Risk |
| CITY OF WHEATLAND Groundwater | CA5810004 | 2 | 1 | High Risk |
| CAL-AM WATER COMPANY - DUARTE Groundwater | CA1910186 | 1 | 1 | High Risk |
| CHOWCHILLA CITY WATER DEPT Groundwater | CA2010001 | 1 | 1 | High Risk |
| CAL AM - MEADOWBROOK Groundwater | CA2410008 | 1 | 1 | High Risk |
| FOLSOM STATE PRISON Surface Water | CA3410032 | 1 | 1 | High Risk |
| CALIFORNIA WATER SERVICE - STOCKTON Groundwater | CA3910001 | 1 | 1 | High Risk |
| CITY OF STOCKTON Groundwater | CA3910012 | 1 | 1 | High Risk |
| PRESIDIO OF SAN FRANCISCO Surface Water | CA3810700 | 7 | 0 | Moderate |
| SUBURBAN WATER SYSTEMS-SAN JOSE Surface Water | CA1910205 | 5 | 0 | Moderate |
| CORONA, CITY OF Groundwater | CA3310037 | 5 | 0 | Moderate |
| SACRAMENTO SUBURBAN WATER DISTRICT Groundwater | CA3410001 | 5 | 0 | Moderate |
| GLEN HELEN WATER SYSTEM Groundwater | CA3600108 | 5 | 0 | Moderate |
| SAN BERNARDINO CITY Groundwater | CA3610039 | 5 | 0 | Moderate |
| GOLDEN STATE WATER COMPANY - LOS OSOS Groundwater | CA4010017 | 5 | 0 | Moderate |
| GSWC - NORWALK Groundwater | CA1910098 | 4 | 0 | Low Level |
| SOUTH MESA WC Groundwater | CA3310017 | 4 | 0 | Low Level |
| PERRIS, CITY OF Surface Water | CA3310029 | 4 | 0 | Low Level |
| RIVERSIDE, CITY OF GU | CA3310031 | 4 | 0 | Low Level |
| WESTERN MWD MX | CA3310049 | 4 | 0 | Low Level |
| HI DESERT WD Groundwater | CA3610073 | 4 | 0 | Low Level |
| CITY OF MORGAN HILL Groundwater | CA4310006 | 4 | 0 | Low Level |
| KONOCTI COUNTY WATER DISTRICT Surface Water | CA1710006 | 3 | 0 | Low Level |
| PALMDALE WATER DIST. Groundwater | CA1910102 | 3 | 0 | Low Level |
| BURBANK-CITY, WATER DEPT. Surface Water | CA1910179 | 3 | 0 | Low Level |
| YORBA LINDA WATER DISTRICT Groundwater | CA3010037 | 3 | 0 | Low Level |
| GOLDEN STATE WC - COWAN HEIGHTS Groundwater | CA3010047 | 3 | 0 | Low Level |
| SERRANO WATER DISTRICT Groundwater | CA3010082 | 3 | 0 | Low Level |
| IRVINE RANCH WATER DISTRICT Surface Water | CA3010092 | 3 | 0 | Low Level |
| RUBIDOUX COMMUNITY SD Groundwater | CA3310044 | 3 | 0 | Low Level |
| RIO LINDA/ELVERTA COMMUNITY WATER DIST Groundwater | CA3410018 | 3 | 0 | Low Level |
| UPLAND, CITY OF Groundwater | CA3610050 | 3 | 0 | Low Level |
| SHEEP CREEK WATER COMPANY Groundwater | CA3610109 | 3 | 0 | Low Level |
| SANTA FE I.D. Surface Water | CA3710023 | 3 | 0 | Low Level |
| CAMP PENDLETON (SOUTH) Groundwater | CA3710702 | 3 | 0 | Low Level |
| TEMPLETON CSD Groundwater | CA4010019 | 3 | 0 | Low Level |
| GOLETA WATER DISTRICT Groundwater | CA4210004 | 3 | 0 | Low Level |
| SCOTTS VALLEY WATER DISTRICT Groundwater | CA4410013 | 3 | 0 | Low Level |
| CITY OF BENICIA Surface Water | CA4810001 | 3 | 0 | Low Level |
| HEALDSBURG, CITY OF GU | CA4910005 | 3 | 0 | Low Level |
| TUD-WARDS FERRY RANCHES Groundwater | CA5500363 | 3 | 0 | Low Level |
| VENTURA WATER DEPARTMENT Surface Water | CA5610017 | 3 | 0 | Low Level |
| CAL-WATER SERVICE CO.-OROVILLE Groundwater | CA0410005 | 2 | 0 | Low Level |
| VAUGHN WC INC Groundwater | CA1510029 | 2 | 0 | Low Level |
| SO. CAL. EDISON CO.-SANTA CATALINA Groundwater | CA1910006 | 2 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO. - DOMINGUEZ Surface Water | CA1910033 | 2 | 0 | Low Level |
| SAN GABRIEL VALLEY WATER CO.-EL MONTE Groundwater | CA1910039 | 2 | 0 | Low Level |
| MONTEREY PARK-CITY, WATER DEPT. Groundwater | CA1910092 | 2 | 0 | Low Level |
| SANTA CLARITA VALLEY W.A.-NEWHALL DIV. MX | CA1910096 | 2 | 0 | Low Level |
| CAL/AM WATER COMPANY - SAN MARINO Surface Water | CA1910139 | 2 | 0 | Low Level |
| ROWLAND WATER DISTRICT Surface Water | CA1910194 | 2 | 0 | Low Level |
| GSWC-SOUTH SAN GABRIEL Surface Water | CA1910223 | 2 | 0 | Low Level |
| BASS LAKE WATER COMPANY Groundwater | CA2010003 | 2 | 0 | Low Level |
| CITY OF ALTURAS Groundwater | CA2510001 | 2 | 0 | Low Level |
| SOUTH COAST WATER DISTRICT Groundwater | CA3010042 | 2 | 0 | Low Level |
| CITY OF FOUNTAIN VALLEY Surface Water | CA3010069 | 2 | 0 | Low Level |
| EL TORO WATER DISTRICT Surface Water | CA3010079 | 2 | 0 | Low Level |
| BANNING, CITY OF Groundwater | CA3310006 | 2 | 0 | Low Level |
| ELSINORE VALLEY MWD MX | CA3310012 | 2 | 0 | Low Level |
| CARMICHAEL WATER DISTRICT Groundwater | CA3410004 | 2 | 0 | Low Level |
| ELK GROVE WATER SERVICE Groundwater | CA3410008 | 2 | 0 | Low Level |
| CALAM - LINCOLN OAKS Groundwater | CA3410013 | 2 | 0 | Low Level |
| GOLDEN STATE WATER CO - WRIGHTWOOD Groundwater | CA3610047 | 2 | 0 | Low Level |
| RINCON DEL DIABLO MWD (ID-1) Surface Water | CA3710018 | 2 | 0 | Low Level |
| PADRE DAM MWD Surface Water | CA3710037 | 2 | 0 | Low Level |
| GOLDEN STATE WATER COMPANY - NIPOMO Groundwater | CA4010018 | 2 | 0 | Low Level |
| SOLVANG WATER DIVISION MX | CA4210013 | 2 | 0 | Low Level |
| SAN LORENZO VALLEY WATER DIST Groundwater | CA4410014 | 2 | 0 | Low Level |
| CITY OF LIVE OAK, CA Groundwater | CA5110001 | 2 | 0 | Low Level |
| CITY OF WINTERS Groundwater | CA5710005 | 2 | 0 | Low Level |
| EAST BAY MUD Surface Water | CA0110005 | 1 | 0 | Low Level |
| KIRKWOOD MEADOWS PUBLIC UTILITY DISTRICT Groundwater | CA0210002 | 1 | 0 | Low Level |
| UNION PUBLIC UTILITY DISTRICT Surface Water | CA0510001 | 1 | 0 | Low Level |
| BLUE LAKE SPRINGS MUT WTR Surface Water | CA0510009 | 1 | 0 | Low Level |
| CITY OF COLUSA Groundwater | CA0610002 | 1 | 0 | Low Level |
| CITY OF WILLIAMS Groundwater | CA0610004 | 1 | 0 | Low Level |
| BRENTWOOD Groundwater | CA0710004 | 1 | 0 | Low Level |
| DIABLO WATER DISTRICT MX | CA0710007 | 1 | 0 | Low Level |
| CITY OF PITTSBURG MX | CA0710008 | 1 | 0 | Low Level |
| TOWN OF DISCOVERY BAY Groundwater | CA0710009 | 1 | 0 | Low Level |
| EL DORADO ID - MAIN Surface Water | CA0910001 | 1 | 0 | Low Level |
| FIREBAUGH CITY Groundwater | CA1010005 | 1 | 0 | Low Level |
| CITY OF FOWLER Groundwater | CA1010006 | 1 | 0 | Low Level |
| SAN JOAQUIN, CITY OF Groundwater | CA1010034 | 1 | 0 | Low Level |
| CITY OF ORLAND Groundwater | CA1110001 | 1 | 0 | Low Level |
| CAL-WATER SERVICE CO.-WILLOWS Groundwater | CA1110003 | 1 | 0 | Low Level |
| HUMBOLDT C.S.D. Groundwater | CA1210009 | 1 | 0 | Low Level |
| IMPERIAL VALLEY COLLEGE Surface Water | CA1300549 | 1 | 0 | Low Level |
| BRAWLEY, CITY OF Surface Water | CA1310001 | 1 | 0 | Low Level |
| CALEXICO, CITY OF Surface Water | CA1310002 | 1 | 0 | Low Level |
| GSWC-CALIPATRIA Surface Water | CA1310003 | 1 | 0 | Low Level |
| EL CENTRO, CITY OF Surface Water | CA1310004 | 1 | 0 | Low Level |
| HOLTVILLE, CITY OF Surface Water | CA1310005 | 1 | 0 | Low Level |
| IMPERIAL, CITY OF Surface Water | CA1310006 | 1 | 0 | Low Level |
| HEBER PUBLIC UTILITY DISTRICT Surface Water | CA1310007 | 1 | 0 | Low Level |
| CALIPATRIA STATE PRISON Surface Water | CA1310800 | 1 | 0 | Low Level |
| CENTINELA STATE PRISON Surface Water | CA1310801 | 1 | 0 | Low Level |
| DELANO, CITY OF Groundwater | CA1510005 | 1 | 0 | Low Level |
| EAST NILES CSD Surface Water | CA1510006 | 1 | 0 | Low Level |
| LAMONT PUBLIC UTILITY DIST Groundwater | CA1510012 | 1 | 0 | Low Level |
| MOJAVE PUD Surface Water | CA1510014 | 1 | 0 | Low Level |
| OILDALE MWC Surface Water | CA1510015 | 1 | 0 | Low Level |
| INDIAN WELLS VALLEY W.D. Groundwater | CA1510017 | 1 | 0 | Low Level |
| ROSAMOND CSD Surface Water | CA1510018 | 1 | 0 | Low Level |
| GREENFIELD COUNTY WD Groundwater | CA1510024 | 1 | 0 | Low Level |
| STALLION SPRINGS CSD Groundwater | CA1510025 | 1 | 0 | Low Level |
| CALIFORNIA CITY, CITY OF Groundwater | CA1510032 | 1 | 0 | Low Level |
| EDWARDS AFB - MAIN BASE MX | CA1510701 | 1 | 0 | Low Level |
| CHINA LAKE NAVAL AIR WEAPONS STATION Groundwater | CA1510703 | 1 | 0 | Low Level |
| CCI - TEHACHAPI Groundwater | CA1510800 | 1 | 0 | Low Level |
| WASCO ST. PRISON RECEPTION CTR Groundwater | CA1510801 | 1 | 0 | Low Level |
| GOLDEN STATE WATER CO.-CLEARLAKE SYSTEM Surface Water | CA1710002 | 1 | 0 | Low Level |
| HIGHLANDS MUTUAL WATER COMPANY Surface Water | CA1710003 | 1 | 0 | Low Level |
| LAKEPORT, CITY OF Surface Water | CA1710004 | 1 | 0 | Low Level |
| LUCERNE WATER CO. - CAL WATER SERVICE Surface Water | CA1710005 | 1 | 0 | Low Level |
| MT. KONOCTI MUTUAL WATER COMPANY Surface Water | CA1710014 | 1 | 0 | Low Level |
| HIDDEN VALLEY LAKE CSD Groundwater | CA1710015 | 1 | 0 | Low Level |
| CITY OF SUSANVILLE Groundwater | CA1810001 | 1 | 0 | Low Level |
| CITY OF ALHAMBRA Surface Water | CA1910001 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO.-LANCASTER Groundwater | CA1910010 | 1 | 0 | Low Level |
| LIBERTY UTILITIES - COMPTON Surface Water | CA1910021 | 1 | 0 | Low Level |
| GSWC - CULVER CITY Surface Water | CA1910030 | 1 | 0 | Low Level |
| EL SEGUNDO-CITY, WATER DEPT. Surface Water | CA1910040 | 1 | 0 | Low Level |
| HAWTHORNE-CITY WATER DEPT. Surface Water | CA1910047 | 1 | 0 | Low Level |
| CAL/AM WATER COMPANY - BALDWIN HILLS Surface Water | CA1910052 | 1 | 0 | Low Level |
| LA CANADA IRRIGATION DIST. Surface Water | CA1910054 | 1 | 0 | Low Level |
| LAS FLORES WATER CO. Surface Water | CA1910061 | 1 | 0 | Low Level |
| LONG BEACH-CITY, WATER DEPT. Surface Water | CA1910065 | 1 | 0 | Low Level |
| LOS ANGELES-CITY, DEPT. OF WATER & POWER Surface Water | CA1910067 | 1 | 0 | Low Level |
| LOS ANGELES CWWD 40,REG 4 & 34-LANCASTER MX | CA1910070 | 1 | 0 | Low Level |
| GSWC - Willowbrook Surface Water | CA1910072 | 1 | 0 | Low Level |
| GSWC - FLORENCE/GRAHAM Surface Water | CA1910077 | 1 | 0 | Low Level |
| MANHATTAN BEACH-CITY, WATER DEPT. MX | CA1910083 | 1 | 0 | Low Level |
| PALM RANCH IRRIGATION DIST. Groundwater | CA1910103 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO. - PALOS VER Surface Water | CA1910104 | 1 | 0 | Low Level |
| PARAMOUNT - CITY, WATER DEPT. Surface Water | CA1910105 | 1 | 0 | Low Level |
| MONTEBELLO-CITY, WATER DEPT. Surface Water | CA1910117 | 1 | 0 | Low Level |
| PASADENA-CITY, WATER DEPT. Surface Water | CA1910124 | 1 | 0 | Low Level |
| COVINA-CITY, WATER DEPT. Surface Water | CA1910127 | 1 | 0 | Low Level |
| QUARTZ HILL WATER DIST. Groundwater | CA1910130 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO. - HERM/REDO Surface Water | CA1910134 | 1 | 0 | Low Level |
| SIGNAL HILL - CITY, WATER DEPT. Surface Water | CA1910149 | 1 | 0 | Low Level |
| GSWC - SOUTHWEST Surface Water | CA1910155 | 1 | 0 | Low Level |
| BEVERLY HILLS-CITY, WATER DEPT. Groundwater | CA1910156 | 1 | 0 | Low Level |
| VALLEY WATER CO. MX | CA1910166 | 1 | 0 | Low Level |
| VERNON-CITY, WATER DEPT. Surface Water | CA1910167 | 1 | 0 | Low Level |
| GSWC - HOLLYDALE Groundwater | CA1910195 | 1 | 0 | Low Level |
| LOS ANGELES CWWD 40, R 24,27,33-PEARBLSM Surface Water | CA1910203 | 1 | 0 | Low Level |
| TORRANCE-CITY, WATER DEPT. Surface Water | CA1910213 | 1 | 0 | Low Level |
| LAS VIRGENES MWD Surface Water | CA1910225 | 1 | 0 | Low Level |
| WALNUT VALLEY WATER DISTRICT Surface Water | CA1910234 | 1 | 0 | Low Level |
| SANTA CLARITA VALLEY W.A.-CASTAIC DIV. MX | CA1910247 | 1 | 0 | Low Level |
| SANTA CLARITA VALLEY W.A.-PINETREE DIV. Surface Water | CA1910250 | 1 | 0 | Low Level |
| CAL AM - OAKHURST Groundwater | CA2010007 | 1 | 0 | Low Level |
| BOLINAS COMMUNITY PUD Surface Water | CA2110005 | 1 | 0 | Low Level |
| PONDEROSA BASIN MUTUAL WTR CO Groundwater | CA2210002 | 1 | 0 | Low Level |
| CITY OF GUSTINE Groundwater | CA2410003 | 1 | 0 | Low Level |
| CITY OF LOS BANOS Groundwater | CA2410005 | 1 | 0 | Low Level |
| MAMMOTH MOUNTAIN SKI AREA - OUTPOST 14 Groundwater | CA2600624 | 1 | 0 | Low Level |
| MAMMOTH CWD Groundwater | CA2610001 | 1 | 0 | Low Level |
| ALCO WATER SERVICE Groundwater | CA2710001 | 1 | 0 | Low Level |
| CASTROVILLE COMMUNITY SERVICES DISTRICT Groundwater | CA2710005 | 1 | 0 | Low Level |
| GONZALES, CITY OF Groundwater | CA2710007 | 1 | 0 | Low Level |
| GREENFIELD, CITY OF Groundwater | CA2710008 | 1 | 0 | Low Level |
| CWSC KING CITY Groundwater | CA2710009 | 1 | 0 | Low Level |
| CWSC SALINAS Groundwater | CA2710010 | 1 | 0 | Low Level |
| SOLEDAD, CITY OF Groundwater | CA2710011 | 1 | 0 | Low Level |
| CWSC SALINAS HILLS Groundwater | CA2710012 | 1 | 0 | Low Level |
| MARINA COAST WATER DISTRICT Groundwater | CA2710017 | 1 | 0 | Low Level |
| CWSC OAK HILLS Groundwater | CA2710019 | 1 | 0 | Low Level |
| CORRECTIONAL TRAINING FACILITY - SOLEDAD Groundwater | CA2710850 | 1 | 0 | Low Level |
| ST. HELENA, CITY OF Groundwater | CA2810004 | 1 | 0 | Low Level |
| CITY OF BREA Groundwater | CA3010002 | 1 | 0 | Low Level |
| MESA WATER DISTRICT Surface Water | CA3010004 | 1 | 0 | Low Level |
| LAGUNA BEACH COUNTY WD Surface Water | CA3010017 | 1 | 0 | Low Level |
| CITY OF LA HABRA Groundwater | CA3010018 | 1 | 0 | Low Level |
| CITY OF NEWPORT BEACH Surface Water | CA3010023 | 1 | 0 | Low Level |
| CITY OF SAN JUAN CAPISTRANO Surface Water | CA3010030 | 1 | 0 | Low Level |
| CITY OF SAN CLEMENTE Surface Water | CA3010036 | 1 | 0 | Low Level |
| CITY OF SEAL BEACH Surface Water | CA3010041 | 1 | 0 | Low Level |
| MOULTON NIGUEL WATER DISTRICT Surface Water | CA3010073 | 1 | 0 | Low Level |
| TRABUCO CANYON WATER DISTRICT Surface Water | CA3010094 | 1 | 0 | Low Level |
| CITY OF LA PALMA Surface Water | CA3010100 | 1 | 0 | Low Level |
| SANTA MARGARITA WATER DISTRICT Surface Water | CA3010101 | 1 | 0 | Low Level |
| CITY OF ROSEVILLE Groundwater | CA3110008 | 1 | 0 | Low Level |
| TAHOE CITY PUD - MAIN Groundwater | CA3110010 | 1 | 0 | Low Level |
| AMERICAN VALLEY CSD Groundwater | CA3210004 | 1 | 0 | Low Level |
| COACHELLA VWD: COVE COMMUNITY Groundwater | CA3310001 | 1 | 0 | Low Level |
| BLYTHE - CITY OF Groundwater | CA3310003 | 1 | 0 | Low Level |
| EASTERN MUNICIPAL WD Surface Water | CA3310009 | 1 | 0 | Low Level |
| HEMET, CITY OF Groundwater | CA3310016 | 1 | 0 | Low Level |
| LAKE HEMET MWD Groundwater | CA3310022 | 1 | 0 | Low Level |
| RIVERSIDE CSA #122-MESA VERDE Groundwater | CA3310028 | 1 | 0 | Low Level |
| CALIFORNIA REHABILITATION CENTER - NORCO Groundwater | CA3310800 | 1 | 0 | Low Level |
| CHUCKAWALLA VALLEY STATE PRISON Groundwater | CA3310802 | 1 | 0 | Low Level |
| CITRUS HEIGHTS WATER DISTRICT Groundwater | CA3410006 | 1 | 0 | Low Level |
| CALAM - ANTELOPE Surface Water | CA3410031 | 1 | 0 | Low Level |
| THOUSAND TRAILS SAN BENITO PRESERVE Groundwater | CA3500505 | 1 | 0 | Low Level |
| SAN BENITO HIGH SCHOOL Groundwater | CA3500571 | 1 | 0 | Low Level |
| HOLLISTER, CITY OF Groundwater | CA3510001 | 1 | 0 | Low Level |
| BAR-LEN MWC Groundwater | CA3600025 | 1 | 0 | Low Level |
| RANCHERITOS MWC Groundwater | CA3600200 | 1 | 0 | Low Level |
| LIBERTY UTILITIES (AV RANCHOS) CORP. Groundwater | CA3610003 | 1 | 0 | Low Level |
| JOSHUA BASIN WATER DISTRICT Groundwater | CA3610025 | 1 | 0 | Low Level |
| NEEDLES, CITY OF Groundwater | CA3610032 | 1 | 0 | Low Level |
| TWENTYNINE PALMS WATER DISTRICT Groundwater | CA3610049 | 1 | 0 | Low Level |
| VICTORVILLE WATER DISTRICT Groundwater | CA3610052 | 1 | 0 | Low Level |
| ARROWHEAD VILLAS MUTUAL SERVICE COMPANY Groundwater | CA3610093 | 1 | 0 | Low Level |
| GOLDEN STATE WATER CO - APPLE VLY SOUTH Groundwater | CA3610107 | 1 | 0 | Low Level |
| US ARMY FORT IRWIN Groundwater | CA3610705 | 1 | 0 | Low Level |
| CAL-AM WATER CORONADO Surface Water | CA3710001 | 1 | 0 | Low Level |
| VALLECITOS WD Surface Water | CA3710002 | 1 | 0 | Low Level |
| DEL MAR, CITY OF Surface Water | CA3710004 | 1 | 0 | Low Level |
| CARLSBAD MWD Surface Water | CA3710005 | 1 | 0 | Low Level |
| ESCONDIDO, CITY OF Surface Water | CA3710006 | 1 | 0 | Low Level |
| FALLBROOK PUD MX | CA3710008 | 1 | 0 | Low Level |
| HELIX WATER DISTRICT Surface Water | CA3710010 | 1 | 0 | Low Level |
| OCEANSIDE, CITY OF Surface Water | CA3710014 | 1 | 0 | Low Level |
| POWAY, CITY OF Surface Water | CA3710015 | 1 | 0 | Low Level |
| RAINBOW MUNICIPAL WD Surface Water | CA3710016 | 1 | 0 | Low Level |
| RAMONA MUNICIPAL WD Surface Water | CA3710019 | 1 | 0 | Low Level |
| SAN DIEGO, CITY OF Surface Water | CA3710020 | 1 | 0 | Low Level |
| VALLEY CENTER MWD Surface Water | CA3710026 | 1 | 0 | Low Level |
| VISTA IRRIGATION DISTRICT Surface Water | CA3710027 | 1 | 0 | Low Level |
| OLIVENHAIN MWD Surface Water | CA3710029 | 1 | 0 | Low Level |
| OTAY WATER DISTRICT Surface Water | CA3710034 | 1 | 0 | Low Level |
| BORREGO WD Groundwater | CA3710036 | 1 | 0 | Low Level |
| NAS NORTH ISLAND & NAB CORONADO MX | CA3710750 | 1 | 0 | Low Level |
| TRACY, CITY OF Groundwater | CA3910011 | 1 | 0 | Low Level |
| SAN JOAQUIN RIVER CLUB INC Groundwater | CA3910018 | 1 | 0 | Low Level |
| PISMO BEACH WATER DEPARTMENT Groundwater | CA4010008 | 1 | 0 | Low Level |
| SAN LUIS OBISPO WATER DEPARTMENT Surface Water | CA4010009 | 1 | 0 | Low Level |
| NIPOMO COMM SERVICES DIST MX | CA4010026 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE-S SAN FRANCISCO Groundwater | CA4110009 | 1 | 0 | Low Level |
| CITY OF DALY CITY MX | CA4110013 | 1 | 0 | Low Level |
| CITY OF SAN BRUNO Groundwater | CA4110023 | 1 | 0 | Low Level |
| CARPINTERIA VALLEY WATER DISTRICT Surface Water | CA4210001 | 1 | 0 | Low Level |
| GUADALUPE WATER DEPARTMENT MX | CA4210003 | 1 | 0 | Low Level |
| LOMPOC-CITY WATER UTILITY DIV Groundwater | CA4210006 | 1 | 0 | Low Level |
| MONTECITO WATER DIST Groundwater | CA4210007 | 1 | 0 | Low Level |
| CITY OF SANTA BARBARA WATER DEPARTMENT Surface Water | CA4210010 | 1 | 0 | Low Level |
| SANTA MARIA WATER DEPARTMENT MX | CA4210011 | 1 | 0 | Low Level |
| Golden State Water Co. - Orcutt Groundwater | CA4210016 | 1 | 0 | Low Level |
| VANDENBERG VILLAGE COMM. SERV. DIST. Groundwater | CA4210017 | 1 | 0 | Low Level |
| BUELLTON WATER DEPARTMENT Groundwater | CA4210018 | 1 | 0 | Low Level |
| MISSION HILLS CSD Groundwater | CA4210019 | 1 | 0 | Low Level |
| SANTA YNEZ RIVER WATER CONS. DIST. ID#1 Groundwater | CA4210020 | 1 | 0 | Low Level |
| LA CUMBRE MUTUAL WATER CO Groundwater | CA4210024 | 1 | 0 | Low Level |
| AMERICAN WATER O&M, LLC - VAFB Groundwater | CA4210700 | 1 | 0 | Low Level |
| HGST INC Groundwater | CA4300791 | 1 | 0 | Low Level |
| CWSC LOS ALTOS SUBURBAN Groundwater | CA4310001 | 1 | 0 | Low Level |
| CITY OF MOUNTAIN VIEW Groundwater | CA4310007 | 1 | 0 | Low Level |
| CITY OF SANTA CLARA Groundwater | CA4310012 | 1 | 0 | Low Level |
| CITY OF SAN JOSE - NSJ/ALVISO Groundwater | CA4310019 | 1 | 0 | Low Level |
| CITY OF SAN JOSE - EVG/EDV/COY Groundwater | CA4310020 | 1 | 0 | Low Level |
| TROUT GULCH MUTUAL WATER COMPANY Groundwater | CA4400502 | 1 | 0 | Low Level |
| CABRILLO COLLEGE Groundwater | CA4400753 | 1 | 0 | Low Level |
| SANTA CRUZ WATER DEPARTMENT Groundwater | CA4410010 | 1 | 0 | Low Level |
| SOQUEL CREEK WATER DISTRICT Groundwater | CA4410017 | 1 | 0 | Low Level |
| BELLA VISTA WATER DISTRICT Groundwater | CA4510014 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO. - DIXON Groundwater | CA4810002 | 1 | 0 | Low Level |
| CITY OF RIO VISTA Groundwater | CA4810004 | 1 | 0 | Low Level |
| CITY OF DIXON Groundwater | CA4810009 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO.-TRAVIS AFB Surface Water | CA4810701 | 1 | 0 | Low Level |
| CALIFORNIA STATE PRISON - SOLANO Surface Water | CA4810800 | 1 | 0 | Low Level |
| RODNEY STRONG VINEYARDS Groundwater | CA4900897 | 1 | 0 | Low Level |
| SEA RANCH WATER COMPANY,THE (PUC) Surface Water | CA4910007 | 1 | 0 | Low Level |
| SANTA ROSA, CITY OF Groundwater | CA4910009 | 1 | 0 | Low Level |
| SEBASTOPOL, CITY OF Groundwater | CA4910011 | 1 | 0 | Low Level |
| COTATI, CITY OF Groundwater | CA4910016 | 1 | 0 | Low Level |
| CALIFORNIA-AMERICAN LARKFIELD (PUC) Groundwater | CA4910023 | 1 | 0 | Low Level |
| SONOMA STATE UNIVERSITY Groundwater | CA4910027 | 1 | 0 | Low Level |
| JOE'S TRAVEL PLAZA (EH) Groundwater | CA5000202 | 1 | 0 | Low Level |
| CITY OF MODESTO - SALIDA Groundwater | CA5010005 | 1 | 0 | Low Level |
| CITY OF NEWMAN-WATER DEPARTMENT Groundwater | CA5010013 | 1 | 0 | Low Level |
| PATTERSON, CITY OF Groundwater | CA5010017 | 1 | 0 | Low Level |
| CITY OF CORNING Groundwater | CA5210001 | 1 | 0 | Low Level |
| TUD - SONORA/JAMESTOWN WATER SYSTEM Surface Water | CA5510001 | 1 | 0 | Low Level |
| FILLMORE WATER DEPT Groundwater | CA5610002 | 1 | 0 | Low Level |
| MEINERS OAKS CWD Groundwater | CA5610005 | 1 | 0 | Low Level |
| OXNARD WATER DEPT MX | CA5610007 | 1 | 0 | Low Level |
| PORT HUENEME WATER DEPT Surface Water | CA5610009 | 1 | 0 | Low Level |
| SANTA PAULA WATER SYSTEM Groundwater | CA5610011 | 1 | 0 | Low Level |
| OJAI WATER SYSTEM MX | CA5610014 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO - WESTLAKE Surface Water | CA5610016 | 1 | 0 | Low Level |
| VENTURA CWWD NO. 1 - MOORPARK Groundwater | CA5610018 | 1 | 0 | Low Level |
| CAMARILLO WATER DEPT Groundwater | CA5610019 | 1 | 0 | Low Level |
| VENTURA RIVER WATER DISTRICT Surface Water | CA5610022 | 1 | 0 | Low Level |
| CASITAS MUNICIPAL WATER DIST MX | CA5610024 | 1 | 0 | Low Level |
| CHANNEL ISLANDS BEACH CSD Surface Water | CA5610039 | 1 | 0 | Low Level |
| CAL AMERICAN WATER CO Surface Water | CA5610040 | 1 | 0 | Low Level |
| OAK PARK WATER SERVICE Surface Water | CA5610043 | 1 | 0 | Low Level |
| GOLDEN STATE WATER COMPANY - SIMI VALLEY Groundwater | CA5610059 | 1 | 0 | Low Level |
| CITY OF DAVIS Groundwater | CA5710001 | 1 | 0 | Low Level |
| CITY OF WOODLAND Groundwater | CA5710006 | 1 | 0 | Low Level |
| UC Davis Groundwater | CA5710009 | 1 | 0 | Low Level |