California Water Quality
Water hardness and quality data for 490 cities in California, USA.
107 mg/L
State average
🟡 Moderately Hard
Avg category
490
Cities tracked
Anaheim
Pop. 350,742
PFAS: 5.2 ppt
Full report →Antioch
Pop. 110,542
PFAS: 5.9 ppt
Full report →Bakersfield
Pop. 373,640
PFAS: 4 ppt
Full report →Berkeley
Pop. 120,972
PFAS: 7.6 ppt
Full report →Burbank
Pop. 105,319
PFAS: 5.7 ppt
Full report →Carlsbad
Pop. 114,746
PFAS: 5.3 ppt
Full report →Chico
Pop. 121,345
PFAS: 4.3 ppt
Full report →Chinatown
Pop. 100,574
PFAS: 4.7 ppt
Full report →Chula Vista
Pop. 265,757
PFAS: 5.5 ppt
Full report →Clovis
Pop. 104,180
PFAS: 3 ppt
Full report →Concord
Pop. 128,667
PFAS: 4.8 ppt
Full report →Corona
Pop. 164,226
PFAS: 5.8 ppt
Full report →Costa Mesa
Pop. 113,204
PFAS: 6.2 ppt
Full report →Daly City
Pop. 106,562
PFAS: 4.3 ppt
Full report →Downey
Pop. 114,219
PFAS: 4.1 ppt
Full report →East Los Angeles
Unincorporated area
Pop. 126,496
PFAS: 6.2 ppt
Full report →El Cajon
Pop. 103,679
PFAS: 7.2 ppt
Full report →El Monte
Pop. 116,732
PFAS: 7.6 ppt
Full report →Elk Grove
Pop. 166,913
PFAS: 3.5 ppt
Full report →Escondido
Pop. 151,038
PFAS: 4.8 ppt
Full report →Fairfield
Pop. 112,970
PFAS: 5.7 ppt
Full report →Fontana
Pop. 212,704
PFAS: 5.4 ppt
Full report →Fremont
Pop. 232,206
PFAS: 7.3 ppt
Full report →Fresno
Pop. 542,107
PFAS: 2.8 ppt
Full report →Fullerton
Pop. 140,847
PFAS: 3.4 ppt
Full report →Garden Grove
Pop. 175,393
PFAS: 3.9 ppt
Full report →Glendale
Pop. 201,020
PFAS: 5.6 ppt
Full report →Hayward
Pop. 158,289
PFAS: 7.3 ppt
Full report →Hollywood
Pop. 167,664
PFAS: 5.5 ppt
Full report →Huntington Beach
Pop. 201,899
PFAS: 2.9 ppt
Full report →Inglewood
Pop. 111,666
PFAS: 4.3 ppt
Full report →Irvine
Pop. 256,927
PFAS: 4.9 ppt
Full report →Koreatown
Pop. 124,281
PFAS: 7.5 ppt
Full report →Lancaster
Pop. 161,103
PFAS: 4.9 ppt
Full report →Long Beach
Pop. 474,140
PFAS: 5.6 ppt
Full report →Los Angeles
Pop. 3,820,914
PFAS: 5.3 ppt
Full report →Modesto
Pop. 211,266
PFAS: 7.1 ppt
Full report →Moreno Valley
Pop. 204,198
PFAS: 3.9 ppt
Full report →Murrieta
Pop. 109,830
PFAS: 6.1 ppt
Full report →Norwalk
Pop. 107,140
PFAS: 5.2 ppt
Full report →Oakland
Pop. 419,267
PFAS: 6.2 ppt
Full report →Oceanside
Pop. 175,691
PFAS: 6.6 ppt
Full report →Ontario
Pop. 171,214
PFAS: 3.1 ppt
Full report →Orange
Pop. 140,992
PFAS: 3.2 ppt
Full report →Oxnard
Pop. 207,254
PFAS: 4.4 ppt
Full report →Palmdale
Pop. 158,351
PFAS: 5.4 ppt
Full report →Pasadena
Pop. 142,250
PFAS: 6.7 ppt
Full report →Pomona
Pop. 153,266
PFAS: 7.1 ppt
Full report →Rancho Cucamonga
Pop. 175,236
PFAS: 5.6 ppt
Full report →Rialto
Pop. 103,132
PFAS: 3.3 ppt
Full report →Richmond
Pop. 109,708
PFAS: 3.5 ppt
Full report →Riverside
Pop. 317,261
PFAS: 4.3 ppt
Full report →Roseville
Pop. 130,269
PFAS: 6.2 ppt
Full report →Sacramento
Pop. 524,943
PFAS: 7.3 ppt
Full report →Salinas
Pop. 157,380
PFAS: 5.9 ppt
Full report →San Bernardino
Pop. 216,108
PFAS: 6.7 ppt
Full report →San Diego
Pop. 1,404,452
PFAS: 6.9 ppt
Full report →San Francisco
Pop. 827,526
PFAS: 7.1 ppt
Full report →San Jose
Pop. 997,368
PFAS: 7.5 ppt
Full report →San Mateo
Pop. 103,536
PFAS: 3.2 ppt
Full report →Santa Ana
Pop. 310,227
PFAS: 4.1 ppt
Full report →Santa Clara
Pop. 126,215
PFAS: 4.3 ppt
Full report →Santa Clarita
Pop. 182,371
PFAS: 4.4 ppt
Full report →Santa Maria
Pop. 105,093
PFAS: 4.6 ppt
Full report →Santa Rosa
Pop. 178,127
PFAS: 4.8 ppt
Full report →Simi Valley
Pop. 126,788
PFAS: 5.1 ppt
Full report →Stockton
Pop. 305,658
PFAS: 5.9 ppt
Full report →Sunnyvale
Pop. 155,805
PFAS: 3 ppt
Full report →Temecula
Pop. 110,003
PFAS: 5.5 ppt
Full report →Thousand Oaks
Pop. 129,339
PFAS: 7.4 ppt
Full report →Torrance
Pop. 143,592
PFAS: 3.7 ppt
Full report →Universal City
Pop. 105,000
PFAS: 7 ppt
Full report →Valencia
Pop. 148,456
PFAS: 3.1 ppt
Full report →Vallejo
Pop. 121,692
PFAS: 3.3 ppt
Full report →Van Nuys
Pop. 136,443
PFAS: 3.9 ppt
Full report →Victorville
Pop. 122,225
PFAS: 4.9 ppt
Full report →Visalia
Pop. 130,104
PFAS: 5.5 ppt
Full report →Vista
Pop. 100,890
PFAS: 5.6 ppt
Full report →West Covina
Pop. 108,484
PFAS: 3.3 ppt
Full report →Adelanto
Pop. 33,166
PFAS: 7.3 ppt
Full report →Alameda
Pop. 78,630
PFAS: 3.2 ppt
Full report →Alhambra
Pop. 85,551
PFAS: 3.8 ppt
Full report →Aliso Viejo
Pop. 50,195
PFAS: 4 ppt
Full report →Altadena
Pop. 42,777
PFAS: 4.6 ppt
Full report →Antelope
Pop. 45,770
PFAS: 5.7 ppt
Full report →Apple Valley
Pop. 72,174
PFAS: 6.2 ppt
Full report →Arcadia
Pop. 58,408
PFAS: 6.4 ppt
Full report →Arden-Arcade
Pop. 92,186
PFAS: 3.7 ppt
Full report →Azusa
Pop. 49,690
PFAS: 3.4 ppt
Full report →Baldwin Park
Pop. 77,071
PFAS: 4.2 ppt
Full report →Banning
Pop. 30,945
PFAS: 4.5 ppt
Full report →Bayview-Hunters Point
Pop. 34,835
PFAS: 4.4 ppt
Full report →Beaumont
Pop. 43,811
PFAS: 6.5 ppt
Full report →Bell
Pop. 36,205
PFAS: 6.9 ppt
Full report →Bell Gardens
Pop. 43,106
PFAS: 6.9 ppt
Full report →Bellflower
Pop. 78,441
PFAS: 7.1 ppt
Full report →Beverly Hills
Pop. 34,869
PFAS: 3.4 ppt
Full report →Boyle Heights
Neighborhood · Los Angeles
Pop. 92,785
PFAS: 3.1 ppt
Full report →Brea
Pop. 41,944
PFAS: 3.4 ppt
Full report →Brentwood
Pop. 58,968
PFAS: 3.5 ppt
Full report →Brentwood
Pop. 33,312
PFAS: 3.5 ppt
Full report →Buena Park
Pop. 83,270
PFAS: 5.2 ppt
Full report →Burlingame
Pop. 30,459
PFAS: 5.9 ppt
Full report →Calexico
Pop. 40,053
PFAS: 7.3 ppt
Full report →Camarillo
Pop. 67,608
PFAS: 3.4 ppt
Full report →Campbell
Pop. 41,117
PFAS: 4.3 ppt
Full report →Canoga Park
Pop. 60,578
PFAS: 4.8 ppt
Full report →Canyon Country
Pop. 59,530
PFAS: 4.8 ppt
Full report →Carmichael
Pop. 61,762
PFAS: 5.5 ppt
Full report →Carson
Pop. 93,281
PFAS: 5.9 ppt
Full report →Castro Valley
Pop. 61,388
PFAS: 6.7 ppt
Full report →Cathedral City
Pop. 53,826
PFAS: 6.8 ppt
Full report →Ceres
Pop. 47,963
PFAS: 3.2 ppt
Full report →Cerritos
Pop. 49,975
PFAS: 3.2 ppt
Full report →Chatsworth
Pop. 41,255
PFAS: 3.9 ppt
Full report →Chino
Pop. 85,595
PFAS: 4.8 ppt
Full report →Chino Hills
Pop. 78,309
PFAS: 4.9 ppt
Full report →Citrus Heights
Pop. 87,056
PFAS: 6.7 ppt
Full report →Claremont
Pop. 36,283
PFAS: 7 ppt
Full report →Coachella
Pop. 44,635
PFAS: 3.1 ppt
Full report →Colton
Pop. 54,621
PFAS: 4.2 ppt
Full report →Compton
Pop. 98,462
PFAS: 4.7 ppt
Full report →Covina
Pop. 48,984
PFAS: 6.8 ppt
Full report →Culver City
Pop. 39,717
PFAS: 3.8 ppt
Full report →Cupertino
Pop. 60,572
PFAS: 3.8 ppt
Full report →Cypress
Pop. 49,290
PFAS: 4 ppt
Full report →Dana Point
Pop. 34,181
PFAS: 4.4 ppt
Full report →Danville
Pop. 44,400
PFAS: 4.5 ppt
Full report →Davis
Pop. 67,666
PFAS: 4.9 ppt
Full report →Delano
Pop. 52,733
PFAS: 6.3 ppt
Full report →Diamond Bar
Pop. 56,897
PFAS: 7.3 ppt
Full report →Dublin
Pop. 57,721
PFAS: 4.6 ppt
Full report →Eastvale
Pop. 59,039
PFAS: 7.3 ppt
Full report →Echo Park
Pop. 43,832
PFAS: 3.4 ppt
Full report →El Centro
Pop. 43,956
PFAS: 7.3 ppt
Full report →El Dorado Hills
Pop. 42,108
PFAS: 7.5 ppt
Full report →Encinitas
Pop. 62,930
PFAS: 4.4 ppt
Full report →Encino
Pop. 44,581
PFAS: 4.5 ppt
Full report →Fair Oaks
Pop. 30,912
PFAS: 5.6 ppt
Full report →Fallbrook
Pop. 30,534
PFAS: 6.2 ppt
Full report →Florence-Graham
Pop. 63,387
PFAS: 4.5 ppt
Full report →Florin
Pop. 47,513
PFAS: 5.2 ppt
Full report →Folsom
Pop. 76,375
PFAS: 5.3 ppt
Full report →Foothill Farms
Pop. 33,121
PFAS: 5.5 ppt
Full report →Foster City
Pop. 33,477
PFAS: 6.2 ppt
Full report →Fountain Valley
Pop. 56,987
PFAS: 6.3 ppt
Full report →Gardena
Pop. 60,447
PFAS: 4 ppt
Full report →Gilroy
Pop. 53,231
PFAS: 5.2 ppt
Full report →Glendora
Pop. 52,009
PFAS: 5.6 ppt
Full report →Goleta
Pop. 30,944
PFAS: 6.6 ppt
Full report →Hacienda Heights
Unincorporated area
Pop. 54,038
PFAS: 5.3 ppt
Full report →Hanford
Pop. 55,659
PFAS: 5.9 ppt
Full report →Hawthorne
Pop. 88,451
PFAS: 7.1 ppt
Full report →Hemet
Pop. 83,861
PFAS: 3.2 ppt
Full report →Hesperia
Pop. 93,295
PFAS: 3.7 ppt
Full report →Highland
Pop. 54,854
PFAS: 4.3 ppt
Full report →Hollister
Pop. 37,462
PFAS: 5.4 ppt
Full report →Huntington Park
Pop. 59,430
PFAS: 2.9 ppt
Full report →Indio
Pop. 87,533
PFAS: 4.3 ppt
Full report →La Habra
Pop. 62,131
PFAS: 3 ppt
Full report →La Jolla
Pop. 42,808
PFAS: 3 ppt
Full report →La Mesa
Pop. 60,089
PFAS: 3.1 ppt
Full report →La Mirada
Pop. 49,520
PFAS: 3.1 ppt
Full report →La Presa
Pop. 34,169
PFAS: 3.2 ppt
Full report →La Puente
Pop. 40,745
PFAS: 3.3 ppt
Full report →La Quinta
Pop. 40,476
PFAS: 3.3 ppt
Full report →La Verne
Pop. 32,681
PFAS: 3.4 ppt
Full report →Laguna
Pop. 46,621
PFAS: 3.6 ppt
Full report →Laguna Hills
Pop. 31,748
PFAS: 3.7 ppt
Full report →Laguna Niguel
Pop. 65,806
PFAS: 3.7 ppt
Full report →Lake Elsinore
Pop. 61,981
PFAS: 4.1 ppt
Full report →Lake Forest
Pop. 82,492
PFAS: 4.1 ppt
Full report →Lakewood
Pop. 81,611
PFAS: 4.7 ppt
Full report →Lawndale
Pop. 33,430
PFAS: 6.1 ppt
Full report →Lincoln
Pop. 49,757
PFAS: 7.6 ppt
Full report →Livermore
Pop. 88,126
PFAS: 4.7 ppt
Full report →Lodi
Pop. 64,596
PFAS: 5 ppt
Full report →Lompoc
Pop. 44,164
PFAS: 5.4 ppt
Full report →Los Altos
Pop. 30,671
PFAS: 6.4 ppt
Full report →Los Banos
Pop. 37,457
PFAS: 6.6 ppt
Full report →Los Gatos
Pop. 30,705
PFAS: 6.7 ppt
Full report →Lynwood
Pop. 71,989
PFAS: 3.5 ppt
Full report →Madera
Pop. 64,208
PFAS: 3.9 ppt
Full report →Manhattan Beach
Pop. 35,818
PFAS: 4.8 ppt
Full report →Manteca
Pop. 75,448
PFAS: 5 ppt
Full report →Martinez
Pop. 38,137
PFAS: 6.3 ppt
Full report →Menifee
Pop. 87,174
PFAS: 4 ppt
Full report →Menlo Park
Pop. 33,449
PFAS: 4 ppt
Full report →Merced
Pop. 82,436
PFAS: 4.1 ppt
Full report →Mid-City
Pop. 83,000
PFAS: 4.7 ppt
Full report →Milpitas
Pop. 77,604
PFAS: 6.1 ppt
Full report →Mira Mesa
Pop. 70,000
PFAS: 6.4 ppt
Full report →Mission District
Pop. 47,234
PFAS: 6.6 ppt
Full report →Mission Viejo
Pop. 97,156
PFAS: 6.9 ppt
Full report →Monrovia
Pop. 37,463
PFAS: 2.9 ppt
Full report →Montclair
Pop. 38,690
PFAS: 3 ppt
Full report →Montebello
Pop. 63,921
PFAS: 3.1 ppt
Full report →Monterey Park
Pop. 61,468
PFAS: 3.3 ppt
Full report →Moorpark
Pop. 36,104
PFAS: 3.7 ppt
Full report →Morgan Hill
Pop. 42,948
PFAS: 4 ppt
Full report →Mountain View
Pop. 80,435
PFAS: 5.3 ppt
Full report →Napa
Pop. 80,434
PFAS: 6.4 ppt
Full report →National City
Pop. 61,060
PFAS: 6.6 ppt
Full report →Newark
Pop. 45,336
PFAS: 2.9 ppt
Full report →Newport Beach
Pop. 87,127
PFAS: 3.1 ppt
Full report →North Highlands
Unincorporated area
Pop. 42,694
PFAS: 4.5 ppt
Full report →North Hills
Neighborhood · Los Angeles
Pop. 56,946
PFAS: 6.9 ppt
Full report →North Hollywood
Neighborhood · Los Angeles
Pop. 64,587
PFAS: 4.5 ppt
Full report →Northridge
Pop. 68,469
PFAS: 5.1 ppt
Full report →Novato
Pop. 55,530
PFAS: 5.3 ppt
Full report →Oakley
Pop. 39,813
PFAS: 6.2 ppt
Full report →Oildale
Pop. 32,684
PFAS: 6.8 ppt
Full report →Orangevale
Pop. 33,960
PFAS: 3.3 ppt
Full report →Pacifica
Pop. 39,260
PFAS: 4.9 ppt
Full report →Palm Desert
Pop. 51,869
PFAS: 5.3 ppt
Full report →Palm Springs
Pop. 47,371
PFAS: 5.3 ppt
Full report →Palo Alto
Pop. 66,853
PFAS: 5.5 ppt
Full report →Paramount
Pop. 55,412
PFAS: 6.2 ppt
Full report →Perris
Pop. 74,971
PFAS: 3.3 ppt
Full report →Petaluma
Pop. 60,438
PFAS: 3.4 ppt
Full report →Pico Rivera
Pop. 64,218
PFAS: 3.9 ppt
Full report →Pittsburg
Pop. 69,424
PFAS: 5.7 ppt
Full report →Placentia
Pop. 52,495
PFAS: 5.9 ppt
Full report →Pleasant Hill
Pop. 34,810
PFAS: 6.2 ppt
Full report →Pleasanton
Pop. 79,510
PFAS: 6.3 ppt
Full report →Porterville
Pop. 56,058
PFAS: 2.8 ppt
Full report →Poway
Pop. 50,157
PFAS: 3.2 ppt
Full report →Rancho Cordova
Pop. 71,017
PFAS: 5.5 ppt
Full report →Rancho Palos Verdes
Pop. 42,732
PFAS: 5.7 ppt
Full report →Rancho Penasquitos
Pop. 60,000
PFAS: 5.7 ppt
Full report →Rancho Santa Margarita
Pop. 49,324
PFAS: 5.8 ppt
Full report →Redding
Pop. 91,582
PFAS: 7.4 ppt
Full report →Redlands
Pop. 71,035
PFAS: 7.1 ppt
Full report →Redondo Beach
Pop. 68,166
PFAS: 7.1 ppt
Full report →Redwood City
Pop. 85,288
PFAS: 7.2 ppt
Full report →Reseda
Pop. 65,000
PFAS: 3 ppt
Full report →Rocklin
Pop. 61,213
PFAS: 5.2 ppt
Full report →Rohnert Park
Pop. 42,407
PFAS: 5.6 ppt
Full report →Rosemead
Pop. 54,908
PFAS: 6.2 ppt
Full report →Rowland Heights
Unincorporated area
Pop. 48,993
PFAS: 6.7 ppt
Full report →Rubidoux
Pop. 34,280
PFAS: 6.8 ppt
Full report →San Bruno
Pop. 43,185
PFAS: 6.8 ppt
Full report →San Clemente
Pop. 65,526
PFAS: 6.8 ppt
Full report →San Dimas
Pop. 34,630
PFAS: 7 ppt
Full report →San Gabriel
Pop. 40,424
PFAS: 7.3 ppt
Full report →San Jacinto
Pop. 46,951
PFAS: 7.4 ppt
Full report →San Juan Capistrano
Pop. 36,454
PFAS: 2.8 ppt
Full report →San Leandro
Pop. 90,712
PFAS: 2.9 ppt
Full report →San Luis Obispo
Pop. 47,339
PFAS: 3 ppt
Full report →San Marcos
Pop. 92,931
PFAS: 3.1 ppt
Full report →San Pablo
Pop. 30,407
PFAS: 3.4 ppt
Full report →San Pedro
Pop. 83,556
PFAS: 3.4 ppt
Full report →San Rafael
Pop. 59,162
PFAS: 3.5 ppt
Full report →San Ramon
Pop. 76,134
PFAS: 3.5 ppt
Full report →Santa Barbara
Pop. 91,842
PFAS: 4.2 ppt
Full report →Santa Cruz
Pop. 64,220
PFAS: 4.4 ppt
Full report →Santa Monica
Pop. 93,220
PFAS: 4.7 ppt
Full report →Santa Paula
Pop. 30,546
PFAS: 4.7 ppt
Full report →Santee
Pop. 57,787
PFAS: 5.1 ppt
Full report →Saratoga
Pop. 30,968
PFAS: 5.2 ppt
Full report →Sawtelle
Pop. 39,757
PFAS: 5.6 ppt
Full report →Seaside
Pop. 33,025
PFAS: 6.4 ppt
Full report →Sherman Oaks
Pop. 52,677
PFAS: 3.7 ppt
Full report →Silver Lake
Pop. 32,890
PFAS: 3.4 ppt
Full report →South Gate
Pop. 96,401
PFAS: 3.2 ppt
Full report →South San Francisco
Pop. 67,271
PFAS: 3.5 ppt
Full report →South Whittier
Unincorporated area
Pop. 57,156
PFAS: 3.7 ppt
Full report →Stanton
Pop. 38,872
PFAS: 5.2 ppt
Full report →Studio City
Pop. 34,034
PFAS: 6.7 ppt
Full report →Sylmar
Pop. 79,614
PFAS: 4.4 ppt
Full report →Temple City
Pop. 36,365
PFAS: 5.6 ppt
Full report →Tracy
Pop. 87,075
PFAS: 4 ppt
Full report →Tulare
Pop. 62,315
PFAS: 5.1 ppt
Full report →Turlock
Pop. 72,292
PFAS: 5.6 ppt
Full report →Tustin
Pop. 80,583
PFAS: 5.8 ppt
Full report →Union City
Pop. 74,494
PFAS: 6.6 ppt
Full report →Upland
Pop. 76,443
PFAS: 7.2 ppt
Full report →Vacaville
Pop. 96,803
PFAS: 3 ppt
Full report →Valley Glen
Pop. 60,000
PFAS: 5 ppt
Full report →Venice
Pop. 40,885
PFAS: 4.2 ppt
Full report →Ventura
Pop. 96,769
PFAS: 4.2 ppt
Full report →Vermont Square
Pop. 47,555
PFAS: 4.7 ppt
Full report →Walnut
Pop. 30,237
PFAS: 6.3 ppt
Full report →Walnut Creek
Pop. 68,910
PFAS: 6.3 ppt
Full report →Watsonville
Pop. 53,628
PFAS: 7.3 ppt
Full report →West Hills
Neighborhood · Los Angeles
Pop. 41,426
PFAS: 4.5 ppt
Full report →West Hollywood
Pop. 36,222
PFAS: 3.5 ppt
Full report →West Sacramento
Pop. 52,721
PFAS: 3.8 ppt
Full report →Westminster
Pop. 92,114
PFAS: 4.1 ppt
Full report →Westmont
Pop. 31,853
PFAS: 4.2 ppt
Full report →Whittier
Pop. 87,438
PFAS: 5.4 ppt
Full report →Wildomar
Pop. 35,632
PFAS: 5.7 ppt
Full report →Willowbrook
Pop. 35,983
PFAS: 6.7 ppt
Full report →Wilmington
Pop. 52,000
PFAS: 6.7 ppt
Full report →Winnetka
Pop. 47,000
PFAS: 7.3 ppt
Full report →Woodland
Pop. 58,567
PFAS: 3.1 ppt
Full report →Woodland Hills
Pop. 70,000
PFAS: 3.1 ppt
Full report →Yorba Linda
Pop. 67,973
PFAS: 4 ppt
Full report →Yuba City
Pop. 66,941
PFAS: 4.2 ppt
Full report →Yucaipa
Pop. 53,328
PFAS: 4.2 ppt
Full report →Agoura
Pop. 20,537
PFAS: 2.8 ppt
Full report →Agoura Hills
Pop. 20,915
PFAS: 2.8 ppt
Full report →Agua Caliente
Pop. 27,090
PFAS: 2.9 ppt
Full report →Alamo
Pop. 14,570
PFAS: 3.3 ppt
Full report →Albany
Pop. 19,735
PFAS: 3.4 ppt
Full report →Alpine
Pop. 14,236
PFAS: 4.4 ppt
Full report →Alum Rock
Pop. 15,536
PFAS: 4.7 ppt
Full report →American Canyon
Pop. 20,554
PFAS: 5 ppt
Full report →Arcata
Pop. 17,843
PFAS: 5.8 ppt
Full report →Arroyo Grande
Pop. 18,108
PFAS: 7 ppt
Full report →Artesia
Pop. 16,961
PFAS: 7.1 ppt
Full report →Arvin
Pop. 20,876
PFAS: 7.2 ppt
Full report →Ashland
Pop. 21,925
PFAS: 7.4 ppt
Full report →Atascadero
Pop. 29,819
PFAS: 7.6 ppt
Full report →Atwater
Pop. 29,237
PFAS: 2.9 ppt
Full report →Atwater Village
Pop. 15,455
PFAS: 2.9 ppt
Full report →Auburn
Pop. 13,776
PFAS: 3 ppt
Full report →Avenal
Pop. 13,301
PFAS: 3.2 ppt
Full report →Avocado Heights
Pop. 15,411
PFAS: 3.3 ppt
Full report →Barstow
Pop. 23,692
PFAS: 5 ppt
Full report →Barstow Heights
Pop. 24,202
PFAS: 5 ppt
Full report →Bay Point
Pop. 21,534
PFAS: 5.5 ppt
Full report →Bayside
Pop. 17,132
PFAS: 6.5 ppt
Full report →Belmont
Pop. 27,218
PFAS: 7.1 ppt
Full report →Benicia
Pop. 28,167
PFAS: 7.3 ppt
Full report →Big Bear City
Pop. 12,304
PFAS: 3.6 ppt
Full report →Bloomington
Pop. 23,851
PFAS: 6 ppt
Full report →Blythe
Pop. 19,208
PFAS: 6.4 ppt
Full report →Bonita
Pop. 12,538
PFAS: 7 ppt
Full report →Bostonia
Pop. 15,379
PFAS: 7.4 ppt
Full report →Brawley
Pop. 25,897
PFAS: 3.3 ppt
Full report →Calabasas
Pop. 23,058
PFAS: 7.1 ppt
Full report →California City
Pop. 13,277
PFAS: 7.4 ppt
Full report →Cameron Park
Pop. 18,228
PFAS: 3.6 ppt
Full report →Carpinteria
Pop. 13,727
PFAS: 5.7 ppt
Full report →Casa de Oro-Mount Helix
Pop. 18,762
PFAS: 4.1 ppt
Full report →Castaic
Pop. 19,015
PFAS: 6.4 ppt
Full report →Cherryland
Pop. 14,728
PFAS: 4.2 ppt
Full report →Chowchilla
Pop. 18,510
PFAS: 5.1 ppt
Full report →Clearlake
Pop. 15,182
PFAS: 7.4 ppt
Full report →Coalinga
Pop. 16,564
PFAS: 3.1 ppt
Full report →Commerce
Pop. 13,081
PFAS: 4.5 ppt
Full report →Corcoran
Pop. 22,477
PFAS: 5.6 ppt
Full report →Coronado
Pop. 24,812
PFAS: 5.9 ppt
Full report →Coto De Caza
Pop. 14,866
PFAS: 6.2 ppt
Full report →Cudahy
Pop. 24,311
PFAS: 3.6 ppt
Full report →Desert Hot Springs
Pop. 28,335
PFAS: 6.7 ppt
Full report →Dinuba
Pop. 23,702
PFAS: 7.6 ppt
Full report →Discovery Bay
Pop. 13,352
PFAS: 2.8 ppt
Full report →Dixon
Pop. 19,390
PFAS: 3 ppt
Full report →Duarte
Pop. 21,990
PFAS: 4.6 ppt
Full report →East Hemet
Pop. 17,418
PFAS: 6.1 ppt
Full report →East Palo Alto
Pop. 29,662
PFAS: 6.2 ppt
Full report →East Rancho Dominguez
Pop. 15,135
PFAS: 5.8 ppt
Full report →East San Gabriel
Pop. 14,874
PFAS: 6.3 ppt
Full report →El Camino Real
Pop. 15,999
PFAS: 6.1 ppt
Full report →El Cerrito
Pop. 23,549
PFAS: 7.3 ppt
Full report →El Segundo
Pop. 17,037
PFAS: 3 ppt
Full report →El Sobrante
Pop. 12,669
PFAS: 3 ppt
Full report →Eureka
Pop. 27,017
PFAS: 4.5 ppt
Full report →Fillmore
Pop. 15,548
PFAS: 4.5 ppt
Full report →Galt
Pop. 25,303
PFAS: 3.7 ppt
Full report →Glen Avon
Pop. 20,199
PFAS: 5.5 ppt
Full report →Grand Terrace
Pop. 12,464
PFAS: 7.6 ppt
Full report →Granite Bay
Pop. 20,402
PFAS: 2.9 ppt
Full report →Grass Valley
Pop. 12,944
PFAS: 3.3 ppt
Full report →Greenfield
Pop. 17,184
PFAS: 4 ppt
Full report →Grover Beach
Pop. 13,600
PFAS: 4.8 ppt
Full report →Half Moon Bay
Pop. 12,657
PFAS: 5.5 ppt
Full report →Hawaiian Gardens
Pop. 14,592
PFAS: 7 ppt
Full report →Hercules
Pop. 25,314
PFAS: 3.5 ppt
Full report →Hermosa Beach
Pop. 19,860
PFAS: 3.6 ppt
Full report →Imperial
Pop. 17,095
PFAS: 3.5 ppt
Full report →Imperial Beach
Pop. 27,408
PFAS: 3.5 ppt
Full report →Isla Vista
Pop. 23,096
PFAS: 5 ppt
Full report →Jurupa Valley
Pop. 21,930
PFAS: 6.4 ppt
Full report →Kerman
Pop. 14,475
PFAS: 5.9 ppt
Full report →King City
Pop. 13,902
PFAS: 6.5 ppt
Full report →La Canada Flintridge
Pop. 20,246
PFAS: 2.9 ppt
Full report →La Crescenta-Montrose
Pop. 19,653
PFAS: 5.1 ppt
Full report →La Palma
Pop. 15,904
PFAS: 3.2 ppt
Full report →Ladera Ranch
Pop. 22,980
PFAS: 3.5 ppt
Full report →Lafayette
Pop. 25,843
PFAS: 3.6 ppt
Full report →Laguna Beach
Pop. 23,365
PFAS: 3.6 ppt
Full report →Laguna Woods
Pop. 16,406
PFAS: 3.8 ppt
Full report →Lake Arrowhead
Pop. 12,424
PFAS: 3.9 ppt
Full report →Lake Los Angeles
Pop. 12,328
PFAS: 4.2 ppt
Full report →Lakeside
Pop. 20,648
PFAS: 4.6 ppt
Full report →Lamont
Pop. 15,120
PFAS: 4.8 ppt
Full report →Larkspur
Pop. 12,417
PFAS: 5.2 ppt
Full report →Lathrop
Pop. 20,866
PFAS: 5.8 ppt
Full report →Lemon Grove
Pop. 26,709
PFAS: 6.7 ppt
Full report →Lemoore
Pop. 25,647
PFAS: 6.7 ppt
Full report →Lennox
Pop. 22,753
PFAS: 6.7 ppt
Full report →Linda
Pop. 17,773
PFAS: 3 ppt
Full report →Lindsay
Pop. 13,217
PFAS: 3.2 ppt
Full report →Live Oak
Pop. 17,158
PFAS: 4.5 ppt
Full report →Livingston
Pop. 13,902
PFAS: 4.7 ppt
Full report →Loma Linda
Pop. 24,045
PFAS: 5.2 ppt
Full report →Lomita
Pop. 20,785
PFAS: 5.3 ppt
Full report →Los Osos
Pop. 14,276
PFAS: 6.8 ppt
Full report →Malibu
Pop. 12,965
PFAS: 4.5 ppt
Full report →Marina
Pop. 21,229
PFAS: 5.6 ppt
Full report →Maywood
Pop. 27,888
PFAS: 7 ppt
Full report →McFarland
Pop. 13,985
PFAS: 7.5 ppt
Full report →McKinleyville
Pop. 15,177
PFAS: 3 ppt
Full report →Mead Valley
Pop. 18,510
PFAS: 3.4 ppt
Full report →Mill Valley
Pop. 14,394
PFAS: 5.7 ppt
Full report →Millbrae
Pop. 22,795
PFAS: 5.7 ppt
Full report →Monterey
Pop. 28,338
PFAS: 3.2 ppt
Full report →Moraga
Pop. 17,256
PFAS: 3.8 ppt
Full report →Nipomo
Pop. 16,714
PFAS: 3.5 ppt
Full report →Noe Valley
Pop. 22,893
PFAS: 7.4 ppt
Full report →Norco
Pop. 26,289
PFAS: 3.7 ppt
Full report →North Auburn
Pop. 13,022
PFAS: 3.8 ppt
Full report →North Fair Oaks
Pop. 14,687
PFAS: 4 ppt
Full report →North Tustin
Unincorporated area
Pop. 24,917
PFAS: 5.8 ppt
Full report →Northwood
Pop. 22,218
PFAS: 6.1 ppt
Full report →Oak Park
Pop. 13,811
PFAS: 5.9 ppt
Full report →Oakdale
Pop. 22,259
PFAS: 6.1 ppt
Full report →Olivehurst
Pop. 13,656
PFAS: 7.5 ppt
Full report →Orcutt
Pop. 28,905
PFAS: 3.4 ppt
Full report →Orinda
Pop. 19,279
PFAS: 3.5 ppt
Full report →Oroville
Pop. 16,260
PFAS: 3.6 ppt
Full report →Pacific Grove
Pop. 15,674
PFAS: 4.9 ppt
Full report →Pacific Palisades
Pop. 23,121
PFAS: 4.8 ppt
Full report →Palos Verdes Estates
Pop. 13,682
PFAS: 5.7 ppt
Full report →Paradise
Pop. 26,476
PFAS: 6 ppt
Full report →Parkside
Pop. 16,874
PFAS: 7.4 ppt
Full report →Parkway
Pop. 14,670
PFAS: 6.5 ppt
Full report →Parlier
Pop. 15,138
PFAS: 6.6 ppt
Full report →Paso Robles
Pop. 27,157
PFAS: 6.8 ppt
Full report →Patterson
Pop. 21,498
PFAS: 6.9 ppt
Full report →Pedley
Pop. 12,672
PFAS: 7.4 ppt
Full report →Phelan
Pop. 14,304
PFAS: 3.7 ppt
Full report →Pinole
Pop. 19,269
PFAS: 5.2 ppt
Full report →Port Hueneme
Pop. 22,423
PFAS: 7.4 ppt
Full report →Prunedale
Pop. 17,560
PFAS: 4 ppt
Full report →Ramona
Pop. 20,292
PFAS: 5.3 ppt
Full report →Rancho Mirage
Pop. 18,083
PFAS: 5.7 ppt
Full report →Rancho San Diego
Pop. 21,208
PFAS: 5.8 ppt
Full report →Red Bluff
Pop. 14,131
PFAS: 7.3 ppt
Full report →Reedley
Pop. 25,569
PFAS: 7.5 ppt
Full report →Ridgecrest
Pop. 28,780
PFAS: 3.6 ppt
Full report →Rio Linda
Pop. 15,106
PFAS: 4 ppt
Full report →Ripon
Pop. 15,151
PFAS: 4.1 ppt
Full report →Riverbank
Pop. 24,122
PFAS: 4.3 ppt
Full report →Rosamond
Pop. 18,150
PFAS: 5.9 ppt
Full report →Rosedale
Pop. 14,058
PFAS: 6.1 ppt
Full report →Rosemont
Pop. 22,681
PFAS: 6.2 ppt
Full report →Salida
Pop. 13,722
PFAS: 5.9 ppt
Full report →San Anselmo
Pop. 12,653
PFAS: 6.5 ppt
Full report →San Carlos
Pop. 29,931
PFAS: 6.8 ppt
Full report →San Fernando
Pop. 24,931
PFAS: 7.1 ppt
Full report →San Lorenzo
Pop. 23,452
PFAS: 2.9 ppt
Full report →San Marino
Pop. 13,464
PFAS: 3.2 ppt
Full report →Sanger
Pop. 24,950
PFAS: 4 ppt
Full report →Santa Fe Springs
Pop. 18,026
PFAS: 4.5 ppt
Full report →Seal Beach
Pop. 24,619
PFAS: 6.3 ppt
Full report →Selma
Pop. 24,414
PFAS: 6.8 ppt
Full report →Shadow Hills
Pop. 13,000
PFAS: 2.9 ppt
Full report →Shafter
Pop. 18,336
PFAS: 2.9 ppt
Full report →Solana Beach
Pop. 13,449
PFAS: 6.9 ppt
Full report →Soledad
Pop. 25,003
PFAS: 7 ppt
Full report →South El Monte
Pop. 20,878
PFAS: 2.8 ppt
Full report →South Lake Tahoe
Pop. 21,706
PFAS: 3.4 ppt
Full report →South Pasadena
Pop. 26,151
PFAS: 3.5 ppt
Full report →South San Jose Hills
Pop. 20,551
PFAS: 3.6 ppt
Full report →South Yuba City
Pop. 15,217
PFAS: 3.7 ppt
Full report →Spring Valley
Pop. 28,205
PFAS: 4.5 ppt
Full report →Stanford
Pop. 13,809
PFAS: 5 ppt
Full report →Stevenson Ranch
Pop. 17,557
PFAS: 4.1 ppt
Full report →Stonegate
Pop. 18,938
PFAS: 6.1 ppt
Full report →Suisun
Pop. 28,111
PFAS: 7 ppt
Full report →Sun City
Pop. 19,579
PFAS: 7.5 ppt
Full report →Sunland
Pop. 15,316
PFAS: 2.9 ppt
Full report →Susanville
Pop. 15,247
PFAS: 6.8 ppt
Full report →Tehachapi
Pop. 13,021
PFAS: 5.3 ppt
Full report →Truckee
Pop. 16,299
PFAS: 4.9 ppt
Full report →Tujunga
Pop. 26,527
PFAS: 5.1 ppt
Full report →Tustin Legacy
Pop. 21,428
PFAS: 6.1 ppt
Full report →Twentynine Palms
Pop. 26,025
PFAS: 5.9 ppt
Full report →UC Irvine
Pop. 15,807
PFAS: 6.1 ppt
Full report →Ukiah
Pop. 15,917
PFAS: 6.4 ppt
Full report →Valinda
Pop. 22,822
PFAS: 3.2 ppt
Full report →Valle Vista
Pop. 14,578
PFAS: 3.2 ppt
Full report →Vincent
Pop. 15,922
PFAS: 5.2 ppt
Full report →Vincent
Pop. 15,922
PFAS: 6.8 ppt
Full report →Vineyard
Pop. 24,836
PFAS: 4.4 ppt
Full report →Visitacion Valley
Pop. 22,534
PFAS: 7.5 ppt
Full report →Walnut Park
Pop. 15,966
PFAS: 6.4 ppt
Full report →Wasco
Pop. 26,279
PFAS: 4.2 ppt
Full report →West Carson
Pop. 21,699
PFAS: 3.2 ppt
Full report →West Puente Valley
Pop. 22,636
PFAS: 3.7 ppt
Full report →West Whittier-Los Nietos
Unincorporated area
Pop. 25,540
PFAS: 6.9 ppt
Full report →Westpark
Pop. 22,993
PFAS: 6.1 ppt
Full report →Windsor
Pop. 27,464
PFAS: 7.1 ppt
Full report →Winter Gardens
Pop. 20,631
PFAS: 7.3 ppt
Full report →Woodbridge
Pop. 24,966
PFAS: 6.1 ppt
Full report →Woodcrest
Pop. 14,347
PFAS: 3 ppt
Full report →Yucca Valley
Pop. 21,600
PFAS: 4.3 ppt
Full report →