Illinois Tap Water Quality
Explore tap water quality data for counties across Illinois. View water system reports, track violations, monitor drinking water safety, and check fluoridation status in your community.
Total Counties
1,107
Communities with public water systems
Total Population
12,134,826
Residents served by public water systems
Water Systems
1,771
Public water systems statewide
Serious Violators
9
Systems with serious violations
Counties
1,107
With water systems
Population
12,134,826
Served by water systems
Water Systems
1,771
Total water systems
Violators
9
Systems with serious violations
Searching by your address yields the most accurate results. Searching by town or water system may not show all systems due to how the EPA categorizes data. Some towns may be listed under counties, and water system boundaries don't always align with town boundaries.
Filter Results
Illinois Counties
Abingdon
Population: 3,275
Water Systems: 1
Adams
Population: 17,332
Water Systems: 7
Addison
Population: 38,017
Water Systems: 1
Albany
Population: 950
Water Systems: 1
Albers
Population: 1,379
Water Systems: 1
Albion
Population: 5,219
Water Systems: 2
Aledo
Population: 3,470
Water Systems: 1
Alexander
Population: 4,858
Water Systems: 3
Alexis
Population: 836
Water Systems: 1
Algonquin
Population: 29,700
Water Systems: 1
Alhambra
Population: 1,555
Water Systems: 1
Allendale
Population: 475
Water Systems: 1
Allerton
Population: 304
Water Systems: 1
Alma
Population: 413
Water Systems: 1
Alpha
Population: 700
Water Systems: 1
Alsey
Population: 475
Water Systems: 1
Alsip
Population: 19,063
Water Systems: 1
Altamont
Population: 2,300
Water Systems: 1
Alton
Population: 46,985
Water Systems: 3
Altona
Population: 483
Water Systems: 1
Alvan
Population: 270
Water Systems: 1
Amboy
Population: 2,500
Water Systems: 1
Anchor
Population: 155
Water Systems: 1
Andalusia
Population: 1,174
Water Systems: 1
Andover
Population: 565
Water Systems: 1
Anna
Population: 5,327
Water Systems: 2
Annawan
Population: 850
Water Systems: 1
Antioch
Population: 14,199
Water Systems: 2
Apple River
Population: 356
Water Systems: 1
Arcola
Population: 2,750
Water Systems: 1
Arenzville
Population: 419
Water Systems: 1
Argenta
Population: 900
Water Systems: 1
Arlington
Population: 250
Water Systems: 1
Arlington Heights
Population: 73,320
Water Systems: 1
Armington
Population: 310
Water Systems: 1
Arrowsmith
Population: 315
Water Systems: 1
Arthur
Population: 2,300
Water Systems: 1
Ashkum
Population: 724
Water Systems: 1
Ashland
Population: 1,333
Water Systems: 1
Ashley
Population: 760
Water Systems: 1
Ashmore
Population: 637
Water Systems: 1
Ashton
Population: 967
Water Systems: 1
Assumption
Population: 1,315
Water Systems: 1
Astoria
Population: 1,322
Water Systems: 1
Athens
Population: 4,316
Water Systems: 1
Atkinson
Population: 945
Water Systems: 1
Atlanta
Population: 1,692
Water Systems: 1
Atwood
Population: 1,250
Water Systems: 1
Auburn
Population: 4,574
Water Systems: 1
Augusta
Population: 587
Water Systems: 1
Aurora
Population: 200,300
Water Systems: 2
Ava
Population: 1,126
Water Systems: 1
Aviston
Population: 2,545
Water Systems: 1
Avon
Population: 920
Water Systems: 1
Baldwin
Population: 601
Water Systems: 1
Bannockburn
Population: 1,013
Water Systems: 1
Bardolph
Population: 303
Water Systems: 1
Barrington
Population: 10,327
Water Systems: 1
Barry
Population: 1,318
Water Systems: 1
Bartelso
Population: 635
Water Systems: 1
Bartlett
Population: 41,103
Water Systems: 1
Batavia
Population: 26,098
Water Systems: 1
Batchtown
Population: 290
Water Systems: 1
Baylis
Population: 205
Water Systems: 1
Beach Park
Population: 8,710
Water Systems: 1
Beardstown
Population: 6,123
Water Systems: 1
Beaverville
Population: 450
Water Systems: 1
Beckemeyer
Population: 913
Water Systems: 1
Bedford Park
Population: 602
Water Systems: 1
Beecher
Population: 5,213
Water Systems: 2
Belknap
Population: 516
Water Systems: 1
Belle Rive
Population: 2,103
Water Systems: 2
Belleville
Population: 611
Water Systems: 2
Bellevue
Population: 325
Water Systems: 1
Bellflower
Population: 357
Water Systems: 1
Bellmont
Population: 297
Water Systems: 1
Bellwood
Population: 19,157
Water Systems: 2
Belvidere
Population: 25,780
Water Systems: 2
Bement
Population: 1,661
Water Systems: 1
Benld
Population: 1,618
Water Systems: 1
Bensenville
Population: 18,537
Water Systems: 1
Benson
Population: 450
Water Systems: 1
Benton
Population: 8,398
Water Systems: 1
Berkeley
Population: 5,214
Water Systems: 1
Berwyn
Population: 58,000
Water Systems: 1
Bethalto
Population: 15,210
Water Systems: 1
Bethany
Population: 1,475
Water Systems: 1
Biggsville
Population: 273
Water Systems: 1
Bishop Hill
Population: 110
Water Systems: 1
Blandinsville
Population: 775
Water Systems: 1
Bloomington
Population: 80,510
Water Systems: 5
Blue Island
Population: 23,463
Water Systems: 1
Blue Mound
Population: 1,300
Water Systems: 1
Bluffs
Population: 748
Water Systems: 1
Bluford
Population: 1,878
Water Systems: 1
Bolingbrook
Population: 73,978
Water Systems: 1
Bond
Population: 6,838
Water Systems: 1
Bone Gap
Population: 207
Water Systems: 1
Bonnie
Population: 437
Water Systems: 1
Boone
Population: 8,527
Water Systems: 5
Bowen
Population: 494
Water Systems: 1
Braceville
Population: 900
Water Systems: 1
Bradford
Population: 676
Water Systems: 1
Braidwood
Population: 6,200
Water Systems: 1
Breese
Population: 4,772
Water Systems: 1
Bridgeport
Population: 2,572
Water Systems: 1
Bridgeview
Population: 16,467
Water Systems: 1
Brighton
Population: 5,041
Water Systems: 1
Brimfield
Population: 856
Water Systems: 1
Broadlands
Population: 330
Water Systems: 1
Broadview
Population: 7,848
Water Systems: 2
Broadwell
Population: 169
Water Systems: 1
Brocton
Population: 288
Water Systems: 1
Brookfield
Population: 18,777
Water Systems: 2
Brookport
Population: 989
Water Systems: 1
Broughton
Population: 242
Water Systems: 1
Browning
Population: 175
Water Systems: 1
Brownstown
Population: 740
Water Systems: 1
Brussels
Population: 245
Water Systems: 1
Bryant
Population: 267
Water Systems: 1
Buckingham
Population: 300
Water Systems: 1
Buckley
Population: 600
Water Systems: 1
Buckner
Population: 494
Water Systems: 1
Buda
Population: 482
Water Systems: 1
Buffalo Grove
Population: 44,128
Water Systems: 1
Bunker Hill
Population: 1,760
Water Systems: 1
Burbank
Population: 30,000
Water Systems: 1
Bureau
Population: 350
Water Systems: 2
Bureau Junction
Population: 368
Water Systems: 1
Burlington
Population: 535
Water Systems: 1
Burnham
Population: 3,989
Water Systems: 1
Burnt Prairie
Population: 486
Water Systems: 1
Burr Ridge
Population: 11,192
Water Systems: 1
Bush
Population: 285
Water Systems: 1
Bushnell
Population: 3,300
Water Systems: 1
Butler
Population: 253
Water Systems: 1
Byron
Population: 4,743
Water Systems: 1
Cabery
Population: 266
Water Systems: 1
Cahokia
Population: 15,250
Water Systems: 1
Cairo
Population: 1,810
Water Systems: 1
Calhoun
Population: 4,854
Water Systems: 2
Calumet
Population: 37,000
Water Systems: 1
Calumet Park
Population: 8,442
Water Systems: 1
Camargo
Population: 750
Water Systems: 1
Cambria
Population: 1,760
Water Systems: 1
Cambridge
Population: 2,108
Water Systems: 1
Camp Point
Population: 1,190
Water Systems: 1
Campbell Hill
Population: 387
Water Systems: 1
Campus
Population: 175
Water Systems: 1
Canton
Population: 16,748
Water Systems: 1
Capron
Population: 1,395
Water Systems: 1
Carbon Cliff
Population: 2,134
Water Systems: 1
Carbon Hill
Population: 370
Water Systems: 1
Carbondale
Population: 22,511
Water Systems: 3
Carlinville
Population: 6,598
Water Systems: 1
Carlock
Population: 550
Water Systems: 1
Carlyle
Population: 6,124
Water Systems: 3
Carmi
Population: 7,107
Water Systems: 2
Carol Stream
Population: 39,447
Water Systems: 1
Carpentersville
Population: 37,983
Water Systems: 1
Carrier Mills
Population: 2,085
Water Systems: 1
Carroll
Population: 80
Water Systems: 1
Carrollton
Population: 2,680
Water Systems: 1
Carterville
Population: 7,533
Water Systems: 3
Cary
Population: 18,271
Water Systems: 1
Casey
Population: 3,574
Water Systems: 1
Caseyville
Population: 17,000
Water Systems: 1
Cass
Population: 1,078
Water Systems: 2
Catlin
Population: 2,380
Water Systems: 1
Cave In Rock
Population: 228
Water Systems: 1
Cedarville
Population: 750
Water Systems: 1
Centralia
Population: 12,182
Water Systems: 1
Cerro Gordo
Population: 1,433
Water Systems: 1
Chadwick
Population: 523
Water Systems: 1
Champaign
Population: 149,805
Water Systems: 12
Chandlerville
Population: 838
Water Systems: 1
Channahon
Population: 14,010
Water Systems: 2
Chapin
Population: 658
Water Systems: 1
Charleston
Population: 22,786
Water Systems: 2
Chatham
Population: 16,544
Water Systems: 1
Chatsworth
Population: 1,256
Water Systems: 1
Chebanse
Population: 1,044
Water Systems: 1
Chenoa
Population: 1,785
Water Systems: 1
Cherry
Population: 490
Water Systems: 1
Cherry Valley
Population: 4,731
Water Systems: 1
Chester
Population: 8,407
Water Systems: 1
Chicago Heights
Population: 26,184
Water Systems: 1
Chicago Ridge
Population: 14,130
Water Systems: 1
Chillicothe
Population: 5,996
Water Systems: 1
Chrisman
Population: 1,200
Water Systems: 1
Christian
Population: 2,215
Water Systems: 3
Christopher
Population: 3,072
Water Systems: 1
Cicero
Population: 83,000
Water Systems: 1
Cisco
Population: 242
Water Systems: 1
Cisne
Population: 634
Water Systems: 1
Cissna Park
Population: 846
Water Systems: 1
Claremont
Population: 176
Water Systems: 1
Clarendon Hills
Population: 8,653
Water Systems: 1
Clark
Population: 6,302
Water Systems: 2
Clay
Population: 2,704
Water Systems: 2
Clayton
Population: 792
Water Systems: 2
Clifton
Population: 1,555
Water Systems: 2
Clinton
Population: 13,447
Water Systems: 6
Coal
Population: 5,856
Water Systems: 2
Coal Valley
Population: 4,021
Water Systems: 2
Coalton
Population: 317
Water Systems: 1
Cobden
Population: 1,343
Water Systems: 1
Coffeen
Population: 685
Water Systems: 1
Colchester
Population: 3,796
Water Systems: 2
Coles
Population: 13,625
Water Systems: 4
Coleta
Population: 15,000
Water Systems: 1
Colfax
Population: 989
Water Systems: 1
Collinsville
Population: 29,500
Water Systems: 1
Colona
Population: 2,540
Water Systems: 1
Colp
Population: 523
Water Systems: 1
Columbia
Population: 11,129
Water Systems: 1
Compton
Population: 200
Water Systems: 1
Concord
Population: 242
Water Systems: 1
Congerville
Population: 580
Water Systems: 2
Cook
Population: 2,835,571
Water Systems: 30
Cooksville
Population: 157
Water Systems: 1
Cordova
Population: 1,636
Water Systems: 2
Cornell
Population: 500
Water Systems: 1
Cortland
Population: 4,270
Water Systems: 1
Coulterville
Population: 1,330
Water Systems: 1
Country Club Hills
Population: 16,511
Water Systems: 1
Countryside
Population: 6,420
Water Systems: 1
Crainville
Population: 1,711
Water Systems: 1
Crawford
Population: 13,516
Water Systems: 3
Creal Springs
Population: 683
Water Systems: 1
Crescent
Population: 650
Water Systems: 1
Crest Hill
Population: 21,169
Water Systems: 1
Creston
Population: 627
Water Systems: 1
Crestwood
Population: 10,826
Water Systems: 1
Crete
Population: 9,570
Water Systems: 4
Crossville
Population: 1,091
Water Systems: 1
Crystal Lake
Population: 40,661
Water Systems: 1
Cuba
Population: 1,184
Water Systems: 1
Cullom
Population: 563
Water Systems: 1
Cutler
Population: 463
Water Systems: 1
Dahlgren
Population: 862
Water Systems: 1
Dakota
Population: 500
Water Systems: 1
Dallas
Population: 7,070
Water Systems: 2
Dalton
Population: 500
Water Systems: 1
Dalzell
Population: 711
Water Systems: 1
Damiansville
Population: 650
Water Systems: 1
Danforth
Population: 663
Water Systems: 2
Danvers
Population: 1,183
Water Systems: 1
Danville
Population: 38,000
Water Systems: 1
Darien
Population: 21,751
Water Systems: 1
Davis
Population: 589
Water Systems: 1
Davis Junction
Population: 2,443
Water Systems: 2
Dawson
Population: 2,375
Water Systems: 1
De Kalb
Population: 45,000
Water Systems: 1
De Land
Population: 446
Water Systems: 1
De Pue
Population: 1,838
Water Systems: 1
De Soto
Population: 1,910
Water Systems: 1
De Witt
Population: 275
Water Systems: 2
Decatur
Population: 76,622
Water Systems: 2
Deer Creek
Population: 704
Water Systems: 1
Deerfield
Population: 19,196
Water Systems: 1
Dekalb
Population: 8,145
Water Systems: 6
Delavan
Population: 1,825
Water Systems: 1
Des Plaines
Population: 60,676
Water Systems: 2
Diamond
Population: 3,051
Water Systems: 2
Dieterich
Population: 600
Water Systems: 1
Divernon
Population: 1,172
Water Systems: 1
Dixmoor
Population: 2,973
Water Systems: 1
Dixon
Population: 15,433
Water Systems: 1
Dolton
Population: 21,426
Water Systems: 1
Dongola
Population: 752
Water Systems: 1
Donnellson
Population: 213
Water Systems: 1
Donovan
Population: 279
Water Systems: 1
Dorchester
Population: 562
Water Systems: 1
Douglas
Population: 1,564
Water Systems: 2
Dover
Population: 200
Water Systems: 1
Dowell
Population: 1,130
Water Systems: 1
Downers Grove
Population: 49,057
Water Systems: 1
Downs
Population: 1,005
Water Systems: 1
Du Quoin
Population: 7,169
Water Systems: 1
Dubois
Population: 200
Water Systems: 1
Dunlap
Population: 1,603
Water Systems: 1
Dupage
Population: 33,316
Water Systems: 16
Dupo
Population: 4,934
Water Systems: 2
Durand
Population: 1,427
Water Systems: 1
Dwight
Population: 4,400
Water Systems: 1
Eagerville
Population: 127
Water Systems: 1
Earlville
Population: 1,613
Water Systems: 1
East Alton
Population: 5,786
Water Systems: 1
East Chicago Heights
Population: 1,813
Water Systems: 1
East Dubuque
Population: 1,700
Water Systems: 1
East Dundee
Population: 3,000
Water Systems: 1
East Galesburg
Population: 860
Water Systems: 1
East Hazel Crest
Population: 1,500
Water Systems: 1
East Moline
Population: 21,478
Water Systems: 2
East Peoria
Population: 30,649
Water Systems: 3
East Saint Louis
Population: 131,818
Water Systems: 2
Easton
Population: 334
Water Systems: 1
Edgewood
Population: 440
Water Systems: 1
Edinburg
Population: 1,068
Water Systems: 1
Edwardsville
Population: 27,179
Water Systems: 3
Effingham
Population: 17,000
Water Systems: 5
El Paso
Population: 2,812
Water Systems: 1
Elburn
Population: 6,559
Water Systems: 1
Eldorado
Population: 8,945
Water Systems: 2
Eldred
Population: 211
Water Systems: 1
Elgin
Population: 114,831
Water Systems: 2
Elizabeth
Population: 802
Water Systems: 1
Elizabethtown
Population: 220
Water Systems: 1
Elk Grove
Population: 34,700
Water Systems: 1
Elkville
Population: 1,128
Water Systems: 1
Elliott
Population: 295
Water Systems: 1
Ellis Grove
Population: 403
Water Systems: 1
Ellsworth
Population: 200
Water Systems: 1
Elmhurst
Population: 46,387
Water Systems: 1
Elmwood
Population: 2,058
Water Systems: 1
Elmwood Park
Population: 25,000
Water Systems: 1
Elvaston
Population: 165
Water Systems: 1
Elwood
Population: 2,279
Water Systems: 1
Emden
Population: 467
Water Systems: 1
Emington
Population: 120
Water Systems: 1
Energy
Population: 984
Water Systems: 1
Enfield
Population: 1,064
Water Systems: 1
Equality
Population: 700
Water Systems: 1
Erie
Population: 1,600
Water Systems: 1
Essex
Population: 500
Water Systems: 1
Eureka
Population: 10,595
Water Systems: 3
Evanston
Population: 75,570
Water Systems: 1
Evansville
Population: 700
Water Systems: 1
Evergreen Park
Population: 19,943
Water Systems: 1
Fairbury
Population: 4,372
Water Systems: 1
Fairfield
Population: 9,763
Water Systems: 4
Fairmount
Population: 690
Water Systems: 1
Fairview
Population: 522
Water Systems: 1
Farina
Population: 550
Water Systems: 1
Farmer
Population: 2,055
Water Systems: 1
Farmersville
Population: 816
Water Systems: 1
Farmington
Population: 2,448
Water Systems: 1
Fayette
Population: 7,108
Water Systems: 2
Fayetteville
Population: 441
Water Systems: 1
Fieldon
Population: 186
Water Systems: 1
Fillmore
Population: 330
Water Systems: 1
Findlay
Population: 800
Water Systems: 1
Fisher
Population: 1,647
Water Systems: 1
Fithian
Population: 485
Water Systems: 1
Flanagan
Population: 1,110
Water Systems: 1
Flat Rock
Population: 331
Water Systems: 1
Flora
Population: 5,478
Water Systems: 1
Flossmoor
Population: 9,704
Water Systems: 1
Ford
Population: 100
Water Systems: 1
Forest City
Population: 222
Water Systems: 1
Forest Park
Population: 45,163
Water Systems: 3
Forest View
Population: 800
Water Systems: 1
Forrest
Population: 1,225
Water Systems: 1
Forreston
Population: 1,469
Water Systems: 1
Forsyth
Population: 3,490
Water Systems: 1
Fox Lake
Population: 11,780
Water Systems: 1
Fox River Grove
Population: 4,702
Water Systems: 1
Frankfort
Population: 21,180
Water Systems: 2
Franklin
Population: 12,679
Water Systems: 8
Franklin Grove
Population: 896
Water Systems: 1
Franklin Park
Population: 18,333
Water Systems: 1
Freeburg
Population: 4,529
Water Systems: 1
Freemanspur
Population: 340
Water Systems: 1
Freeport
Population: 23,930
Water Systems: 1
Fulton
Population: 6,241
Water Systems: 4
Galatia
Population: 989
Water Systems: 1
Galena
Population: 3,308
Water Systems: 1
Galesburg
Population: 31,620
Water Systems: 1
Gallatin
Population: 1,196
Water Systems: 1
Galva
Population: 2,449
Water Systems: 1
Gardner
Population: 1,361
Water Systems: 1
Garrett
Population: 198
Water Systems: 1
Geneseo
Population: 6,539
Water Systems: 1
Geneva
Population: 21,247
Water Systems: 1
Genoa
Population: 5,200
Water Systems: 1
Georgetown
Population: 3,678
Water Systems: 1
German Valley
Population: 463
Water Systems: 1
Germantown
Population: 1,531
Water Systems: 1
Gibson
Population: 3,407
Water Systems: 1
Gifford
Population: 911
Water Systems: 1
Gilberts
Population: 8,366
Water Systems: 1
Gilman
Population: 1,793
Water Systems: 1
Girard
Population: 1,885
Water Systems: 1
Gladstone
Population: 387
Water Systems: 1
Glasford
Population: 1,193
Water Systems: 1
Glen Carbon
Population: 13,175
Water Systems: 3
Glen Ellyn
Population: 28,850
Water Systems: 1
Glendale Heights
Population: 34,208
Water Systems: 1
Glenview
Population: 47,856
Water Systems: 1
Glenwood
Population: 8,956
Water Systems: 1
Golconda
Population: 672
Water Systems: 1
Golden
Population: 620
Water Systems: 1
Golf
Population: 514
Water Systems: 1
Good Hope
Population: 415
Water Systems: 1
Goodfield
Population: 986
Water Systems: 1
Goreville
Population: 1,068
Water Systems: 1
Gorham
Population: 1,090
Water Systems: 1
Grand Ridge
Population: 515
Water Systems: 1
Grand Tower
Population: 673
Water Systems: 1
Grandview
Population: 1,441
Water Systems: 1
Granite City
Population: 27,549
Water Systems: 1
Grantfork
Population: 1,766
Water Systems: 1
Granville
Population: 1,427
Water Systems: 1
Grays Lake
Population: 21,248
Water Systems: 1
Grayville
Population: 1,723
Water Systems: 1
Green Oaks
Population: 1,470
Water Systems: 1
Green Rock
Population: 2,820
Water Systems: 1
Green Valley
Population: 709
Water Systems: 1
Greene
Population: 3,855
Water Systems: 1
Greenfield
Population: 1,480
Water Systems: 1
Greenup
Population: 1,513
Water Systems: 1
Greenview
Population: 778
Water Systems: 1
Greenville
Population: 8,310
Water Systems: 1
Gridley
Population: 1,411
Water Systems: 1
Grundy
Population: 2,067
Water Systems: 8
Gurnee
Population: 30,706
Water Systems: 1
Hainesville
Population: 3,528
Water Systems: 1
Hamel
Population: 1,087
Water Systems: 1
Hamilton
Population: 6,713
Water Systems: 2
Hammond
Population: 478
Water Systems: 1
Hampshire
Population: 18,123
Water Systems: 2
Hampton
Population: 1,863
Water Systems: 1
Hanaford
Population: 845
Water Systems: 1
Hancock
Population: 2,605
Water Systems: 1
Hanna
Population: 1,253
Water Systems: 1
Hanover
Population: 833
Water Systems: 1
Hanover Park
Population: 37,973
Water Systems: 1
Hardin
Population: 3,162
Water Systems: 3
Harmon
Population: 111
Water Systems: 1
Harrisburg
Population: 8,460
Water Systems: 1
Harristown
Population: 1,320
Water Systems: 1
Hartford
Population: 1,450
Water Systems: 1
Hartsburg
Population: 314
Water Systems: 1
Harvard
Population: 9,469
Water Systems: 1
Harvey
Population: 25,000
Water Systems: 1
Harwood Heights
Population: 9,065
Water Systems: 1
Havana
Population: 2,963
Water Systems: 1
Hawthorn Woods
Population: 675
Water Systems: 1
Hazel Crest
Population: 13,098
Water Systems: 1
Hebron
Population: 1,368
Water Systems: 1
Hecker
Population: 429
Water Systems: 1
Henderson
Population: 375
Water Systems: 1
Henry
Population: 6,131
Water Systems: 25
Herrick
Population: 358
Water Systems: 1
Herrin
Population: 12,872
Water Systems: 1
Herscher
Population: 1,600
Water Systems: 1
Hettick
Population: 188
Water Systems: 1
Heyworth
Population: 2,800
Water Systems: 1
Hickory Hills
Population: 14,049
Water Systems: 1
Highland
Population: 14,674
Water Systems: 2
Highland Park
Population: 30,176
Water Systems: 1
Highwood
Population: 5,335
Water Systems: 1
Hillcrest
Population: 1,400
Water Systems: 1
Hillsboro
Population: 8,457
Water Systems: 3
Hillside
Population: 8,200
Water Systems: 1
Hillview
Population: 130
Water Systems: 1
Hinckley
Population: 2,006
Water Systems: 1
Hindsboro
Population: 296
Water Systems: 1
Hinsdale
Population: 17,940
Water Systems: 1
Hodgkins
Population: 1,472
Water Systems: 1
Hoffman
Population: 500
Water Systems: 1
Hoffman Estates
Population: 52,271
Water Systems: 1
Holiday Hills
Population: 740
Water Systems: 1
Hollowayville
Population: 100
Water Systems: 1
Homer
Population: 1,200
Water Systems: 1
Hometown
Population: 4,240
Water Systems: 1
Homewood
Population: 19,463
Water Systems: 1
Hoopeston
Population: 5,802
Water Systems: 1
Hopedale
Population: 830
Water Systems: 1
Hoyleton
Population: 1,707
Water Systems: 2
Hudson
Population: 1,847
Water Systems: 1
Hull
Population: 450
Water Systems: 1
Humboldt
Population: 437
Water Systems: 1
Hume
Population: 382
Water Systems: 1
Huntley
Population: 27,000
Water Systems: 1
Hurst
Population: 782
Water Systems: 1
Hutsonville
Population: 613
Water Systems: 1
Illiopolis
Population: 1,071
Water Systems: 2
Indian Head Park
Population: 3,238
Water Systems: 1
Indianola
Population: 224
Water Systems: 1
Industry
Population: 540
Water Systems: 1
Iola
Population: 158
Water Systems: 1
Ipava
Population: 470
Water Systems: 1
Iroquois
Population: 1,551
Water Systems: 6
Irving
Population: 495
Water Systems: 1
Irvington
Population: 1,081
Water Systems: 1
Island Lake
Population: 8,200
Water Systems: 1
Itasca
Population: 9,867
Water Systems: 1
Iuka
Population: 486
Water Systems: 1
Ivesdale
Population: 360
Water Systems: 1
Jackson
Population: 13,668
Water Systems: 7
Jacksonville
Population: 19,446
Water Systems: 1
Jasper
Population: 29,963
Water Systems: 2
Jefferson
Population: 7,880
Water Systems: 4
Jeffersonville
Population: 355
Water Systems: 1
Jeiseyville
Population: 107
Water Systems: 1
Jerome
Population: 1,548
Water Systems: 1
Jersey
Population: 13,028
Water Systems: 2
Jerseyville
Population: 8,737
Water Systems: 1
Jewett
Population: 256
Water Systems: 1
Jo Daviess
Population: 2,785
Water Systems: 6
Johnson
Population: 3,518
Water Systems: 2
Johnston
Population: 3,509
Water Systems: 1
Joliet
Population: 159,996
Water Systems: 11
Jonesboro
Population: 1,905
Water Systems: 1
Joppa
Population: 6,740
Water Systems: 2
Joy
Population: 372
Water Systems: 1
Junction City
Population: 494
Water Systems: 1
Justice
Population: 20,411
Water Systems: 2
Kampsville
Population: 335
Water Systems: 1
Kane
Population: 18,566
Water Systems: 18
Kankakee
Population: 83,614
Water Systems: 12
Kansas
Population: 900
Water Systems: 1
Karnak
Population: 432
Water Systems: 1
Keensburg
Population: 267
Water Systems: 1
Keithsburg
Population: 747
Water Systems: 1
Kempton
Population: 235
Water Systems: 1
Kendall
Population: 1,542
Water Systems: 5
Kenilworth
Population: 2,514
Water Systems: 1
Kenney
Population: 374
Water Systems: 1
Kewanee
Population: 12,840
Water Systems: 2
Keyesport
Population: 625
Water Systems: 1
Kinderhook
Population: 322
Water Systems: 1
Kingston
Population: 1,160
Water Systems: 1
Kingston Mines
Population: 259
Water Systems: 1
Kinmundy
Population: 940
Water Systems: 1
Kinsman
Population: 99
Water Systems: 1
Kirkland
Population: 2,000
Water Systems: 1
Kirkwood
Population: 714
Water Systems: 1
Knox
Population: 2,157
Water Systems: 3
Knoxville
Population: 3,120
Water Systems: 1
La Fayette
Population: 250
Water Systems: 1
La Grange
Population: 16,640
Water Systems: 2
La Grange Park
Population: 13,579
Water Systems: 1
La Harpe
Population: 1,235
Water Systems: 1
La Moille
Population: 750
Water Systems: 1
La Prairie
Population: 47
Water Systems: 1
La Rose
Population: 98
Water Systems: 1
La Salle
Population: 9,700
Water Systems: 1
Lacon
Population: 1,878
Water Systems: 1
Ladd
Population: 1,295
Water Systems: 1
Lake
Population: 47,776
Water Systems: 47
Lake Barrington
Population: 2,800
Water Systems: 2
Lake Bluff
Population: 5,765
Water Systems: 3
Lake Forest
Population: 19,367
Water Systems: 1
Lake In the Hills
Population: 29,228
Water Systems: 1
Lake Villa
Population: 8,829
Water Systems: 1
Lake Zurich
Population: 19,759
Water Systems: 1
Lakemoor
Population: 2,720
Water Systems: 1
Lakewood
Population: 3,780
Water Systems: 1
Lanark
Population: 1,504
Water Systems: 1
Lansing
Population: 27,657
Water Systems: 1
Lasalle
Population: 11,321
Water Systems: 17
Latham
Population: 380
Water Systems: 1
Lawrence
Population: 4,158
Water Systems: 4
Lawrenceville
Population: 4,524
Water Systems: 1
Le Roy
Population: 3,498
Water Systems: 1
Leaf River
Population: 450
Water Systems: 1
Lebanon
Population: 4,418
Water Systems: 1
Lee
Population: 7,873
Water Systems: 6
Leland
Population: 977
Water Systems: 1
Lemont
Population: 18,085
Water Systems: 2
Lena
Population: 3,552
Water Systems: 2
Lenzburg
Population: 680
Water Systems: 1
Leonore
Population: 111
Water Systems: 1
Lewistown
Population: 2,400
Water Systems: 1
Lexington
Population: 1,930
Water Systems: 1
Liberty
Population: 601
Water Systems: 1
Libertyville
Population: 20,560
Water Systems: 2
Lima
Population: 163
Water Systems: 1
Lincoln
Population: 15,200
Water Systems: 1
Lincolnshire
Population: 7,940
Water Systems: 1
Lincolnwood
Population: 13,463
Water Systems: 1
Lindenhurst
Population: 14,500
Water Systems: 1
Lisle
Population: 24,233
Water Systems: 1
Little York
Population: 742
Water Systems: 2
Livingston
Population: 999
Water Systems: 2
Loami
Population: 812
Water Systems: 1
Lockport
Population: 23,457
Water Systems: 4
Loda
Population: 398
Water Systems: 1
Logan
Population: 3,513
Water Systems: 5
Lombard
Population: 45,155
Water Systems: 2
London Mills
Population: 500
Water Systems: 1
Long Creek
Population: 7,850
Water Systems: 1
Long Grove
Population: 1,199
Water Systems: 7
Long View
Population: 153
Water Systems: 1
Loraine
Population: 300
Water Systems: 1
Lostant
Population: 463
Water Systems: 1
Louisville
Population: 1,201
Water Systems: 1
Loves Park
Population: 28,393
Water Systems: 3
Lovington
Population: 1,300
Water Systems: 1
Ludlow
Population: 308
Water Systems: 1
Lyndon
Population: 648
Water Systems: 1
Lynnville
Population: 130
Water Systems: 1
Lynwood
Population: 10,143
Water Systems: 2
Lyons
Population: 10,775
Water Systems: 1
Macedonia
Population: 181
Water Systems: 1
Machesney Park
Population: 35,663
Water Systems: 2
Macomb
Population: 15,352
Water Systems: 2
Macon
Population: 1,575
Water Systems: 2
Macoupin
Population: 13,279
Water Systems: 10
Madison
Population: 29,134
Water Systems: 10
Maeystown
Population: 340
Water Systems: 1
Magnolia
Population: 249
Water Systems: 1
Mahomet
Population: 6,580
Water Systems: 1
Malden
Population: 326
Water Systems: 1
Malta
Population: 1,143
Water Systems: 1
Manchester
Population: 297
Water Systems: 1
Manhattan
Population: 13,678
Water Systems: 2
Manito
Population: 1,552
Water Systems: 1
Manlius
Population: 298
Water Systems: 1
Mansfield
Population: 939
Water Systems: 1
Maple Park
Population: 1,300
Water Systems: 1
Mapleton
Population: 261
Water Systems: 1
Maquon
Population: 284
Water Systems: 1
Marengo
Population: 7,572
Water Systems: 1
Marietta
Population: 440
Water Systems: 1
Marine
Population: 912
Water Systems: 1
Marion
Population: 45,099
Water Systems: 8
Marissa
Population: 1,921
Water Systems: 1
Mark
Population: 555
Water Systems: 1
Markham
Population: 12,500
Water Systems: 1
Maroa
Population: 1,700
Water Systems: 1
Marquette Heights
Population: 2,974
Water Systems: 1
Marseilles
Population: 5,411
Water Systems: 3
Marshall
Population: 5,485
Water Systems: 5
Martinsville
Population: 1,200
Water Systems: 1
Martinton
Population: 375
Water Systems: 1
Maryville
Population: 10,150
Water Systems: 1
Mascoutah
Population: 8,754
Water Systems: 1
Mason City
Population: 2,558
Water Systems: 1
Mathersville
Population: 651
Water Systems: 1
Matteson
Population: 23,322
Water Systems: 2
Mattoon
Population: 19,500
Water Systems: 1
Maywood
Population: 24,090
Water Systems: 1
Mazon
Population: 994
Water Systems: 1
Mccook
Population: 275
Water Systems: 1
Mcdonough
Population: 8,044
Water Systems: 2
Mchenry
Population: 46,845
Water Systems: 18
Mclean
Population: 4,056
Water Systems: 10
Mcleansboro
Population: 3,014
Water Systems: 1
Mcnabb
Population: 310
Water Systems: 1
Media
Population: 132
Water Systems: 1
Medora
Population: 484
Water Systems: 1
Melrose Park
Population: 24,206
Water Systems: 1
Melvin
Population: 465
Water Systems: 1
Menard
Population: 150
Water Systems: 1
Mendota
Population: 7,036
Water Systems: 2
Mercer
Population: 1,112
Water Systems: 4
Meredosia
Population: 1,041
Water Systems: 1
Merrionette Park
Population: 2,357
Water Systems: 2
Metamora
Population: 4,497
Water Systems: 4
Metcalf
Population: 200
Water Systems: 1
Metropolis
Population: 6,309
Water Systems: 1
Middletown
Population: 434
Water Systems: 1
Midlothian
Population: 14,819
Water Systems: 1
Milan
Population: 5,589
Water Systems: 3
Milford
Population: 1,306
Water Systems: 1
Mill Shoals
Population: 224
Water Systems: 1
Milledgeville
Population: 989
Water Systems: 1
Millstadt
Population: 4,474
Water Systems: 1
Mineral
Population: 206
Water Systems: 1
Minier
Population: 1,180
Water Systems: 1
Minonk
Population: 1,948
Water Systems: 1
Minooka
Population: 12,800
Water Systems: 1
Modesto
Population: 182
Water Systems: 1
Mokena
Population: 19,887
Water Systems: 1
Moline
Population: 44,500
Water Systems: 1
Momence
Population: 3,180
Water Systems: 1
Monee
Population: 5,148
Water Systems: 1
Monmouth
Population: 8,902
Water Systems: 1
Montgomery
Population: 41,018
Water Systems: 6
Monticello
Population: 5,548
Water Systems: 1
Montrose
Population: 201
Water Systems: 1
Morgan
Population: 8,016
Water Systems: 6
Morris
Population: 15,335
Water Systems: 1
Morrison
Population: 4,263
Water Systems: 2
Morrisonville
Population: 1,068
Water Systems: 1
Morton
Population: 17,231
Water Systems: 2
Morton Grove
Population: 25,297
Water Systems: 1
Moultrie
Population: 2,600
Water Systems: 1
Mound Station
Population: 122
Water Systems: 1
Mounds
Population: 1,723
Water Systems: 2
Mount Auburn
Population: 480
Water Systems: 1
Mount Carmel
Population: 7,284
Water Systems: 1
Mount Carroll
Population: 1,450
Water Systems: 1
Mount Clare
Population: 311
Water Systems: 1
Mount Erie
Population: 116
Water Systems: 1
Mount Morris
Population: 3,100
Water Systems: 1
Mount Prospect
Population: 41,492
Water Systems: 1
Mount Sterling
Population: 5,224
Water Systems: 2
Mount Vernon
Population: 16,155
Water Systems: 2
Mount Zion
Population: 5,833
Water Systems: 1
Moweaqua
Population: 1,900
Water Systems: 1
Muddy
Population: 171
Water Systems: 1
Mulberry Grove
Population: 650
Water Systems: 1
Mundelein
Population: 31,530
Water Systems: 2
Murphysboro
Population: 10,990
Water Systems: 2
Naperville
Population: 155,156
Water Systems: 1
Naplate
Population: 450
Water Systems: 1
Nashville
Population: 14,604
Water Systems: 2
Nauvoo
Population: 1,200
Water Systems: 1
Nebo
Population: 340
Water Systems: 1
Neoga
Population: 1,636
Water Systems: 1
Neponset
Population: 427
Water Systems: 1
New Athens
Population: 1,902
Water Systems: 2
New Baden
Population: 4,178
Water Systems: 1
New Berlin
Population: 886
Water Systems: 1
New Boston
Population: 650
Water Systems: 1
New Canton
Population: 359
Water Systems: 1
New Holland
Population: 350
Water Systems: 1
New Lenox
Population: 28,642
Water Systems: 2
New Millford
Population: 537
Water Systems: 1
New Minden
Population: 298
Water Systems: 2
Newark
Population: 992
Water Systems: 1
Newman
Population: 836
Water Systems: 1
Newton
Population: 2,977
Water Systems: 1
Niantic
Population: 648
Water Systems: 1
Niles
Population: 29,350
Water Systems: 2
Nilwood
Population: 1,394
Water Systems: 1
Noble
Population: 840
Water Systems: 1
Normal
Population: 52,936
Water Systems: 3
Norridge
Population: 14,426
Water Systems: 2
Norris
Population: 2,502
Water Systems: 2
North
Population: 772
Water Systems: 1
North Aurora
Population: 18,350
Water Systems: 1
North Chicago
Population: 39,813
Water Systems: 2
North Henderson
Population: 187
Water Systems: 1
North Lake
Population: 12,840
Water Systems: 1
North Pekin
Population: 1,573
Water Systems: 1
North Riverside
Population: 6,672
Water Systems: 1
North Utica
Population: 1,400
Water Systems: 1
Northbrook
Population: 36,015
Water Systems: 3
Northfield
Population: 5,470
Water Systems: 1
O Fallon
Population: 47,185
Water Systems: 2
Oak Brook
Population: 14,761
Water Systems: 2
Oak Brook Terr
Population: 2,693
Water Systems: 2
Oak Forest
Population: 26,547
Water Systems: 1
Oak Lawn
Population: 58,362
Water Systems: 1
Oak Park
Population: 54,583
Water Systems: 1
Oakford
Population: 309
Water Systems: 1
Oakland
Population: 739
Water Systems: 1
Oakwood
Population: 1,595
Water Systems: 1
Oblong
Population: 2,490
Water Systems: 1
Odell
Population: 1,014
Water Systems: 1
Odin
Population: 2,455
Water Systems: 1
Ogden
Population: 750
Water Systems: 1
Ogle
Population: 3,680
Water Systems: 12
Oglesby
Population: 4,588
Water Systems: 2
Ohio
Population: 465
Water Systems: 1
Okawville
Population: 1,521
Water Systems: 1
Old Shawneetown
Population: 195
Water Systems: 1
Olmsted
Population: 472
Water Systems: 1
Olney
Population: 8,929
Water Systems: 2
Olympia Fields
Population: 4,922
Water Systems: 1
Omaha
Population: 703
Water Systems: 2
Onarga
Population: 1,409
Water Systems: 1
Oneida
Population: 696
Water Systems: 1
Oquawka
Population: 1,125
Water Systems: 1
Oreana
Population: 892
Water Systems: 1
Oregon
Population: 3,545
Water Systems: 1
Orient
Population: 362
Water Systems: 1
Orion
Population: 1,754
Water Systems: 1
Orland Park
Population: 58,862
Water Systems: 1
Oswego
Population: 38,169
Water Systems: 1
Ottawa
Population: 19,000
Water Systems: 1
Palatine
Population: 70,875
Water Systems: 1
Palmyra
Population: 850
Water Systems: 1
Palos Heights
Population: 15,500
Water Systems: 1
Palos Hills
Population: 18,530
Water Systems: 1
Palos Park
Population: 4,899
Water Systems: 1
Pana
Population: 5,847
Water Systems: 1
Panama
Population: 343
Water Systems: 1
Paris
Population: 9,077
Water Systems: 1
Park City
Population: 7,885
Water Systems: 2
Park Ridge
Population: 39,800
Water Systems: 1
Parkersburg
Population: 359
Water Systems: 1
Patoka
Population: 603
Water Systems: 1
Paw Paw
Population: 870
Water Systems: 1
Pawnee
Population: 2,739
Water Systems: 1
Paxton
Population: 4,555
Water Systems: 2
Payson
Population: 1,398
Water Systems: 1
Pearl
Population: 956
Water Systems: 2
Pecatonica
Population: 2,195
Water Systems: 1
Pekin
Population: 33,606
Water Systems: 3
Pembroke
Population: 579
Water Systems: 1
Peoria
Population: 147,945
Water Systems: 11
Peoria Heights
Population: 5,908
Water Systems: 1
Peotone
Population: 5,710
Water Systems: 2
Percy
Population: 925
Water Systems: 1
Peru
Population: 10,300
Water Systems: 1
Petersburg
Population: 5,603
Water Systems: 3
Philo
Population: 1,300
Water Systems: 1
Phoenix
Population: 1,994
Water Systems: 1
Piatt
Population: 660
Water Systems: 1
Pierron
Population: 1,882
Water Systems: 2
Pike
Population: 7,254
Water Systems: 4
Pinckneyville
Population: 8,820
Water Systems: 2
Piper
Population: 875
Water Systems: 1
Pittsburg
Population: 2,896
Water Systems: 1
Pittsfield
Population: 4,576
Water Systems: 1
Pk Forest South
Population: 7,052
Water Systems: 1
Plainfield
Population: 44,762
Water Systems: 1
Plainville
Population: 264
Water Systems: 1
Plano
Population: 12,191
Water Systems: 1
Pleasant Hill
Population: 1,100
Water Systems: 1
Plymouth
Population: 460
Water Systems: 1
Pocahontas
Population: 697
Water Systems: 1
Polo
Population: 2,355
Water Systems: 1
Pontiac
Population: 13,829
Water Systems: 3
Pontoon Beach
Population: 3,545
Water Systems: 2
Pope
Population: 5,565
Water Systems: 1
Poplar Grove
Population: 5,039
Water Systems: 3
Port Byron
Population: 1,678
Water Systems: 1
Posen
Population: 5,987
Water Systems: 1
Potomac
Population: 685
Water Systems: 1
Prairie
Population: 425
Water Systems: 1
Prairie Du Rochr
Population: 759
Water Systems: 1
Princeton
Population: 7,660
Water Systems: 1
Princeville
Population: 1,901
Water Systems: 1
Prophetstown
Population: 2,100
Water Systems: 1
Prospect Heights
Population: 2,375
Water Systems: 2
Pulaski
Population: 259
Water Systems: 1
Putnam
Population: 1,200
Water Systems: 3
Quincy
Population: 45,000
Water Systems: 1
Radom
Population: 193
Water Systems: 1
Raleigh
Population: 578
Water Systems: 1
Ramsey
Population: 966
Water Systems: 1
Randolph
Population: 5,330
Water Systems: 2
Rankin
Population: 650
Water Systems: 1
Rantoul
Population: 13,770
Water Systems: 3
Raritan
Population: 180
Water Systems: 1
Raymond
Population: 974
Water Systems: 1
Red Bud
Population: 3,804
Water Systems: 1
Reynolds
Population: 508
Water Systems: 1
Richland
Population: 484
Water Systems: 1
Richmond
Population: 2,087
Water Systems: 1
Richton Park
Population: 12,500
Water Systems: 1
Richview
Population: 375
Water Systems: 1
Ridge Farm
Population: 1,072
Water Systems: 2
Ridgway
Population: 874
Water Systems: 1
Rio
Population: 265
Water Systems: 1
Ripley
Population: 250
Water Systems: 1
River Forest
Population: 11,172
Water Systems: 1
River Grove
Population: 10,093
Water Systems: 1
Riverdale
Population: 10,266
Water Systems: 1
Riverside
Population: 9,298
Water Systems: 1
Riverton
Population: 4,333
Water Systems: 1
Riverwoods
Population: 3,618
Water Systems: 1
Roanoke
Population: 2,000
Water Systems: 1
Robbins
Population: 5,415
Water Systems: 1
Roberts
Population: 367
Water Systems: 1
Robinson
Population: 3,026
Water Systems: 1
Rochelle
Population: 9,574
Water Systems: 1
Rochester
Population: 3,856
Water Systems: 1
Rock City
Population: 313
Water Systems: 1
Rock Falls
Population: 8,740
Water Systems: 2
Rock Island
Population: 53,439
Water Systems: 32
Rockbridge
Population: 175
Water Systems: 1
Rockdale
Population: 2,012
Water Systems: 1
Rockford
Population: 148,103
Water Systems: 6
Rockton
Population: 7,765
Water Systems: 2
Rolling Meadows
Population: 24,099
Water Systems: 1
Romeoville
Population: 50,458
Water Systems: 1
Roodhouse
Population: 1,578
Water Systems: 1
Roscoe
Population: 250
Water Systems: 1
Roselle
Population: 22,897
Water Systems: 1
Rosemont
Population: 4,200
Water Systems: 1
Roseville
Population: 989
Water Systems: 1
Rosiclare
Population: 1,387
Water Systems: 1
Rossville
Population: 1,331
Water Systems: 1
Round Lake
Population: 18,278
Water Systems: 1
Round Lake Beach
Population: 28,845
Water Systems: 1
Round Lake Heights
Population: 2,773
Water Systems: 1
Round Lake Park
Population: 4,900
Water Systems: 1
Roxana
Population: 1,509
Water Systems: 1
Royal
Population: 273
Water Systems: 1
Royal Lakes
Population: 268
Water Systems: 1
Royalton
Population: 1,118
Water Systems: 1
Ruma
Population: 341
Water Systems: 1
Rushville
Population: 3,375
Water Systems: 1
Rutland
Population: 259
Water Systems: 1
Saint Anne
Population: 1,300
Water Systems: 1
Saint Augustine
Population: 119
Water Systems: 1
Saint Charles
Population: 33,103
Water Systems: 1
Saint Clair
Population: 10,487
Water Systems: 4
Saint Elmo
Population: 1,461
Water Systems: 1
Saint Francisville
Population: 583
Water Systems: 1
Saint Jacob
Population: 1,835
Water Systems: 1
Saint Libory
Population: 628
Water Systems: 1
Saint Peter
Population: 387
Water Systems: 1
Salem
Population: 8,406
Water Systems: 1
Saline
Population: 4,128
Water Systems: 3
San Jose
Population: 479
Water Systems: 1
Sandoval
Population: 1,528
Water Systems: 1
Sandwich
Population: 7,635
Water Systems: 3
Sangamon
Population: 4,946
Water Systems: 5
Sauk
Population: 10,142
Water Systems: 2
Saunemin
Population: 456
Water Systems: 1
Savanna
Population: 3,020
Water Systems: 1
Sawyerville
Population: 578
Water Systems: 1
Saybrook
Population: 679
Water Systems: 1
Scales Mound
Population: 376
Water Systems: 1
Schaumburg
Population: 74,550
Water Systems: 1
Schiller Park
Population: 11,515
Water Systems: 1
Schram
Population: 563
Water Systems: 1
Schuyler
Population: 3,963
Water Systems: 3
Sciota
Population: 180
Water Systems: 1
Scott
Population: 1,228
Water Systems: 2
Seaton
Population: 200
Water Systems: 1
Seatonville
Population: 314
Water Systems: 1
Secor
Population: 600
Water Systems: 2
Seneca
Population: 2,371
Water Systems: 1
Sesser
Population: 2,505
Water Systems: 1
Shabbona
Population: 881
Water Systems: 1
Shannon
Population: 757
Water Systems: 1
Shawneetown
Population: 1,054
Water Systems: 1
Sheffield
Population: 821
Water Systems: 1
Shelbyville
Population: 6,174
Water Systems: 1
Sheldon
Population: 950
Water Systems: 1
Sherrard
Population: 692
Water Systems: 1
Shipman
Population: 656
Water Systems: 1
Shorewood
Population: 17,823
Water Systems: 2
Sibley
Population: 272
Water Systems: 1
Sidell
Population: 557
Water Systems: 1
Sigel
Population: 386
Water Systems: 1
Silvis
Population: 7,800
Water Systems: 1
Sims
Population: 259
Water Systems: 1
Skokie
Population: 66,422
Water Systems: 1
Sleepy Hollow
Population: 3,100
Water Systems: 1
Smithboro
Population: 188
Water Systems: 1
Smithfield
Population: 375
Water Systems: 1
Smithton
Population: 4,319
Water Systems: 2
Somonauk
Population: 1,786
Water Systems: 1
Sorento
Population: 429
Water Systems: 1
South Beloit
Population: 8,171
Water Systems: 3
South Chicago Heights
Population: 4,164
Water Systems: 1
South Elgin
Population: 24,243
Water Systems: 2
South Holland
Population: 22,500
Water Systems: 1
South Jacksonville
Population: 3,508
Water Systems: 1
South Pekin
Population: 1,146
Water Systems: 1
South Roxana
Population: 1,891
Water Systems: 1
South Wilmington
Population: 700
Water Systems: 1
Sparland
Population: 399
Water Systems: 1
Sparta
Population: 4,395
Water Systems: 1
Spring Valley
Population: 5,582
Water Systems: 1
Springerton
Population: 176
Water Systems: 1
Springfield
Population: 129,216
Water Systems: 20
Standard
Population: 203
Water Systems: 1
Stanford
Population: 600
Water Systems: 1
Staunton
Population: 5,756
Water Systems: 1
Steeleville
Population: 1,930
Water Systems: 1
Steger
Population: 9,700
Water Systems: 1
Stephenson
Population: 878
Water Systems: 3
Sterling
Population: 232
Water Systems: 1
Steward
Population: 229
Water Systems: 1
Stewardson
Population: 747
Water Systems: 1
Stickney
Population: 7,110
Water Systems: 1
Stillman Valley
Population: 1,200
Water Systems: 1
Stockton
Population: 1,900
Water Systems: 1
Stone Park
Population: 4,576
Water Systems: 1
Stonefort
Population: 306
Water Systems: 1
Stonington
Population: 1,715
Water Systems: 2
Strawn
Population: 133
Water Systems: 1
Streamwood
Population: 39,577
Water Systems: 1
Streator
Population: 19,000
Water Systems: 1
Stronghurst
Population: 950
Water Systems: 1
Sublette
Population: 426
Water Systems: 1
Sugar Grove
Population: 11,243
Water Systems: 1
Sullivan
Population: 4,326
Water Systems: 1
Summerfield
Population: 471
Water Systems: 1
Summit
Population: 10,875
Water Systems: 1
Sumner
Population: 1,083
Water Systems: 1
Sun River Terrace
Population: 498
Water Systems: 1
Sycamore
Population: 18,500
Water Systems: 1
Table Grove
Population: 416
Water Systems: 1
Tallula
Population: 750
Water Systems: 1
Tamaroa
Population: 2,328
Water Systems: 1
Tamms
Population: 667
Water Systems: 1
Tampico
Population: 689
Water Systems: 1
Taylor Springs
Population: 724
Water Systems: 1
Taylorville
Population: 14,106
Water Systems: 2
Tazewell
Population: 11,251
Water Systems: 8
Teutopolis
Population: 1,599
Water Systems: 1
Thawville
Population: 270
Water Systems: 1
Thayer
Population: 721
Water Systems: 1
Thebes
Population: 213
Water Systems: 1
Thomasboro
Population: 1,066
Water Systems: 1
Thompsonville
Population: 486
Water Systems: 1
Thomson
Population: 2,746
Water Systems: 2
Thornton
Population: 2,333
Water Systems: 1
Tilden
Population: 740
Water Systems: 1
Tinley Park
Population: 56,703
Water Systems: 1
Tiskilwa
Population: 740
Water Systems: 1
Toledo
Population: 1,166
Water Systems: 1
Tolono
Population: 3,884
Water Systems: 2
Toluca
Population: 1,425
Water Systems: 1
Tonica
Population: 800
Water Systems: 1
Toulon
Population: 1,193
Water Systems: 1
Tovey
Population: 512
Water Systems: 1
Towanda
Population: 480
Water Systems: 1
Tower Hill
Population: 1,262
Water Systems: 2
Tower Lakes
Population: 1,372
Water Systems: 1
Tremont
Population: 2,414
Water Systems: 2
Trenton
Population: 3,078
Water Systems: 1
Troy
Population: 16,962
Water Systems: 1
Tuscola
Population: 4,925
Water Systems: 2
Ullin
Population: 496
Water Systems: 1
Union
Population: 4,567
Water Systems: 5
Urbana
Population: 15,020
Water Systems: 8
Ursa
Population: 626
Water Systems: 1
Valier
Population: 1,259
Water Systems: 1
Valmeyer
Population: 4,913
Water Systems: 2
Vandalia
Population: 7,617
Water Systems: 2
Varna
Population: 212
Water Systems: 1
Vergennes
Population: 661
Water Systems: 1
Vermilion
Population: 1,587
Water Systems: 4
Vermont
Population: 738
Water Systems: 1
Vernon Hills
Population: 33,432
Water Systems: 2
Versailles
Population: 478
Water Systems: 1
Victoria
Population: 268
Water Systems: 1
Vienna
Population: 3,235
Water Systems: 2
Villa Grove
Population: 2,467
Water Systems: 1
Villa Park
Population: 22,263
Water Systems: 1
Viola
Population: 970
Water Systems: 1
Virden
Population: 3,274
Water Systems: 1
Virginia
Population: 1,611
Water Systems: 1
Volo
Population: 6,629
Water Systems: 1
Wabash
Population: 1,777
Water Systems: 1
Waggoner
Population: 245
Water Systems: 1
Walnut
Population: 1,311
Water Systems: 1
Walnut Hill
Population: 1,180
Water Systems: 1
Waltonville
Population: 1,901
Water Systems: 1
Wamac
Population: 1,052
Water Systems: 1
Wapella
Population: 670
Water Systems: 1
Warren
Population: 1,428
Water Systems: 1
Warrensburg
Population: 1,230
Water Systems: 1
Warrenville
Population: 12,709
Water Systems: 1
Warsaw
Population: 1,607
Water Systems: 1
Washburn
Population: 1,200
Water Systems: 1
Washington
Population: 16,321
Water Systems: 3
Wataga
Population: 965
Water Systems: 1
Waterloo
Population: 10,190
Water Systems: 1
Waterman
Population: 1,506
Water Systems: 1
Watseka
Population: 5,500
Water Systems: 1
Watson
Population: 754
Water Systems: 1
Wauconda
Population: 14,084
Water Systems: 1
Waukegan
Population: 87,157
Water Systems: 1
Waverly
Population: 1,194
Water Systems: 1
Wayne
Population: 4,755
Water Systems: 2
Waynesville
Population: 452
Water Systems: 1
Weldon
Population: 404
Water Systems: 1
Wellington
Population: 222
Water Systems: 1
Wenona
Population: 979
Water Systems: 1
West
Population: 668
Water Systems: 1
West Brooklyn
Population: 150
Water Systems: 1
West Chicago
Population: 25,166
Water Systems: 1
West Dundee
Population: 7,339
Water Systems: 1
West Frankfort
Population: 8,650
Water Systems: 1
West Point
Population: 248
Water Systems: 1
West Salem
Population: 921
Water Systems: 1
Westchester
Population: 16,241
Water Systems: 1
Western Springs
Population: 13,274
Water Systems: 1
Westfield
Population: 678
Water Systems: 1
Westhaven
Population: 5,223
Water Systems: 1
Westmont
Population: 24,161
Water Systems: 1
Weston
Population: 22,423
Water Systems: 1
Westville
Population: 3,917
Water Systems: 1
Wheaton
Population: 54,290
Water Systems: 2
Wheeling
Population: 39,137
Water Systems: 1
White
Population: 433
Water Systems: 1
White Hall
Population: 2,313
Water Systems: 1
Will
Population: 27,865
Water Systems: 8
Williamsfield
Population: 575
Water Systems: 1
Williamson
Population: 11,398
Water Systems: 6
Williamsville
Population: 6,198
Water Systems: 1
Willisville
Population: 799
Water Systems: 1
Willow Hill
Population: 309
Water Systems: 1
Willowbrook
Population: 8,540
Water Systems: 1
Wilmette
Population: 27,087
Water Systems: 1
Wilmington
Population: 5,832
Water Systems: 2
Wilsonville
Population: 536
Water Systems: 1
Winchester
Population: 1,589
Water Systems: 1
Windsor
Population: 1,940
Water Systems: 2
Winfield
Population: 9,835
Water Systems: 1
Winnebago
Population: 5,338
Water Systems: 7
Winnetka
Population: 13,037
Water Systems: 1
Winslow
Population: 350
Water Systems: 1
Winthrop Harbor
Population: 6,700
Water Systems: 1
Wood Dale
Population: 14,012
Water Systems: 1
Wood River
Population: 10,464
Water Systems: 1
Woodford
Population: 300
Water Systems: 2
Woodhull
Population: 750
Water Systems: 1
Woodland
Population: 319
Water Systems: 1
Woodlawn
Population: 3,587
Water Systems: 1
Woodridge
Population: 35,278
Water Systems: 1
Woodstock
Population: 25,630
Water Systems: 1
Worden
Population: 1,096
Water Systems: 1
Worth
Population: 10,970
Water Systems: 1
Wyanet
Population: 886
Water Systems: 1
Wyoming
Population: 1,300
Water Systems: 1
Xenia
Population: 542
Water Systems: 1
Yates
Population: 828
Water Systems: 1
Yorkville
Population: 23,000
Water Systems: 1
Zeigler
Population: 1,774
Water Systems: 1
Zion
Population: 25,037
Water Systems: 2