Illinois Water Quality

Aurora

Pop. 200,661

Chicago

Pop. 2,664,452

Elgin

Pop. 112,111

Joliet

Pop. 147,861

Naperville

Pop. 147,100

North Peoria

Neighborhood · Peoria

Pop. 113,004

Peoria

Pop. 115,070

Rockford

Pop. 148,278

Springfield

Pop. 114,394

Addison

Pop. 37,208

Albany Park

Pop. 52,079

Algonquin

Pop. 30,571

Arlington Heights

Pop. 75,926

Ashburn

Pop. 42,752

Auburn Gresham

Pop. 45,842

Avondale

Pop. 39,721

Bartlett

Pop. 41,545

Belleville

Pop. 42,034

Belmont Cragin

Pop. 79,159

Berwyn

Pop. 56,368

Bloomington

Pop. 78,292

Bolingbrook

Pop. 74,306

Bridgeport

Pop. 33,878

Brighton Park

Pop. 44,202

Buffalo Grove

Pop. 41,496

Calumet City

Pop. 37,031

Carol Stream

Pop. 40,356

Carpentersville

Pop. 38,512

Champaign

Pop. 86,096

Chatham

Pop. 31,392

Chicago Heights

Pop. 30,284

Chicago Lawn

Pop. 55,551

Chicago Loop

Pop. 33,442

Cicero

Pop. 83,886

Crystal Lake

Pop. 40,448

Danville

Pop. 32,108

Decatur

Pop. 73,254

DeKalb

Pop. 43,211

Des Plaines

Pop. 58,677

Downers Grove

Pop. 49,732

Edgewater

Pop. 54,873

Elk Grove Village

Pop. 33,238

Elmhurst

Pop. 45,957

Evanston

Pop. 75,527

Gage Park

Pop. 41,202

Galesburg

Pop. 31,273

Glendale Heights

Pop. 34,208

Glenview

Pop. 47,446

Greater Grand Crossing

Pop. 32,346

Gurnee

Pop. 31,056

Hanover Park

Pop. 38,333

Hoffman Estates

Pop. 52,138

Irving Park

Pop. 56,520

Lincoln Park

Pop. 66,959

Lincoln Square

Pop. 40,761

Logan Square

Pop. 73,702

Lombard

Pop. 43,797

Lower West Side

Neighborhood · Chicago

Pop. 34,410

Moline

Pop. 42,681

Mount Prospect

Pop. 54,747

Mundelein

Pop. 31,582

Near North Side

Neighborhood · Chicago

Pop. 85,711

New City

Pop. 40,997

Normal

Pop. 54,373

North Center

Neighborhood · Chicago

Pop. 34,623

North Lawndale

Neighborhood · Chicago

Pop. 35,276

Northbrook

Pop. 33,663

Oak Lawn

Pop. 56,781

Oak Park

Pop. 52,287

Orland Park

Pop. 58,619

Oswego

Pop. 33,955

Palatine

Pop. 69,308

Park Ridge

Pop. 37,757

Pekin

Pop. 33,223

Plainfield

Pop. 42,527

Portage Park

Pop. 64,841

Quincy

Pop. 40,780

Rock Island

Pop. 38,620

Rogers Park

Pop. 54,402

Romeoville

Pop. 39,719

Schaumburg

Pop. 74,693

Skokie

Pop. 64,821

South Lawndale

Neighborhood · Chicago

Pop. 73,826

South Shore

Neighborhood · Chicago

Pop. 51,451

St. Charles

Pop. 32,974

Streamwood

Pop. 40,554

Tinley Park

Pop. 57,143

Uptown

Pop. 55,137

Urbana

Pop. 42,311

Waukegan

Pop. 88,475

West Englewood

Neighborhood · Chicago

Pop. 32,156

West Lawn

Neighborhood · Chicago

Pop. 32,749

West Ridge

Neighborhood · Chicago

Pop. 72,211

West Town

Neighborhood · Chicago

Pop. 86,429

Wheaton

Pop. 53,715

Wheeling

Pop. 38,079

Woodridge

Pop. 33,370

Alsip

Pop. 19,346

Alton

Pop. 27,003

Antioch

Pop. 14,329

Barrington

Pop. 10,353

Batavia

Pop. 26,495

Beach Park

Pop. 13,976

Bellwood

Pop. 19,308

Belvidere

Pop. 25,132

Bensenville

Pop. 18,440

Bloomingdale

Pop. 22,254

Blue Island

Pop. 23,652

Bourbonnais

Pop. 18,569

Bradley

Pop. 15,617

Bridgeview

Pop. 16,407

Brookfield

Pop. 18,944

Burbank

Pop. 29,128

Burr Ridge

Pop. 10,818

Cahokia

Pop. 14,402

Canton

Pop. 14,211

Carbondale

Pop. 26,399

Cary

Pop. 17,965

Centralia

Pop. 12,655

Channahon

Pop. 12,594

Charleston

Pop. 21,196

Chatham

Pop. 12,351

Chicago Ridge

Pop. 14,373

Collinsville

Pop. 24,754

Columbia

Pop. 10,191

Country Club Hills

Pop. 16,795

Crest Hill

Pop. 21,153

Crestwood

Pop. 10,984

Darien

Pop. 22,256

Deerfield

Pop. 19,019

Dixon

Pop. 15,319

Dolton

Pop. 23,197

Douglas

Pop. 20,323

East Garfield Park

Pop. 20,656

East Moline

Pop. 21,350

East Peoria

Pop. 23,080

East Saint Louis

Pop. 27,006

Edwardsville

Pop. 24,992

Effingham

Pop. 12,604

Elmwood Park

Pop. 24,840

Englewood

Pop. 26,121

Evergreen Park

Pop. 19,841

Fairview Heights

Pop. 16,827

Forest Park

Pop. 14,123

Fox Lake

Pop. 10,518

Frankfort

Pop. 18,653

Franklin Park

Pop. 18,312

Freeport

Pop. 24,476

Gages Lake

Pop. 10,198

Geneva

Pop. 21,806

Glen Carbon

Pop. 12,966

Glen Ellyn

Pop. 28,201

Godfrey

Pop. 17,759

Goodings Grove

Pop. 18,569

Grand Boulevard

Pop. 22,373

Granite City

Pop. 29,054

Grayslake

Pop. 20,915

Harvey

Pop. 25,194

Hazel Crest

Pop. 14,118

Herrin

Pop. 12,910

Hickory Hills

Pop. 14,122

Highland Park

Pop. 29,743

Hinsdale

Pop. 17,628

Homer Glen

Pop. 24,395

Homewood

Pop. 19,373

Huntley

Pop. 26,005

Hyde Park

Pop. 26,893

Jacksonville

Pop. 19,103

Justice

Pop. 12,968

Kankakee

Pop. 26,676

Kenwood

Pop. 17,601

Kewanee

Pop. 12,533

La Grange

Pop. 15,723

La Grange Park

Pop. 13,608

Lake Forest

Pop. 19,408

Lake in the Hills

Pop. 29,024

Lake Zurich

Pop. 19,993

Lansing

Pop. 28,349

Lemont

Pop. 16,788

Libertyville

Pop. 20,436

Lincoln

Pop. 13,966

Lincolnwood

Pop. 12,646

Lindenhurst

Pop. 14,408

Lisle

Pop. 22,964

Lockport

Pop. 25,175

Loves Park

Pop. 23,455

Lyons

Pop. 10,722

Machesney Park

Pop. 22,927

Macomb

Pop. 18,547

Marion

Pop. 17,803

Markham

Pop. 12,682

Matteson

Pop. 19,195

Mattoon

Pop. 18,113

Maywood

Pop. 24,012

McHenry

Pop. 26,657

McKinley Park

Pop. 15,612

Melrose Park

Pop. 25,379

Midlothian

Pop. 14,847

Minooka

Pop. 11,243

Mokena

Pop. 19,923

Montgomery

Pop. 19,489

Morgan Park

Pop. 22,924

Morris

Pop. 14,363

Morton

Pop. 16,306

Morton Grove

Pop. 23,448

Mount Greenwood

Pop. 18,783

Mount Vernon

Pop. 15,087

Near South Side

Pop. 22,401

New Lenox

Pop. 25,800

Niles

Pop. 29,876

Norridge

Pop. 14,621

North Aurora

Pop. 17,456

North Chicago

Pop. 29,491

Northlake

Pop. 12,312

O'Fallon

Pop. 29,002

Oak Forest

Pop. 28,074

Ottawa

Pop. 18,342

Palos Heights

Pop. 12,545

Palos Hills

Pop. 17,565

Park Forest

Pop. 21,954

Plano

Pop. 11,282

Pontiac

Pop. 11,794

Prospect Heights

Pop. 16,386

Rantoul

Pop. 13,008

Richton Park

Pop. 13,695

River Forest

Pop. 11,199

River Grove

Pop. 10,219

Riverdale

Pop. 13,536

Rolling Meadows

Pop. 24,190

Roscoe

Pop. 10,565

Roselle

Pop. 22,994

Round Lake

Pop. 18,461

Round Lake Beach

Pop. 27,852

Sauk Village

Pop. 10,493

Schiller Park

Pop. 11,806

Shiloh

Pop. 12,961

Shorewood

Pop. 16,747

South Chicago

Neighborhood · Chicago

Pop. 28,095

South Elgin

Pop. 22,365

South Holland

Pop. 22,043

Sterling

Pop. 15,057

Streator

Pop. 13,182

Summit

Pop. 11,389

Swansea

Pop. 13,543

Sycamore

Pop. 17,712

Taylorville

Pop. 10,873

Troy

Pop. 10,036

Ukrainian Village

Pop. 15,000

Upper Alton

Pop. 29,251

Vernon Hills

Pop. 26,314

Villa Park

Pop. 21,969

Village of Campton Hills

Pop. 13,483

Warrenville

Pop. 13,317

Wasco

Pop. 22,560

Washington

Pop. 16,664

Waterloo

Pop. 10,236

Wauconda

Pop. 13,814

West Chicago

Pop. 27,447

West Elsdon

Pop. 19,219

West Garfield Park

Pop. 17,742

Westchester

Pop. 16,729

Western Springs

Pop. 13,369

Westmont

Pop. 24,941

Wilmette

Pop. 27,413

Winnetka

Pop. 12,472

Wood Dale

Pop. 13,917

Wood River

Pop. 10,294

Woodlawn

Pop. 24,150

Woodstock

Pop. 25,189

Worth

Pop. 10,784

Yorkville

Pop. 18,451

Zion

Pop. 24,117