Home › PFAS › CA

PFAS in drinking water: California

EPA UCMR 5 results for 707 public water systems. 239 had at least one PFAS detected; 166 had a highest single PFOA or PFOS result above 4.0 ppt.

UCMR 5 is a one-time EPA monitoring program, not a compliance determination. The values shown are the highest single sample result at any of the system's sampling points; one result above 4.0 ppt does not mean the system violates the PFAS rule, which is judged on running annual averages under separate compliance monitoring. Results describe the public water system, not an individual home.

Water systemServesPFOA max (ppt)PFOS max (ppt)PFAS detected
Adelanto, City Of
CA3610001		AdelantoND4.52
Alameda County Water District
CA0110001		Alameda CountyNDND0
Alco Water Service
CA2710001		Monterey CountyNDND0
American Canyon, City Of
CA2810005		American CanyonNDND0
American Valley CSD
CA3210004		Plumas CountyNDND1
American Water O&M, LLC - Vafb
CA4210700		Santa Barbara CountyNDND0
Angels, City Of
CA0510003		Angels CampNDND0
Arcata, City Of
CA1210001		ArcataNDND0
Armona Community Services Dist
CA1610001		Kings CountyNDND0
Arrowhead Villas Mutual Service Company
CA3610093		San Bernardino CountyNDND0
Arroyo Grande, Water Department
CA4010001		San Luis Obispo County5.86.86
Arvin Community Services Dist
CA1510001		Kern CountyNDND0
Atascadero Mutual Water Co
CA4010002		San Luis Obispo County8.422.35
Atascadero State Hospital
CA4010832		San Luis Obispo CountyND335
Avenal, City Of
CA1610002		AvenalNDND0
Averydale MWC
CA1910023		Los Angeles CountyNDND0
Awa Buckhorn Plant
CA0310012		Amador CountyNDND0
Awa, Ione
CA0310002		JacksonNDND0
Awa, Tanner
CA0310003		Amador CountyNDND0
Azusa Light and Water
CA1910007		Los Angeles County7.75.83
Bakersfield, City Of
CA1510031		BakersfieldND8.43
Bakman Water Company
CA1010001		Fresno CountyNDND0
Bakman Water-Rolling Hills
CA2010009		Madera CountyNDND0
Banning, City Of
CA3310006		BanningNDND1
Bar-Len MWC
CA3600025		San Bernardino CountyNDND0
Bass Lake Water Company
CA2010003		Madera CountyNDND1
Beale Air Force Base
CA5810700		Yuba CountyNDND0
Bear Valley CSD
CA1510038		Kern County5.7ND1
Beaumont Cherry Valley WD
CA3310002		Riverside CountyNDND0
Bella Vista Water District
CA4510014		Shasta CountyNDND0
Bellflower - Somerset MWC
CA1910013		Los Angeles CountyND172
Bellflower Municipal Water System
CA1910018		Los Angeles County7.632.64
Beverly Hills-City, Water Dept.
CA1910156		Beverly HillsNDND0
Big Bear City CSD
CA3610008		Big Bear City4.59.98
Big Bear Lake DWP - Big Bear System
CA3610044		San Bernardino County5.56.14
Bishop, City Of
CA1410001		BishopNDND0
Blue Lake Springs Mut WTR
CA0510009		Calaveras CountyNDND0
Blue Lake, City Of
CA1210002		Blue LakeNDND0
Blythe - City Of
CA3310003		BlytheNDND0
Bolinas Community PUD
CA2110005		Marin CountyNDND0
Borrego WD
CA3710036		San Diego CountyNDND0
Brawley, City Of
CA1310001		BrawleyNDND0
Brentwood
CA0710004		BrentwoodNDND0
Brooktrails Township CSD
CA2310009		Mendocino CountyNDND0
Buellton Water Department
CA4210018		Santa Barbara CountyNDND0
Burbank-City, Water Dept.
CA1910179		BurbankNDND3
Butte-Glenn Community College Dist
CA0400070		Butte CountyNDND0
CCWD - Copper Cove
CA0510017		Calaveras CountyNDND0
CCWD - Ebbetts Pass
CA0510016		Calaveras CountyNDND0
CCWD - Jenny Lind
CA0510006		Calaveras CountyNDND0
CDCR-High Desert State Prison
CA1805004		Lassen CountyNDND0
CWS - Bakersfield
CA1510003		Kern County9.1147
CWS - North Garden
CA1510055		Kern CountyND4.61
CWS - Selma
CA1010024		Fresno CountyNDND0
CWS - Visalia
CA5410016		Tulare County4.26.96
CWSC King City
CA2710009		San JoseNDND0
CWSC Las Lomas
CA2710013		Monterey CountyNDND0
CWSC Los Altos Suburban
CA4310001		Santa Clara CountyNDND1
CWSC Oak Hills
CA2710019		Monterey CountyNDND0
CWSC Salinas
CA2710010		Monterey CountyNDND0
CWSC Salinas Hills
CA2710012		Monterey CountyNDND0
Cabrillo College
CA4400753		Santa Cruz CountyNDND0
Cal Am - Fruitridge Vista
CA3410023		Sacramento CountyNDND0
Cal Am - Meadowbrook
CA2410008		Merced CountyND8.31
Cal Am - Oakhurst
CA2010007		Madera CountyNDND0
Cal Am - Suburban Rosemont
CA3410010		Sacramento County8.213.47
Cal Am Water Company - Monterey
CA2710004		Monterey County8.17.38
Cal American Water Co
CA5610040		Ventura CountyNDND0
Cal-Am Water Company - Duarte
CA1910186		Los Angeles CountyND5.11
Cal-Am Water Coronado
CA3710001		San Diego CountyNDND0
Cal-Water Service Co.-Chico
CA0410002		Butte County6.822.56
Cal-Water Service Co.-Marysville
CA5810001		Yuba CountyNDND0
Cal-Water Service Co.-Oroville
CA0410005		Butte CountyNDND1
Cal-Water Service Co.-Willows
CA1110003		Glenn CountyNDND0
Cal/Am Water Company - Baldwin Hills
CA1910052		Los Angeles CountyNDND0
Cal/Am Water Company - San Marino
CA1910139		Los Angeles CountyNDND1
Calam - Antelope
CA3410031		Sacramento CountyNDND0
Calam - Arden
CA3410045		Sacramento County665
Calam - Lincoln Oaks
CA3410013		Sacramento CountyNDND1
Calam - Parkway
CA3410017		Sacramento County4.314.76
Calam - West Placer
CA3110150		Placer CountyNDND0
Calaveras PUD
CA0510002		Calaveras CountyNDND0
Calexico, City Of
CA1310002		CalexicoNDND0
Calif State Polytechnical Univ - Pomona
CA1910022		Los Angeles CountyNDND4
California City, City Of
CA1510032		California CityNDND0
California Institution For Men
CA3610850		San Bernardino CountyNDND0
California Mens Colony
CA4010830		San Luis Obispo CountyNDND0
California Rehabilitation Center - Norco
CA3310800		Riverside CountyNDND1
California State Fair
CA3410026		Sacramento CountyND142
California State Prison - Solano
CA4810800		Solano CountyNDND0
California State University Fresno
CA1010339		Fresno County12ND6
California Water Service - Bear Gulch
CA4110006		San Mateo CountyNDND0
California Water Service - Livermore
CA0110003		Alameda County4.8126
California Water Service - San Carlos
CA4110007		San Mateo CountyNDND0
California Water Service - San Mateo
CA4110008		San Mateo CountyNDND0
California Water Service - Stockton
CA3910001		San Joaquin CountyND5.21
California Water Service Co - Westlake
CA5610016		Ventura CountyNDND0
California Water Service Co. - Dixon
CA4810002		Solano CountyNDND0
California Water Service Co. - Dominguez
CA1910033		Los Angeles CountyNDND1
California Water Service Co. - Ela
CA1910036		Los Angeles CountyND8.65
California Water Service Co. - Herm/Redo
CA1910134		Los Angeles CountyNDND0
California Water Service Co. - Palos Ver
CA1910104		Los Angeles CountyNDND0
California Water Service Co.-Lancaster
CA1910010		Los Angeles CountyNDND0
California Water Service Co.-Travis AFB
CA4810701		Solano CountyNDND0
California Water Service-S San Francisco
CA4110009		San Mateo CountyNDND0
California-American Geyserville (Puc)
CA4910024		Sonoma CountyNDND0
California-American Larkfield (Puc)
CA4910023		Sonoma CountyNDND0
Calipatria State Prison
CA1310800		Imperial CountyNDND0
Calistoga, City Of
CA2810002		Calistoga6.412.24
Camarillo Water Dept
CA5610019		Ventura CountyNDND0
Cambria Comm Services Dist
CA4010014		San Luis Obispo CountyNDND0
Camp Pendleton (North)
CA3710700		San Diego CountyNDND1
Camp Pendleton (South)
CA3710702		San Diego CountyNDND2
Camrosa Water District
CA5610063		Ventura CountyND172
Canada Woods WC
CA2702588		Monterey CountyNDND0
Carlsbad MWD
CA3710005		San Diego CountyNDND0
Carmichael Water District
CA3410004		Sacramento CountyNDND2
Carpinteria Valley Water District
CA4210001		Santa Barbara CountyNDND0
Casitas Municipal Water Dist
CA5610024		Ventura CountyNDND0
Castroville Community Services District
CA2710005		Monterey CountyNDND0
Cci - Tehachapi
CA1510800		Kern CountyNDND0
Centerville C.S.D.
CA4510011		Shasta CountyNDND0
Centinela State Prison
CA1310801		Imperial CountyNDND0
Ceres, City Of
CA5010028		Ceres12247
Cerritos - City, Water Dept.
CA1910019		CerritosND4.81
Channel Islands Beach CSD
CA5610039		Ventura CountyNDND0
China Lake Naval Air Weapons Station
CA1510703		Kern CountyNDND0
Chino Hills, City Of
CA3610036		Chino HillsNDND0
Chino, City Of
CA3610012		ChinoNDND0
Chowchilla City Water Dept
CA2010001		Chowchilla4.5ND1
Chuckawalla Valley State Prison
CA3310802		Riverside CountyNDND0
Citrus Heights Water District
CA3410006		Sacramento CountyNDND0
City of Alhambra
CA1910001		AlhambraNDND0
City of Alturas
CA2510001		AlturasNDND1
City of Anaheim
CA3010001		Anaheim10.1297
City of Anderson
CA4510001		AndersonNDND0
City of Antioch
CA0710001		AntiochNDND0
City of Arcadia
CA1910003		ArcadiaND102
City of Atwater
CA2410001		Atwater334510
City of Bell Gardens
CA1910108		Bell Gardens14237
City of Benicia
CA4810001		BeniciaNDND3
City of Brea
CA3010002		BreaNDND0
City of Buena Park
CA3010003		Buena ParkND6.82
City of Burlingame
CA4110003		BurlingameNDND0
City of Clovis
CA1010003		Clovis184110
City of Colusa
CA0610002		ColusaNDND0
City of Corning
CA5210001		CorningNDND0
City of Crescent City
CA0810001		Crescent CityNDND0
City of Cupertino
CA4310018		CupertinoNDND0
City of Daly City
CA4110013		Daly CityNDND0
City of Davis
CA5710001		DavisNDND0
City of Dixon
CA4810009		Solano CountyNDND0
City of Dos Palos
CA2410002		Dos PalosNDND0
City of East Palo Alto
CA4110024		East Palo AltoNDND0
City of Fairfield
CA4810003		FairfieldNDND0
City of Fountain Valley
CA3010069		Fountain ValleyNDND1
City of Fowler
CA1010006		FowlerNDND1
City of Fresno
CA1010007		Fresno163010
City of Fullerton
CA3010010		Fullerton10.813.38
City of Garden Grove
CA3010062		Garden Grove8.1196
City of Gilroy
CA4310004		Gilroy85.87
City of Grass Valley
CA2910001		Grass ValleyNDND0
City of Gridley
CA0410004		GridleyND10.56
City of Gustine
CA2410003		GustineNDND0
City of Hayward
CA0110006		HaywardNDND0
City of Huntington Beach
CA3010053		Huntington BeachND6.12
City of Industry Waterworks Systems
CA1910029		La PuenteNDND0
City of Jackson
CA0310001		JacksonNDND0
City of La Habra
CA3010018		La HabraNDND0
City of La Palma
CA3010100		La PalmaNDND0
City of Lathrop
CA3910015		LathropND173
City of Lincoln
CA3110004		LincolnND4.32
City of Live Oak, Ca
CA5110001		Live OakNDND2
City of Livermore
CA0110011		LivermoreNDND0
City of Livingston
CA2410004		LivingstonNDND0
City of Los Banos
CA2410005		Los BanosNDND0
City of Madera
CA2010002		MaderaNDND0
City of Martinez
CA0710006		MartinezNDND0
City of Merced
CA2410009		Merced6.18.94
City of Millbrae
CA4110018		MillbraeNDND0
City of Milpitas
CA4310005		MilpitasNDND0
City of Modesto - Salida
CA5010005		ModestoNDND0
City of Morgan Hill
CA4310006		Morgan HillNDND3
City of Mountain View
CA4310007		Mountain ViewNDND0
City of Newman-Water Department
CA5010013		NewmanNDND0
City of Newport Beach
CA3010023		Newport BeachNDND0
City of Orange
CA3010027		Orange9.3177
City of Orange Cove
CA1010023		Orange CoveNDND0
City of Orland
CA1110001		OrlandNDND0
City of Palo Alto
CA4310009		Palo AltoNDND0
City of Parlier
CA1010025		ParlierNDND0
City of Pittsburg
CA0710008		PittsburgNDND0
City of Pleasanton
CA0110008		Pleasanton5.1268
City of Red Bluff
CA5210004		Red Bluff7.4ND4
City of Redding
CA4510005		Redding16.212.67
City of Redwood City
CA4110022		Redwood CityNDND0
City of Rio Vista
CA4810004		Rio VistaNDND0
City of Roseville
CA3110008		RosevilleNDND0
City of Sacramento Main
CA3410020		Sacramento17.341.48
City of San Bruno
CA4110023		San BrunoNDND0
City of San Clemente
CA3010036		San ClementeNDND0
City of San Jose - Evg/Edv/Coy
CA4310020		San JoseNDND0
City of San Jose - Nsj/Alviso
CA4310019		San JoseNDND0
City of San Juan Capistrano
CA3010030		San Juan CapistranoNDND0
City of Sanger
CA1010029		Sanger5.66.74
City of Santa Ana
CA3010038		Santa Ana8.914.25
City of Santa Barbara Water Department
CA4210010		Santa BarbaraNDND0
City of Santa Clara
CA4310012		Santa ClaraNDND0
City of Seal Beach
CA3010041		Seal BeachNDND0
City of Shasta Lake
CA4510006		Shasta Lake 451NDND0
City of South Pasadena
CA1910154		South PasadenaNDND0
City of Stockton
CA3910012		Stockton6.7283
City of Sunnyvale
CA4310014		SunnyvaleNDND0
City of Susanville
CA1810001		SusanvilleNDND0
City of Tustin
CA3010046		TustinND4.23
City of Vacaville
CA4810008		Vacaville5.1104
City of Vallejo
CA4810007		VallejoNDND0
City of Vallejo-Lakes System
CA4810021		VallejoNDND0
City of Waterford
CA5010006		ModestoNDND0
City of West Sacramento
CA5710003		West SacramentoNDND0
City of Westminster
CA3010064		WestminsterND5.32
City of Wheatland
CA5810004		WheatlandND112
City of Williams
CA0610004		WilliamsNDND0
City of Winters
CA5710005		WintersNDND1
City of Woodland
CA5710006		WoodlandNDND0
City of Yuba City
CA5110002		Yuba CityNDND0
Clear Creek CSD-Anderson
CA4510016		Shasta CountyNDND0
Cloverdale, City Of
CA4910002		CloverdaleNDND0
Coachella VWD: Cove Community
CA3310001		Riverside CountyNDND0
Coachella VWD: I.D. No. 8
CA3310048		Riverside CountyNDND0
Coachella Water Authority
CA3310007		CoachellaNDND0
Coalinga-City
CA1010004		CoalingaNDND0
Coastside County Water District
CA4110011		San Mateo CountyNDND0
Colton, City Of
CA3610014		Colton5.9186
Commerce-City, Water Dept.
CA1910050		Montebello9.3ND6
Compton-City, Water Dept.
CA1910026		Compton4.9173
Contra Costa Water District
CA0710003		Contra Costa CountyNDND0
Corcoran, City Of
CA1610004		CorcoranNDND0
Corona, City Of
CA3310037		CoronaNDND4
Correctional Training Facility - Soledad
CA2710850		Monterey CountyNDND0
Cotati, City Of
CA4910016		CotatiNDND0
Cottonwood County Water Dist.
CA4510007		Shasta CountyNDND0
Covina-City, Water Dept.
CA1910127		CovinaNDND0
Crescenta Valley CWD
CA1910028		Los Angeles County5.1ND6
Crestline Village CWD - Division 10
CA3610015		San Bernardino County4.55.27
Csa 70 W-3 Hacienda
CA3600114		San Bernardino CountyNDND0
Cucamonga Valley Water District
CA3610018		San Bernardino CountyNDND0
Cutler PUD
CA5410001		Tulare CountyNDND0
Del Mar, City Of
CA3710004		Del MarNDND0
Del Paso Manor County Water Di
CA3410007		Sacramento CountyNDND0
Delano, City Of
CA1510005		DelanoNDND0
Delhi CWD
CA2410006		Merced CountyND7.32
Denair Community Services District
CA5010021		Stanislaus CountyNDND0
Desert Water Agency
CA3310005		Riverside CountyNDND0
Diablo Water District
CA0710007		Contra Costa CountyNDND0
Dinuba, City Of
CA5410002		DinubaNDND0
Downey - City, Water Dept.
CA1910034		Downey15448
Dublin San Ramon Services District
CA0110009		Alameda CountyNDND0
Earlimart PUD
CA5410021		Tulare CountyNDND0
East Bay MUD
CA0110005		Alameda CountyNDND2
East Niles CSD
CA1510006		Kern CountyNDND0
East Pasadena Water Co.
CA1910020		Los Angeles CountyNDND0
East Valley Water District
CA3610064		San Bernardino County9127
Eastern Municipal WD
CA3310009		Riverside CountyNDND0
Edwards AFB - Main Base
CA1510701		Kern CountyNDND0
El Centro, City Of
CA1310004		El CentroNDND0
El Dorado Id - Main
CA0910001		El Dorado CountyNDND1
El Monte-City, Water Dept.
CA1910038		El MonteND4.42
El Segundo-City, Water Dept.
CA1910040		El SegundoNDND0
El Toro Water District
CA3010079		Orange CountyNDND1
Elk Grove Water Service
CA3410008		Sacramento CountyNDND2
Elsinore Valley MWD
CA3310012		Riverside CountyNDND1
Escalon, City Of
CA3910003		EscalonNDND0
Escondido, City Of
CA3710006		EscondidoNDND0
Estero Municipal Improvement District
CA4110021		San Mateo CountyNDND0
Eureka, City Of
CA1210004		EurekaNDND0
Exeter, City Of
CA5410003		ExeterNDND0
Fair Oaks Water District
CA3410009		Sacramento CountyNDND0
Fallbrook PUD
CA3710008		San Diego CountyNDND0
Farm Mutual W.C. (The)
CA3310046		Riverside County4.24.35
Farmersville, City Of
CA5410004		FarmersvilleNDND0
Fillmore Water Dept
CA5610002		Ventura CountyNDND0
Firebaugh City
CA1010005		FirebaughNDND0
Florin County Water District
CA3410033		Sacramento County11.86.66
Folsom State Prison
CA3410032		Sacramento CountyND6.81
Folsom, City of - Ashland
CA3410030		FolsomNDND0
Folsom, City of - Main
CA3410014		FolsomNDND0
Foresthill Public Utility Dist
CA3110003		Placer CountyNDND0
Fort Bragg, City Of
CA2310001		Fort BraggNDND0
Fortuna, City Of
CA1210006		FortunaNDND0
GSWC - Artesia
CA1910004		Los Angeles CountyND132
GSWC - Bell, Bell Gardens
CA1910011		Los Angeles CountyND156
GSWC - Claremont
CA1910024		Los Angeles County12.910.47
GSWC - Culver City
CA1910030		Santa Fe SpringsNDND0
GSWC - Florence/Graham
CA1910077		Los Angeles CountyNDND0
GSWC - Hollydale
CA1910195		Los Angeles CountyNDND1
GSWC - Norwalk
CA1910098		Los Angeles CountyNDND3
GSWC - Southwest
CA1910155		Los Angeles CountyNDND0
GSWC - Willowbrook
CA1910072		Los Angeles CountyNDND0
GSWC-Calipatria
CA1310003		Imperial CountyNDND0
GSWC-San Dimas
CA1910142		Los Angeles CountyND4.62
GSWC-South Arcadia
CA1910212		Los Angeles County5.5223
GSWC-South San Gabriel
CA1910223		Los Angeles CountyNDND1
Galt, City Of
CA3410011		GaltNDND0
Georgetown Divide PUD
CA0910013		El Dorado CountyNDND0
Glen Helen Water System
CA3600108		San Bernardino CountyNDND4
Glendale-City, Water Dept.
CA1910043		Glendale14.815.88
Glendora-City, Water Dept.
CA1910044		GlendoraNDND0
Golden Hills CSD
CA1510045		Kern County18.67.87
Golden State WC - Cowan Heights
CA3010047		Orange CountyNDND2
Golden State WC - Placentia/Yorba Linda
CA3010035		Orange County66.57
Golden State WC - West Orange County
CA3010022		Orange County8.1165
Golden State Water Co - Apple Vly South
CA3610107		San Bernardino CountyNDND0
Golden State Water Co - Arden Water Serv
CA3410003		Sacramento CountyNDND0
Golden State Water Co - Barstow
CA3610043		San Bernardino County5.7ND4
Golden State Water Co - Wrightwood
CA3610047		San Bernardino CountyNDND1
Golden State Water Co. - Cordova
CA3410015		Sacramento CountyNDND0
Golden State Water Co. - Orcutt
CA4210016		Santa Barbara CountyNDND0
Golden State Water Co.-Clearlake System
CA1710002		Lake CountyNDND0
Golden State Water Company - Bay Point
CA0710002		Contra Costa CountyNDND0
Golden State Water Company - Los Osos
CA4010017		San Luis Obispo CountyNDND4
Golden State Water Company - Nipomo
CA4010018		San Luis Obispo CountyNDND1
Golden State Water Company - Simi Valley
CA5610059		Ventura CountyNDND0
Goleta Water District
CA4210004		Santa Barbara CountyNDND2
Gonzales, City Of
CA2710007		GonzalesNDND0
Great Oaks WC Inc
CA4310022		Santa Clara CountyND4.64
Greenfield County WD
CA1510024		Kern CountyNDND0
Greenfield, City Of
CA2710008		GreenfieldNDND0
Groveland Community Serv Dist
CA5510009		Tuolumne CountyND4.92
Grover Beach Water Department
CA4010004		San Luis Obispo CountyNDND0
Guadalupe Valley Mid
CA4110005		San Mateo County9.68.36
Guadalupe Water Department
CA4210003		Santa Barbara CountyNDND0
HGST Inc
CA4300791		Santa Clara CountyNDND0
Hanford, City Of
CA1610003		HanfordNDND0
Hawthorne-City Water Dept.
CA1910047		HawthorneNDND0
Healdsburg, City Of
CA4910005		HealdsburgNDND3
Heber Public Utility District
CA1310007		Imperial CountyNDND0
Helendale Community Service District
CA3610112		San Bernardino County13237
Helix Water District
CA3710010		San Diego CountyNDND0
Hemet, City Of
CA3310016		HemetNDND0
Heritage Ranch CSD
CA4010012		San Luis Obispo CountyNDND0
Hesperia WD
CA3610024		San Bernardino County10.211.17
Hi Desert WD
CA3610073		San Bernardino CountyNDND3
Hidden Valley Lake CSD
CA1710015		Lake CountyNDND0
Highlands Mutual Water Company
CA1710003		Lake CountyNDND0
Hilmar County Water District
CA2410012		Merced CountyNDND0
Hollister, City Of
CA3510001		HollisterNDND0
Holtville, City Of
CA1310005		HoltvilleNDND0
Hughson, City Of
CA5010008		HughsonNDND0
Humboldt C.S.D.
CA1210009		Humboldt CountyNDND0
Huntington Park-City, Water Dept.
CA1910049		Huntington Park5.1233
Huron, City Of
CA1010044		HuronNDND0
Imperial Valley College
CA1300549		Imperial CountyNDND0
Imperial, City Of
CA1310006		ImperialNDND0
Indian Wells Valley W.D.
CA1510017		Kern CountyNDND0
Indio Water Authority
CA3310020		Riverside CountyNDND0
Inglewood- City, Water Dept.
CA1910051		Inglewood4.4ND1
Irvine Ranch Water District
CA3010092		Orange CountyNDND2
Ivanhoe Public Utility Dist
CA5410019		Tulare CountyNDND0
Jackson Valley Irrigation District
CA0300037		Amador CountyNDND0
Joe's Travel Plaza (Eh)
CA5000202		Stanislaus CountyNDND0
Joshua Basin Water District
CA3610025		San Bernardino CountyNDND0
Jurupa Community SD
CA3310021		Riverside CountyNDND0
Kelseyville Co Waterworks District 3
CA1710007		Lake CountyNDND0
Kerman, City Of
CA1010018		KermanNDND0
Kern Valley State Prison
CA1510802		Kern CountyNDND0
Keyes Community Services Dist.
CA5010009		Stanislaus CountyNDND0
Kingsburg, City Of
CA1010019		KingsburgNDND0
Kirkwood Meadows Public Utility District
CA0210002		Alpine CountyNDND1
Konocti County Water District
CA1710006		Lake CountyNDND2
La Canada Irrigation Dist.
CA1910054		Los Angeles CountyNDND0
La Cumbre Mutual Water Co
CA4210024		Santa Barbara CountyNDND0
La Habra Heights CWD
CA1910218		Los Angeles County11237
La Puente Valley CWD
CA1910060		Los Angeles CountyNDND0
La Verne, City WD
CA1910062		La VerneNDND0
Laguna Beach County WD
CA3010017		Orange CountyNDND0
Lake Almanor Country Club MWC
CA3210006		Plumas CountyNDND0
Lake Arrowhead CSD
CA3610005		San Bernardino County147.28
Lake Hemet MWD
CA3310022		Riverside CountyNDND0
Lake of the Springs
CA5800809		Yuba CountyNDND0
Lakeport, City Of
CA1710004		LakeportNDND0
Lakeside WD
CA3710013		San Diego CountyND4.83
Lakeside Woods Mutual Water Co
CA4500013		Shasta CountyNDND0
Lakewood - City, Water Dept.
CA1910239		LakewoodND18.52
Lamont Public Utility Dist
CA1510012		Kern CountyNDND0
Las Flores Water Co.
CA1910061		Los Angeles CountyNDND0
Las Virgenes MWD
CA1910225		Los Angeles CountyNDND0
Laton Community Services District
CA1010020		Fresno County6.26.13
Lawrence Livermore National Lab Site 200
CA0110701		LivermoreNDND0
Lemoore Naval Air Station
CA1610700		Kings CountyNDND0
Lemoore, City Of
CA1610005		LemooreNDND0
Liberty Utilities (Av Ranchos) Corp.
CA3610003		San Bernardino CountyNDND0
Liberty Utilities - Bellflower-Norwalk
CA1910211		Los Angeles County16598
Liberty Utilities - Compton
CA1910021		Los Angeles CountyNDND0
Liberty Utilities - Lynwood
CA1910161		Los Angeles County5173
Lincoln Avenue Water Co.
CA1910063		Los Angeles CountyNDND0
Linda County Water District
CA5810002		Yuba CountyNDND0
Lindsay, City Of
CA5410006		Lindsay9.2124
Littlerock Creek Irrigation Dist.
CA1910064		Los Angeles CountyNDND0
Lodi, City Of
CA3910004		Lodi6.25.67
Loma Linda University
CA3600152		San Bernardino CountyND4.22
Loma Linda, City Of
CA3610013		Loma LindaNDND0
Lomita-City, Water Dept.
CA1910073		LomitaND4.32
Lompoc-City Water Utility Div
CA4210006		LompocNDND0
Long Beach-City, Water Dept.
CA1910065		Long BeachNDND0
Los Angeles CWWD 29 & 80-Malibu
CA1910204		Los Angeles CountyNDND0
Los Angeles CWWD 36-Val Verde
CA1910185		Los Angeles CountyNDND0
Los Angeles CWWD 37-Acton
CA1910248		Los Angeles CountyNDND0
Los Angeles CWWD 40, R 24,27,33-Pearblsm
CA1910203		Los Angeles CountyNDND0
Los Angeles CWWD 40, Reg. 38-Lake La
CA1910005		Los Angeles CountyNDND0
Los Angeles CWWD 40,Reg 4 & 34-Lancaster
CA1910070		Los Angeles CountyNDND0
Los Angeles-City, Dept. of Water & Power
CA1910067		Los AngelesNDND0
Los Osos Community Services District
CA4010016		San Luis Obispo County14.711.78
Lucerne Water Co. - Cal Water Service
CA1710005		Lake CountyNDND0
Lynwood-City, Water Dept.
CA1910079		Lynwood7.8234
Madera Valley Water Company
CA2010010		Madera CountyNDND0
Malaga County Water District
CA1010042		Fresno CountyNDND0
Mammoth CWD
CA2610001		Mono CountyNDND0
Mammoth Mountain Ski Area - Outpost 14
CA2600624		Mono CountyNDND0
Manhattan Beach-City, Water Dept.
CA1910083		Manhattan BeachNDND0
Manteca, City Of
CA3910005		Manteca7ND4
Marin Municipal Water District
CA2110002		Marin CountyNDND0
Marina Coast Water District
CA2710017		Monterey CountyNDND0
Maywood Mutual Water Co. #1
CA1910084		Los Angeles CountyND11.31
Maywood Mutual Water Co. #2
CA1910085		Los Angeles CountyND4.31
Maywood Mutual Water Co. #3
CA1910086		Los Angeles County7.326.43
Mcfarland, City Of
CA1510013		McfarlandNDND0
Mckinleyville C.S.D.
CA1210016		Humboldt CountyNDND0
Meadow Vista CWD
CA3110009		Placer CountyNDND0
Meadows Union Elementary School
CA1300554		Imperial CountyNDND0
Meiners Oaks CWD
CA5610005		Ventura CountyNDND0
Mendota, City Of
CA1010021		MendotaNDND0
Menlo Park Municipal Water
CA4110017		Menlo ParkNDND0
Mesa Water District
CA3010004		Orange CountyNDND0
Mid Valley Ag
CA5000592		Stanislaus CountyNDND0
Mid-Peninsula Water District
CA4110001		San Mateo CountyNDND0
Millview County Water District
CA2310006		Mendocino CountyNDND0
Mission Hills CSD
CA4210019		Santa Barbara CountyNDND0
Mission Springs WD
CA3310008		Riverside CountyNDND0
Modesto, City Of
CA5010010		Modesto8.6267
Mojave PUD
CA1510014		Kern CountyNDND0
Monrovia-City, Water Dept.
CA1910090		Monrovia5.46.16
Montara Water and Sanitary District
CA4110010		San Mateo CountyNDND0
Monte Vista CWD
CA3610029		San Bernardino CountyND5.65
Montebello Land & Water Co.
CA1910091		Los Angeles County16538
Montebello-City, Water Dept.
CA1910117		MontebelloNDND0
Montecito Water Dist
CA4210007		Santa Barbara CountyNDND0
Monterey Park-City, Water Dept.
CA1910092		Monterey ParkNDND2
Morro Bay PW Dept - Water Division
CA4010011		San Luis Obispo CountyNDND0
Moulton Niguel Water District
CA3010073		Orange CountyNDND0
Mountain House Community Services Dist.
CA3910027		San Joaquin CountyNDND0
Mt. Konocti Mutual Water Company
CA1710014		Lake CountyNDND0
Mt. Shasta, City Of
CA4710008		Mount ShastaNDND0
Muscoy MWC No. 1
CA3610031		San Bernardino CountyNDND0
Myoma Dunes Mutual Water Company
CA3310051		Riverside CountyNDND0
NAS North Island & Nab Coronado
CA3710750		San Diego CountyNDND0
NPS Ggnra
CA2110350		Marin CountyNDND0
Napa, City Of
CA2810003		NapaNDND0
Nasa Ames Research Center
CA4300997		Santa Clara CountyNDND0
Needles, City Of
CA3610032		NeedlesNDND0
Nevada Id - E. George, Banner Mountain
CA2910004		Nevada CountyNDND0
Nevada Id - Lake Wildwood
CA2910023		Nevada CountyNDND0
Nevada Id - Lake of Pines
CA2910014		Nevada CountyNDND0
Nevada Id - Loma Rica
CA2910006		Nevada CountyNDND0
Nevada Id - North Auburn
CA3110026		Placer CountyNDND0
Nipomo Comm Services Dist
CA4010026		San Luis Obispo CountyNDND0
Norco, City Of
CA3310025		Norco13.731.47
North Coast County Water Dist
CA4110025		San Mateo CountyNDND0
North Marin Water District
CA2110003		Marin CountyNDND0
North Perris Water System
CA3310082		Riverside CountyNDND0
North Tahoe PUD - Main
CA3110001		Placer CountyNDND0
Northrop Grumman Corp.
CA1910097		Los Angeles County5.5ND8
Northstar C.S.D.
CA3110028		Placer CountyNDND0
Norwalk - City, Water Dept.
CA1910191		Norwalk5.2265
Nuevo Water Company
CA3310026		Riverside County74.65
Oak Park Water Service
CA5610043		Ventura CountyNDND0
Oakdale, City Of
CA5010014		OakdaleNDND0
Oceano Comm Services Dist.
CA4010005		San Luis Obispo CountyNDND0
Oceanside, City Of
CA3710014		OceansideNDND0
Oildale MWC
CA1510015		Kern CountyNDND0
Ojai Water System
CA5610014		Ventura CountyNDND0
Olivehurst Public U.D.
CA5810003		Yuba CountyNDND0
Olivenhain MWD
CA3710029		San Diego CountyNDND0
Olympia Mobilodge
CA3410022		Sacramento County4.2ND5
Ontario Municipal Utilities Company
CA3610034		Ontario305.26
Orange Vale Water Company
CA3410016		Sacramento CountyNDND0
Orchard Dale Water District
CA1910101		Los Angeles County9.9237
Orosi Public Utility District
CA5410008		Tulare CountyNDND0
Otay Water District
CA3710034		San Diego CountyNDND0
Oxnard Water Dept
CA5610007		Ventura CountyNDND0
Padre Dam MWD
CA3710037		San Diego CountyNDND1
Pajaro Community Services District
CA2710020		Monterey CountyNDND0
Palm Ranch Irrigation Dist.
CA1910103		Los Angeles CountyNDND0
Palmdale Water Dist.
CA1910102		Los Angeles CountyNDND3
Paradise Irrigation District
CA0410007		Butte CountyNDND0
Paramount - City, Water Dept.
CA1910105		ParamountNDND0
Pasadena-City, Water Dept.
CA1910124		PasadenaNDND0
Paso Robles Water Department
CA4010007		San Luis Obispo County6.3ND7
Patterson Tract CSD
CA5402038		Tulare CountyNDND0
Patterson, City Of
CA5010017		PattersonNDND0
Perris, City Of
CA3310029		PerrisNDND3
Petaluma, City Of
CA4910006		PetalumaNDND0
Peter Pitchess Honor Rancho Detn. CTR
CA1900046		Los Angeles County56.53
Phelan Pinon Hills CSD
CA3610120		San Bernardino CountyNDND0
Pico Rivera - City, Water Dept.
CA1910042		Pico Rivera16309
Pico WD
CA1910125		Los Angeles County14289
Pinedale County Water District
CA1010026		Fresno County128.88
Pismo Beach Water Department
CA4010008		San Luis Obispo CountyNDND0
Placer Cwa - Auburn/Bowman
CA3110005		Placer CountyNDND0
Placer Cwa - Foothill
CA3110025		Placer CountyNDND0
Placerville, City of - Main
CA0910003		El Dorado CountyNDND0
Planada CSD
CA2410007		Merced CountyND14.73
Pleasant Valley Mutual Water Co
CA5610008		Ventura County10.1115
Plumas Lake
CA5805001		Yuba CountyNDND0
Pomona - City, Water Dept.
CA1910126		Pomona7.1186
Ponderosa Basin Mutual WTR Co
CA2210002		Mariposa CountyNDND0
Port Hueneme Water Dept
CA5610009		Ventura CountyNDND0
Porterville, City Of
CA5410010		Porterville22238
Porterville-Jones Corner
CA5410048		Tulare CountyNDND0
Potrero Elementary School
CA3700963		San Diego County188.364.29
Poway, City Of
CA3710015		PowayNDND0
Presidio of San Francisco
CA3810700		San Francisco County4ND7
Purissima Hills Water District
CA4310021		Santa Clara CountyNDND0
Quartz Hill Water Dist.
CA1910130		Los Angeles CountyNDND0
Rainbow Municipal WD
CA3710016		San Diego CountyNDND0
Ramona Municipal WD
CA3710019		San Diego CountyNDND0
Rancheritos MWC
CA3600200		San Bernardino CountyNDND0
Rancho California Water District
CA3310038		Riverside County11168
Rancho Los Amigos Hospital
CA1900679		Los Angeles County7.826.23
Rancho Murieta Community Servi
CA3410005		Sacramento CountyNDND0
Redlands City MUD-Water Div
CA3610037		Redlands4.35.83
Redwood Valley County Water District
CA2310008		Mendocino CountyNDND0
Reedley, City Of
CA1010027		ReedleyNDND0
Rialto, City Of
CA3610038		Rialto7.3ND7
Rincon Del Diablo MWD (Id-1)
CA3710018		San Diego CountyNDND1
Rio Dell, City Of
CA1210012		Rio DellNDND0
Rio Linda/Elverta Community Water Dist
CA3410018		Sacramento CountyNDND2
Ripon, City Of
CA3910007		Ripon5.2123
Riverbank, City Of
CA5010018		RiverbankNDND0
Riverside Csa #122-Mesa Verde
CA3310028		Riverside CountyNDND0
Riverside Highland Water Company
CA3610057		San Bernardino County18199
Riverside, City Of
CA3310031		RiversideND43
Rodney Strong Vineyards
CA4900897		Sonoma CountyNDND0
Rohnert Park, City Of
CA4910014		Rohnert ParkND4.53
Rosamond CSD
CA1510018		Kern CountyNDND0
Rowland Water District
CA1910194		Los Angeles CountyNDND1
Rubidoux Community SD
CA3310044		Riverside CountyNDND3
Rubio Canon Land & Water Association
CA1910140		Los Angeles County8.5197
Running Springs Water District
CA3610062		San Bernardino County15.9236.510
Russian River County Water District
CA4910008		Sonoma CountyNDND0
SFWP-Miners Ranch
CA0410006		Butte CountyNDND0
Sacramento International Airport [SWS]
CA3400139		Sacramento CountyNDND0
Sacramento Suburban Water District
CA3410001		Sacramento CountyNDND4
Salinas Valley State Prison
CA2710851		Monterey CountyNDND0
San Antonio Water Company
CA3610085		San Bernardino CountyNDND0
San Benito High School
CA3500571		San Benito CountyNDND0
San Bernardino City
CA3610039		San Bernardin0NDND4
San Diego, City Of
CA3710020		San DiegoNDND0
San Dieguito WD
CA3710021		San Diego County4.3ND4
San Fernando-City, Water Dept.
CA1910143		San FernandoNDND0
San Francisco International Airport
CA3810010		San Francisco CountyNDND0
San Francisco Regional Water System
CA3810001		San Francisco CountyNDND0
San Gabriel County WD
CA1910144		Los Angeles CountyNDND0
San Gabriel Valley WC - Fontana
CA3610041		San Bernardino CountyNDND0
San Gabriel Valley Water Co.-El Monte
CA1910039		Los Angeles CountyNDND2
San Gabriel Valley Water Co.-Montebello
CA1910189		Los Angeles CountyNDND0
San Jacinto, City Of
CA3310032		San JacintoNDND0
San Joaquin County - Lincoln Village
CA3910010		San Joaquin CountyNDND0
San Joaquin County-Mokelumne Acres
CA3910017		San Joaquin County8.313.56
San Joaquin River Club Inc
CA3910018		San Joaquin CountyNDND0
San Joaquin, City Of
CA1010034		San JoaquinNDND0
San Jose Water
CA4310011		Santa Clara CountyND6.22
San Juan Water District
CA3410021		Sacramento CountyNDND0
San Lorenzo Valley Water Dist
CA4410014		Santa Cruz CountyNDND1
San Luis Obispo Water Department
CA4010009		San Luis Obispo CountyNDND0
Santa Ana River Water Company
CA3310033		Riverside CountyNDND0
Santa Clarita Valley W.A.-Castaic Div.
CA1910247		Los Angeles CountyNDND0
Santa Clarita Valley W.A.-Newhall Div.
CA1910096		Los Angeles CountyNDND1
Santa Clarita Valley W.A.-Pinetree Div.
CA1910250		Los Angeles CountyNDND0
Santa Clarita Valley W.A.-Santa Clarita
CA1910017		Los Angeles County20.517.88
Santa Clarita Valley W.A.-Tesoro Div.
CA1910255		Los Angeles CountyNDND0
Santa Clarita Valley W.A.-Valencia Divis
CA1910240		Los Angeles County16.97.58
Santa Cruz Water Department
CA4410010		Santa Cruz CountyNDND0
Santa Fe I.D.
CA3710023		San Diego CountyNDND2
Santa Fe Springs - City, Water Dept.
CA1910245		Santa Fe Springs6.9145
Santa Margarita Water District
CA3010101		Orange CountyNDND0
Santa Maria Water Department
CA4210011		Santa Barbara CountyNDND0
Santa Monica-City, Water Division
CA1910146		Santa Monica4.6ND6
Santa Paula Water System
CA5610011		Ventura CountyNDND0
Santa Rosa, City Of
CA4910009		Santa RosaNDND0
Santa Ynez River Water Cons. Dist. Id#1
CA4210020		Santa Barbara CountyNDND0
Sativa-L.A. CWD
CA1910147		Los Angeles CountyND9.42
Sbdno County Service Area 64
CA3610121		San Bernardino CountyNDND0
Sbndo County Service Area 70J
CA3610125		San Bernardino CountyNDND0
Scotts Valley Water District
CA4410013		Santa Cruz CountyNDND2
Scwa - Arden Park Vista
CA3410002		Sacramento County5.58.33
Scwa - Laguna/Vineyard
CA3410029		Sacramento County14247
Scwa Mather-Sunrise
CA3410704		Sacramento CountyNDND0
Sea Ranch Water Company,The (Puc)
CA4910007		Sonoma CountyNDND1
Sebastopol, City Of
CA4910011		SebastopolNDND0
Serrano Water District
CA3010082		Orange CountyNDND2
Sfpuc City Distribution Division
CA3810011		San Francisco CountyNDND0
Shafter, City Of
CA1510019		ShafterNDND0
Sheep Creek Water Company
CA3610109		San Bernardino CountyNDND4
Sierra Madre-City, Water Dept.
CA1910148		Sierra MadreNDND0
Sierra Tahoe Main Lodge
CA0900659		El Dorado County5ND2
Signal Hill - City, Water Dept.
CA1910149		Signal HillNDND0
Slvwd - Felton Water System
CA4410002		Santa Cruz CountyNDND0
So. Cal. Edison Co.-Santa Catalina
CA1910006		Los Angeles CountyNDND1
Soledad, City Of
CA2710011		SoledadNDND0
Solvang Water Division
CA4210013		Santa Barbara CountyNDND1
Sonoma State University
CA4910027		Sonoma CountyNDND0
Sonoma, City Of
CA4910012		Sonoma6.2ND2
Soquel Creek Water District
CA4410017		Santa Cruz CountyNDND0
South Coast Water District
CA3010042		Orange CountyNDND1
South Gate-City, Water Dept.
CA1910152		South Gate10266
South Mesa WC
CA3310017		Riverside CountyNDND4
South Montebello Irrigation Dist.
CA1910153		Los Angeles County8.220.16
South Shore Recreation Area
CA0900649		El Dorado CountyNDND0
South Tahoe PUD - Main
CA0910002		El Dorado County6.15.28
Squaw Valley 8200 Water System
CA3103294		Placer CountyNDND0
St. Helena, City Of
CA2810004		St. HelenaNDND0
Stallion Springs CSD
CA1510025		Kern CountyNDND0
Stanford University
CA4310013		Santa Clara CountyNDND0
Storer Transportation
CA5000372		Stanislaus CountyNDND0
Suburban Water Systems - Whittier
CA1910174		Los Angeles County6.3136
Suburban Water Systems-Glendora
CA1910046		Los Angeles CountyNDND0
Suburban Water Systems-La Mirada
CA1910059		Los Angeles County7166
Suburban Water Systems-San Jose
CA1910205		Los Angeles CountyNDND4
Suisun-Solano Water Authority
CA4810005		Solano CountyNDND0
Sunny Slope Water Co.
CA1910157		Los Angeles CountyNDND0
Sunnyslope County Water Dist
CA3510003		San Benito County5.85.14
Sweetwater Authority
CA3710025		San Diego County11.45.78
Sweetwater Springs CWD - Guerneville
CA4910004		Sonoma CountyNDND0
Tahoe City PUD - Main
CA3110010		Tahoe CityNDND0
Tehachapi, City Of
CA1510020		TehachapiNDND0
Tejon Castac WD - I5 & Laval Rd
CA1503341		Kern CountyNDND0
Temescal Valley Water District
CA3310074		Riverside CountyNDND0
Templeton CSD
CA4010019		San Luis Obispo CountyNDND2
Terra Bella Irrigation District - TBT
CA5410038		Tulare CountyNDND0
Thermalito Water & Sewer Dist
CA0410008		Butte CountyND4.61
Thousand Oaks Water Dept
CA5610020		Ventura CountyNDND0
Thousand Trails San Benito Preserve
CA3500505		San Benito CountyNDND0
Tipton Community Services Dist
CA5410014		Tulare CountyNDND0
Torrance-City, Water Dept.
CA1910213		TorranceNDND0
Town of Discovery Bay
CA0710009		Contra Costa CountyNDND0
Town of Hillsborough
CA4110016		San Mateo CountyNDND0
Town of Yountville
CA2810007		Napa CountyNDND0
Trabuco Canyon Water District
CA3010094		Orange CountyNDND0
Tract 180 Mutual Water Co.
CA1910159		Los Angeles County6.5244
Tract 349 Mutual Water Co.
CA1910160		Los Angeles County8.236.54
Tracy, City Of
CA3910011		TracyNDND0
Trout Gulch Mutual Water Company
CA4400502		Santa Cruz CountyNDND0
Truckee-Donner PUD, Main
CA2910003		Nevada County4.6ND3
Tud - Columbia Water System
CA5510013		Tuolumne CountyNDND0
Tud - Sonora/Jamestown Water System
CA5510001		Tuolumne CountyNDND0
Tud - Upper Basin Water System
CA5510012		Tuolumne CountyNDND0
Tud-Wards Ferry Ranches
CA5500363		Tuolumne CountyNDND3
Tulare, City Of
CA5410015		TulareNDND0
Turlock, City Of
CA5010019		TurlockNDND0
Twentynine Palms Water District
CA3610049		San Bernardino CountyNDND0
USMC - 29 Palms
CA3610703		San Bernardino CountyNDND0
Uc Davis
CA5710009		Yolo CountyNDND0
Ukiah, City Of
CA2310003		Ukiah6.97.49
Union Public Utility District
CA0510001		Calaveras CountyNDND0
Upland, City Of
CA3610050		UplandNDND3
Us Army Fort Irwin
CA3610705		San Bernardino CountyNDND0
Valencia Heights Water Co.
CA1910163		Los Angeles County5.74.46
Vallecitos WD
CA3710002		San Diego CountyNDND0
Valley Center MWD
CA3710026		San Diego CountyNDND0
Valley County Water Dist.
CA1910009		Los Angeles CountyNDND0
Valley View Mutual Water Co.
CA1910165		Los Angeles CountyNDND0
Valley Water Co.
CA1910166		Los Angeles CountyNDND0
Valley of the Moon Water District
CA4910013		Sonoma County5.25.46
Vandenberg Village Comm. Serv. Dist.
CA4210017		Santa Barbara CountyNDND0
Vaughn WC Inc
CA1510029		Kern CountyNDND2
Ventura CWWD No. 1 - Moorpark
CA5610018		Ventura CountyNDND0
Ventura River Water District
CA5610022		Ventura CountyNDND0
Ventura WWD No. 8 - Simi Valley
CA5610023		Ventura CountyNDND0
Ventura Water Department
CA5610017		Ventura CountyNDND2
Vernon-City, Water Dept.
CA1910167		VernonNDND0
Victorville Water District
CA3610052		San Bernardino CountyNDND0
Vista Irrigation District
CA3710027		San Diego CountyNDND0
Walnut Park Mutual Water Co.
CA1910169		Los Angeles CountyNDND0
Walnut Valley Water District
CA1910234		Los Angeles CountyNDND0
Wasco St. Prison Reception CTR
CA1510801		Kern CountyNDND0
Wasco, City Of
CA1510021		WascoNDND0
Watsonville, City Of
CA4410011		Watsonville6.55.16
Weaverville C.S.D.
CA5310001		Trinity CountyND192
West Kern Water District
CA1510022		Kern CountyNDND0
West Valley Water District
CA3610004		San Bernardino CountyNDND0
Westborough County Water Dist
CA4110027		San Mateo CountyNDND0
Western Heights Water Company
CA3610053		San Bernardino CountyNDND0
Western MWD
CA3310049		Riverside CountyNDND3
Western MWD - Murrieta Division
CA3310036		Riverside County5.55.73
Whale Gulch Elementary School
CA2300847		Mendocino CountyNDND0
Whittier-City, Water Dept.
CA1910173		Whittier7.5196
Willits, City Of
CA2310004		WillitsNDND0
Willow County Water District
CA2310005		Mendocino CountyNDND0
Windsor, Town Of
CA4910017		Sonoma CountyNDND0
Wine Country Apartments
CA3900559		San Joaquin CountyNDND0
Winton Water & Sanitary Dist
CA2410010		Merced CountyNDND0
Woodlake, City Of
CA5410020		WoodlakeNDND0
Yorba Linda Water District
CA3010037		Orange CountyNDND2
Yosemite Spring Park Util Co
CA2010005		Madera County7.57.96
Yreka, City Of
CA4710011		YrekaNDND0
Yucaipa Valley Water District
CA3610055		San Bernardino County4.2ND4

ND = not detected (below the 4 ppt UCMR 5 reporting level). Values are the highest single sample result, not an annual average.

Source: EPA UCMR 5 final occurrence data (EPA page last updated 2026-08-28; samples collected January 2023 – December 2025) ↗.

PFAS disclaimer: PFAS results are copied from EPA's UCMR 5 dataset and describe samples taken at a public water system's entry points between 2023 and 2025, not water at any specific address. Levels may have changed since sampling (for example, after new treatment). “Not detected” means below EPA's UCMR 5 minimum reporting level, not zero. This is not a compliance determination or a water test. Contact your water utility for current information.