PFAS in California Water
Based on EPA UCMR 5 testing of 234 public water systems in California.
See California on the national heatmap234
Systems Tested
234
With PFAS Detected
164
Above EPA Limits
70%
Exceed MCL
Most Commonly Detected PFAS in California
Systems with detections · EPA UCMR 5 (2023–2025)
PFHxS 149 systems
PFOS 145 systems
PFPeA 138 systems
PFHxA 128 systems
PFOA 122 systems
PFBS 105 systems
Check your California ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in California (234)
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 |
| CITY OF FRESNO Groundwater | CA1010007 | 10 | 3 | High Risk |
| CITY OF ATWATER Groundwater | CA2410001 | 10 | 3 | High Risk |
| RUNNING SPRINGS WATER DISTRICT Groundwater | CA3610062 | 10 | 3 | High Risk |
| RIVERSIDE HIGHLAND WATER COMPANY Groundwater | CA3610057 | 9 | 3 | High Risk |
| CITY OF PLEASANTON Groundwater | CA0110008 | 8 | 3 | High Risk |
| LIBERTY UTILITIES - BELLFLOWER-NORWALK Groundwater | CA1910211 | 8 | 3 | High Risk |
| CITY OF SACRAMENTO MAIN Groundwater | CA3410020 | 8 | 3 | High Risk |
| BIG BEAR CITY CSD Groundwater | CA3610008 | 8 | 3 | High Risk |
| RUBIO CANON LAND & WATER ASSOCIATION Groundwater | CA1910140 | 7 | 3 | High Risk |
| CITY OF ANAHEIM Groundwater | CA3010001 | 7 | 3 | High Risk |
| CITY OF ORANGE Groundwater | CA3010027 | 7 | 3 | High Risk |
| NORCO, CITY OF Groundwater | CA3310025 | 7 | 3 | High Risk |
| Cal Am - Suburban Rosemont Groundwater | CA3410010 | 7 | 3 | High Risk |
| CRESTLINE VILLAGE CWD - DIVISION 10 Groundwater | CA3610015 | 7 | 3 | High Risk |
| HESPERIA WD Groundwater | CA3610024 | 7 | 3 | High Risk |
| HELENDALE COMMUNITY SERVICE DISTRICT Groundwater | CA3610112 | 7 | 3 | High Risk |
| CAL-WATER SERVICE CO.-CHICO Groundwater | CA0410002 | 6 | 3 | High Risk |
| YOSEMITE SPRING PARK UTIL CO Groundwater | CA2010005 | 6 | 3 | High Risk |
| CITY OF MERCED Groundwater | CA2410009 | 4 | 3 | High Risk |
| CITY OF CLOVIS Groundwater | CA1010003 | 10 | 2 | High Risk |
| PICO RIVERA - CITY, WATER DEPT. Groundwater | CA1910042 | 9 | 2 | High Risk |
| PICO WD Groundwater | CA1910125 | 9 | 2 | High Risk |
| UKIAH, CITY OF Groundwater | CA2310003 | 9 | 2 | High Risk |
| SOUTH TAHOE PUD - MAIN Groundwater | CA0910002 | 8 | 2 | High Risk |
| PINEDALE COUNTY WATER DISTRICT Groundwater | CA1010026 | 8 | 2 | High Risk |
| SANTA CLARITA VALLEY W.A.-SANTA CLARITA Groundwater | CA1910017 | 8 | 2 | High Risk |
| DOWNEY - CITY, WATER DEPT. Groundwater | CA1910034 | 8 | 2 | High Risk |
| GLENDALE-CITY, WATER DEPT. Groundwater | CA1910043 | 8 | 2 | High Risk |
| MONTEBELLO LAND & WATER CO. Groundwater | CA1910091 | 8 | 2 | High Risk |
| SANTA CLARITA VALLEY W.A.-VALENCIA DIVIS Groundwater | CA1910240 | 8 | 2 | High Risk |
| CAL AM WATER COMPANY - MONTEREY Groundwater | CA2710004 | 8 | 2 | High Risk |
| CITY OF FULLERTON Groundwater | CA3010010 | 8 | 2 | High Risk |
| RANCHO CALIFORNIA WATER DISTRICT Groundwater | CA3310038 | 8 | 2 | High Risk |
| LAKE ARROWHEAD CSD Surface Water | CA3610005 | 8 | 2 | High Risk |
| SWEETWATER AUTHORITY Surface Water | CA3710025 | 8 | 2 | High Risk |
| LOS OSOS COMMUNITY SERVICES DISTRICT Groundwater | CA4010016 | 8 | 2 | High Risk |
| PORTERVILLE, CITY OF Groundwater | CA5410010 | 8 | 2 | High Risk |
| CWS - BAKERSFIELD Groundwater | CA1510003 | 7 | 2 | High Risk |
| GOLDEN HILLS CSD Groundwater | CA1510045 | 7 | 2 | High Risk |
| GSWC - CLAREMONT Groundwater | CA1910024 | 7 | 2 | High Risk |
| ORCHARD DALE WATER DISTRICT Groundwater | CA1910101 | 7 | 2 | High Risk |
| CITY OF BELL GARDENS Groundwater | CA1910108 | 7 | 2 | High Risk |
| LA HABRA HEIGHTS CWD Groundwater | CA1910218 | 7 | 2 | High Risk |
| GOLDEN STATE WC - PLACENTIA/YORBA LINDA Groundwater | CA3010035 | 7 | 2 | High Risk |
| SCWA - LAGUNA/VINEYARD Groundwater | CA3410029 | 7 | 2 | High Risk |
| EAST VALLEY WATER DISTRICT Groundwater | CA3610064 | 7 | 2 | High Risk |
| LODI, CITY OF Groundwater | CA3910004 | 7 | 2 | High Risk |
| CITY OF GILROY Groundwater | CA4310004 | 7 | 2 | High Risk |
| CITY OF REDDING Groundwater | CA4510005 | 7 | 2 | High Risk |
| MODESTO, CITY OF Groundwater | CA5010010 | 7 | 2 | High Risk |
| CERES, CITY OF Groundwater | CA5010028 | 7 | 2 | High Risk |
| CALIFORNIA WATER SERVICE - LIVERMORE MX | CA0110003 | 6 | 2 | High Risk |
| CITY OF GRIDLEY Groundwater | CA0410004 | 6 | 2 | High Risk |
| SUBURBAN WATER SYSTEMS-LA MIRADA Groundwater | CA1910059 | 6 | 2 | High Risk |
| MONROVIA-CITY, WATER DEPT. Groundwater | CA1910090 | 6 | 2 | High Risk |
| POMONA - CITY, WATER DEPT. Groundwater | CA1910126 | 6 | 2 | High Risk |
| SOUTH GATE-CITY, WATER DEPT. Groundwater | CA1910152 | 6 | 2 | High Risk |
| SOUTH MONTEBELLO IRRIGATION DIST. Groundwater | CA1910153 | 6 | 2 | High Risk |
| VALENCIA HEIGHTS WATER CO. Surface Water | CA1910163 | 6 | 2 | High Risk |
| Suburban Water Systems - Whittier Groundwater | CA1910174 | 6 | 2 | High Risk |
| CITY OF GARDEN GROVE Groundwater | CA3010062 | 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 |
| ARROYO GRANDE, WATER DEPARTMENT MX | CA4010001 | 6 | 2 | High Risk |
| GUADALUPE VALLEY MID Surface Water | CA4110005 | 6 | 2 | High Risk |
| WATSONVILLE, CITY OF Groundwater | CA4410011 | 6 | 2 | High Risk |
| VALLEY OF THE MOON WATER DISTRICT Groundwater | CA4910013 | 6 | 2 | High Risk |
| CWS - VISALIA Groundwater | CA5410016 | 6 | 2 | High Risk |
| NORWALK - CITY, WATER DEPT. Groundwater | CA1910191 | 5 | 2 | High Risk |
| SANTA FE SPRINGS - CITY, WATER DEPT. Groundwater | CA1910245 | 5 | 2 | High Risk |
| GOLDEN STATE WC - WEST ORANGE COUNTY Groundwater | CA3010022 | 5 | 2 | High Risk |
| CITY OF SANTA ANA Groundwater | CA3010038 | 5 | 2 | High Risk |
| NUEVO WATER COMPANY Surface Water | CA3310026 | 5 | 2 | High Risk |
| FARM MUTUAL W.C. (THE) Surface Water | CA3310046 | 5 | 2 | High Risk |
| CALAM - ARDEN Groundwater | CA3410045 | 5 | 2 | High Risk |
| ATASCADERO MUTUAL WATER CO Groundwater | CA4010002 | 5 | 2 | High Risk |
| ATASCADERO STATE HOSPITAL Groundwater | CA4010832 | 5 | 2 | High Risk |
| PLEASANT VALLEY MUTUAL WATER CO MX | CA5610008 | 5 | 2 | High Risk |
| CITY OF SANGER Groundwater | CA1010029 | 4 | 2 | High Risk |
| BELLFLOWER MUNICIPAL WATER SYSTEM Surface Water | CA1910018 | 4 | 2 | High Risk |
| LYNWOOD-CITY, WATER DEPT. Groundwater | CA1910079 | 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 |
| CALISTOGA, CITY OF Surface Water | CA2810002 | 4 | 2 | High Risk |
| BIG BEAR LAKE DWP - BIG BEAR SYSTEM Groundwater | CA3610044 | 4 | 2 | High Risk |
| MANTECA, CITY OF Groundwater | CA3910005 | 4 | 2 | High Risk |
| CITY OF VACAVILLE Groundwater | CA4810008 | 4 | 2 | High Risk |
| LINDSAY, CITY OF Groundwater | CA5410006 | 4 | 2 | High Risk |
| LATON COMMUNITY SERVICES DISTRICT Groundwater | CA1010020 | 3 | 2 | High Risk |
| PETER PITCHESS HONOR RANCHO DETN. CTR Groundwater | CA1900046 | 3 | 2 | High Risk |
| RANCHO LOS AMIGOS HOSPITAL Groundwater | CA1900679 | 3 | 2 | High Risk |
| AZUSA LIGHT AND WATER Groundwater | CA1910007 | 3 | 2 | High Risk |
| COMPTON-CITY, WATER DEPT. Groundwater | CA1910026 | 3 | 2 | High Risk |
| HUNTINGTON PARK-CITY, WATER DEPT. Groundwater | CA1910049 | 3 | 2 | High Risk |
| MAYWOOD MUTUAL WATER CO. #3 Groundwater | CA1910086 | 3 | 2 | High Risk |
| LIBERTY UTILITIES - LYNWOOD Groundwater | CA1910161 | 3 | 2 | High Risk |
| GSWC-SOUTH ARCADIA Groundwater | CA1910212 | 3 | 2 | High Risk |
| WESTERN MWD - MURRIETA DIVISION Groundwater | CA3310036 | 3 | 2 | High Risk |
| REDLANDS CITY MUD-WATER DIV Groundwater | CA3610037 | 3 | 2 | High Risk |
| RIPON, CITY OF Groundwater | CA3910007 | 3 | 2 | High Risk |
| NORTHROP GRUMMAN CORP. Groundwater | CA1910097 | 8 | 1 | High Risk |
| RIALTO, CITY OF Groundwater | CA3610038 | 7 | 1 | High Risk |
| PASO ROBLES WATER DEPARTMENT Groundwater | CA4010007 | 7 | 1 | High Risk |
| CALIFORNIA STATE UNIVERSITY FRESNO Groundwater | CA1010339 | 6 | 1 | High Risk |
| GSWC - BELL, BELL GARDENS Groundwater | CA1910011 | 6 | 1 | High Risk |
| CRESCENTA VALLEY CWD Groundwater | CA1910028 | 6 | 1 | High Risk |
| COMMERCE-CITY, WATER DEPT. Groundwater | CA1910050 | 6 | 1 | High Risk |
| SANTA MONICA-CITY, WATER DIVISION Groundwater | CA1910146 | 6 | 1 | High Risk |
| CALIFORNIA WATER SERVICE CO. - ELA Groundwater | CA1910036 | 5 | 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 | 4 | 1 | High Risk |
| YUCAIPA VALLEY WATER DISTRICT Groundwater | CA3610055 | 4 | 1 | High Risk |
| SAN DIEGUITO WD Surface Water | CA3710021 | 4 | 1 | High Risk |
| GREAT OAKS WC INC Groundwater | CA4310022 | 4 | 1 | High Risk |
| CITY OF RED BLUFF Groundwater | CA5210004 | 4 | 1 | High Risk |
| BAKERSFIELD, CITY OF Groundwater | CA1510031 | 3 | 1 | High Risk |
| PLANADA CSD Groundwater | CA2410007 | 3 | 1 | High Risk |
| TRUCKEE-DONNER PUD, MAIN Groundwater | CA2910003 | 3 | 1 | High Risk |
| CITY OF TUSTIN Groundwater | CA3010046 | 3 | 1 | High Risk |
| LAKESIDE WD Groundwater | CA3710013 | 3 | 1 | High Risk |
| CITY OF LATHROP Groundwater | CA3910015 | 3 | 1 | High Risk |
| ROHNERT PARK, CITY OF Groundwater | CA4910014 | 3 | 1 | High Risk |
| SIERRA TAHOE MAIN LODGE Groundwater | CA0900659 | 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 |
| EL MONTE-CITY, WATER DEPT. Groundwater | CA1910038 | 2 | 1 | High Risk |
| LOMITA-CITY, WATER DEPT. Groundwater | CA1910073 | 2 | 1 | High Risk |
| LAKEWOOD - CITY, WATER DEPT. Groundwater | CA1910239 | 2 | 1 | High Risk |
| DELHI CWD Groundwater | CA2410006 | 2 | 1 | High Risk |
| CITY OF BUENA PARK Groundwater | CA3010003 | 2 | 1 | High Risk |
| CITY OF HUNTINGTON BEACH Groundwater | CA3010053 | 2 | 1 | High Risk |
| CITY OF WESTMINSTER Groundwater | CA3010064 | 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 |
| LOMA LINDA UNIVERSITY Groundwater | CA3600152 | 2 | 1 | High Risk |
| ADELANTO, CITY OF Groundwater | CA3610001 | 2 | 1 | High Risk |
| SAN JOSE WATER Groundwater | CA4310011 | 2 | 1 | High Risk |
| SONOMA, CITY OF Groundwater | CA4910012 | 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 |
| CAMROSA WATER DISTRICT Groundwater | CA5610063 | 2 | 1 | High Risk |
| CITY OF WHEATLAND Groundwater | CA5810004 | 2 | 1 | High Risk |
| THERMALITO WATER & SEWER DIST Groundwater | CA0410008 | 1 | 1 | High Risk |
| BEAR VALLEY CSD Groundwater | CA1510038 | 1 | 1 | High Risk |
| CWS - NORTH GARDEN Groundwater | CA1510055 | 1 | 1 | High Risk |
| CERRITOS - CITY, WATER DEPT. Groundwater | CA1910019 | 1 | 1 | High Risk |
| INGLEWOOD- CITY, WATER DEPT. Groundwater | CA1910051 | 1 | 1 | High Risk |
| MAYWOOD MUTUAL WATER CO. #1 Groundwater | CA1910084 | 1 | 1 | High Risk |
| MAYWOOD MUTUAL WATER CO. #2 Groundwater | CA1910085 | 1 | 1 | High Risk |
| GSWC-SAN DIMAS Groundwater | CA1910142 | 1 | 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 |
| SUNNYSLOPE COUNTY WATER DIST Groundwater | CA3510003 | 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 | 4 | 0 | Low Level |
| SOUTH MESA WC Groundwater | CA3310017 | 4 | 0 | Low Level |
| CORONA, CITY OF Groundwater | CA3310037 | 4 | 0 | Low Level |
| SACRAMENTO SUBURBAN WATER DISTRICT Groundwater | CA3410001 | 4 | 0 | Low Level |
| GLEN HELEN WATER SYSTEM Groundwater | CA3600108 | 4 | 0 | Low Level |
| SAN BERNARDINO CITY Groundwater | CA3610039 | 4 | 0 | Low Level |
| GOLDEN STATE WATER COMPANY - LOS OSOS Groundwater | CA4010017 | 4 | 0 | Low Level |
| GSWC - NORWALK Groundwater | CA1910098 | 3 | 0 | Low Level |
| PALMDALE WATER DIST. Groundwater | CA1910102 | 3 | 0 | Low Level |
| BURBANK-CITY, WATER DEPT. Surface Water | CA1910179 | 3 | 0 | Low Level |
| PERRIS, CITY OF Surface Water | CA3310029 | 3 | 0 | Low Level |
| RIVERSIDE, CITY OF GU | CA3310031 | 3 | 0 | Low Level |
| RUBIDOUX COMMUNITY SD Groundwater | CA3310044 | 3 | 0 | Low Level |
| WESTERN MWD MX | CA3310049 | 3 | 0 | Low Level |
| UPLAND, CITY OF Groundwater | CA3610050 | 3 | 0 | Low Level |
| HI DESERT WD Groundwater | CA3610073 | 3 | 0 | Low Level |
| SHEEP CREEK WATER COMPANY Groundwater | CA3610109 | 3 | 0 | Low Level |
| CITY OF MORGAN HILL Groundwater | CA4310006 | 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 |
| VAUGHN WC INC Groundwater | CA1510029 | 2 | 0 | Low Level |
| KONOCTI COUNTY WATER DISTRICT Surface Water | CA1710006 | 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 |
| YORBA LINDA WATER DISTRICT Groundwater | CA3010037 | 2 | 0 | Low Level |
| GOLDEN STATE WC - COWAN HEIGHTS Groundwater | CA3010047 | 2 | 0 | Low Level |
| SERRANO WATER DISTRICT Groundwater | CA3010082 | 2 | 0 | Low Level |
| IRVINE RANCH WATER DISTRICT Groundwater | CA3010092 | 2 | 0 | Low Level |
| CARMICHAEL WATER DISTRICT Groundwater | CA3410004 | 2 | 0 | Low Level |
| ELK GROVE WATER SERVICE Groundwater | CA3410008 | 2 | 0 | Low Level |
| RIO LINDA/ELVERTA COMMUNITY WATER DIST Groundwater | CA3410018 | 2 | 0 | Low Level |
| SANTA FE I.D. Surface Water | CA3710023 | 2 | 0 | Low Level |
| CAMP PENDLETON (SOUTH) Groundwater | CA3710702 | 2 | 0 | Low Level |
| TEMPLETON CSD Groundwater | CA4010019 | 2 | 0 | Low Level |
| GOLETA WATER DISTRICT Groundwater | CA4210004 | 2 | 0 | Low Level |
| SCOTTS VALLEY WATER DISTRICT Groundwater | CA4410013 | 2 | 0 | Low Level |
| CITY OF LIVE OAK, CA Groundwater | CA5110001 | 2 | 0 | Low Level |
| VENTURA WATER DEPARTMENT Surface Water | CA5610017 | 2 | 0 | Low Level |
| EAST BAY MUD Surface Water | CA0110005 | 1 | 0 | Low Level |
| CAL-WATER SERVICE CO.-OROVILLE Groundwater | CA0410005 | 1 | 0 | Low Level |
| EL DORADO ID - MAIN Surface Water | CA0910001 | 1 | 0 | Low Level |
| CITY OF FOWLER Groundwater | CA1010006 | 1 | 0 | Low Level |
| SO. CAL. EDISON CO.-SANTA CATALINA Groundwater | CA1910006 | 1 | 0 | Low Level |
| CALIFORNIA WATER SERVICE CO. - DOMINGUEZ Groundwater | CA1910033 | 1 | 0 | Low Level |
| SANTA CLARITA VALLEY W.A.-NEWHALL DIV. Groundwater | CA1910096 | 1 | 0 | Low Level |
| CAL/AM WATER COMPANY - SAN MARINO Surface Water | CA1910139 | 1 | 0 | Low Level |
| ROWLAND WATER DISTRICT Surface Water | CA1910194 | 1 | 0 | Low Level |
| GSWC - HOLLYDALE Groundwater | CA1910195 | 1 | 0 | Low Level |
| GSWC-SOUTH SAN GABRIEL Groundwater | CA1910223 | 1 | 0 | Low Level |
| BASS LAKE WATER COMPANY Surface Water | CA2010003 | 1 | 0 | Low Level |
| CITY OF ALTURAS Groundwater | CA2510001 | 1 | 0 | Low Level |
| SOUTH COAST WATER DISTRICT Surface Water | CA3010042 | 1 | 0 | Low Level |
| CITY OF FOUNTAIN VALLEY Groundwater | CA3010069 | 1 | 0 | Low Level |
| EL TORO WATER DISTRICT Surface Water | CA3010079 | 1 | 0 | Low Level |
| AMERICAN VALLEY CSD Groundwater | CA3210004 | 1 | 0 | Low Level |
| BANNING, CITY OF Groundwater | CA3310006 | 1 | 0 | Low Level |
| ELSINORE VALLEY MWD MX | CA3310012 | 1 | 0 | Low Level |
| CALIFORNIA REHABILITATION CENTER - NORCO Groundwater | CA3310800 | 1 | 0 | Low Level |
| CALAM - LINCOLN OAKS Groundwater | CA3410013 | 1 | 0 | Low Level |
| GOLDEN STATE WATER CO - WRIGHTWOOD Groundwater | CA3610047 | 1 | 0 | Low Level |
| RINCON DEL DIABLO MWD (ID-1) Surface Water | CA3710018 | 1 | 0 | Low Level |
| PADRE DAM MWD Surface Water | CA3710037 | 1 | 0 | Low Level |
| GOLDEN STATE WATER COMPANY - NIPOMO Groundwater | CA4010018 | 1 | 0 | Low Level |
| SOLVANG WATER DIVISION Groundwater | CA4210013 | 1 | 0 | Low Level |
| CWSC LOS ALTOS SUBURBAN Groundwater | CA4310001 | 1 | 0 | Low Level |
| SAN LORENZO VALLEY WATER DIST Groundwater | CA4410014 | 1 | 0 | Low Level |
| SEA RANCH WATER COMPANY,THE (PUC) Surface Water | CA4910007 | 1 | 0 | Low Level |
| CITY OF WINTERS Groundwater | CA5710005 | 1 | 0 | Low Level |