Ohio Water Quality

605 ZIP codes analyzed across 547 cities. Average water quality score: 48/100 (national average: 50/100).

Dayton

11 ZIPs

C

Cincinnati

8 ZIPs

B

Columbus

7 ZIPs

F

Mansfield

7 ZIPs

D

Canton

5 ZIPs

B

Akron

4 ZIPs

B

Cleveland

4 ZIPs

B

Lima

4 ZIPs

D

Springfield

4 ZIPs

C

Toledo

3 ZIPs

B

Chagrin Falls

2 ZIPs

F

Hamilton

2 ZIPs

C

Lorain

2 ZIPs

D

Medina

2 ZIPs

D

Middletown

2 ZIPs

B

Steubenville

2 ZIPs

C

Warren

2 ZIPs

F

Westerville

2 ZIPs

A

Youngstown

2 ZIPs

A

Zanesville

2 ZIPs

D

Ada

1 ZIP

F

Addyston

1 ZIP

F

Adena

1 ZIP

C

Albany

1 ZIP

B

Alexandria

1 ZIP

A

Alger

1 ZIP

F

Alliance

1 ZIP

D

Amanda

1 ZIP

D

Amesville

1 ZIP

B

Amherst

1 ZIP

F

Andover

1 ZIP

F

Anna

1 ZIP

D

Ansonia

1 ZIP

B

Antwerp

1 ZIP

C

Arcadia

1 ZIP

D

Arcanum

1 ZIP

C

Archbold

1 ZIP

C

Arlington

1 ZIP

C

Ashland

1 ZIP

B

Ashley

1 ZIP

C

Ashtabula

1 ZIP

A

Ashville

1 ZIP

D

Athens

1 ZIP

C

Attica

1 ZIP

F

Aurora

1 ZIP

A

Avon

1 ZIP

A

Avon Lake

1 ZIP

B

Bainbridge

1 ZIP

C

Baltimore

1 ZIP

D

Bannock

1 ZIP

A

Barberton

1 ZIP

F

Barnesville

1 ZIP

C

Batavia

1 ZIP

C

Beach City

1 ZIP

B

Beachwood

1 ZIP

F

Beaver

1 ZIP

F

Beaverdam

1 ZIP

F

Bedford

1 ZIP

A

Bellaire

1 ZIP

F

Bellbrook

1 ZIP

B

Belle Center

1 ZIP

A

Belle Valley

1 ZIP

C

Bellefontaine

1 ZIP

F

Bellevue

1 ZIP

C

Bellville

1 ZIP

C

Belmont

1 ZIP

B

Beloit

1 ZIP

C

Belpre

1 ZIP

D

Berea

1 ZIP

B

Berlin

1 ZIP

D

Bethel

1 ZIP

D

Bethesda

1 ZIP

C

Bettsville

1 ZIP

D

Big Prairie

1 ZIP

C

Blacklick

1 ZIP

D

Bloomingburg

1 ZIP

D

Bloomville

1 ZIP

D

Bluffton

1 ZIP

F

Bolivar

1 ZIP

C

Botkins

1 ZIP

D

Bowerston

1 ZIP

B

Bowersville

1 ZIP

C

Bowling Green

1 ZIP

C

Bradford

1 ZIP

D

Bradner

1 ZIP

A

Bremen

1 ZIP

D

Brewster

1 ZIP

B

Bridgeport

1 ZIP

F

Brilliant

1 ZIP

D

Brookfield

1 ZIP

B

Brookville

1 ZIP

D

Bryan

1 ZIP

B

Buckeye Lake

1 ZIP

A

Bucyrus

1 ZIP

B

Burbank

1 ZIP

A

Burton

1 ZIP

C

Butler

1 ZIP

B

Byesville

1 ZIP

F

Cadiz

1 ZIP

D

Caldwell

1 ZIP

D

Cambridge

1 ZIP

F

Camden

1 ZIP

C

Canal Fulton

1 ZIP

D

Canal Winchester

1 ZIP

A

Canfield

1 ZIP

B

Carbon Hill

1 ZIP

C

Cardington

1 ZIP

A

Carey

1 ZIP

B

Carroll

1 ZIP

D

Carrollton

1 ZIP

B

Cedarville

1 ZIP

B

Celina

1 ZIP

F

Chardon

1 ZIP

D

Chauncey

1 ZIP

F

Chesterhill

1 ZIP

B

Chesterland

1 ZIP

F

Chickasaw

1 ZIP

B

Chillicothe

1 ZIP

B

Christiansburg

1 ZIP

B

Circleville

1 ZIP

C

Clarington

1 ZIP

D

Clarksburg

1 ZIP

C

Clarksville

1 ZIP

B

Cleves

1 ZIP

A

Clinton

1 ZIP

D

Cloverdale

1 ZIP

D

Clyde

1 ZIP

A

Coalton

1 ZIP

C

Coldwater

1 ZIP

F

College Corner

1 ZIP

C

Columbia Station

1 ZIP

A

Columbiana

1 ZIP

C

Columbus Grove

1 ZIP

F

Commercial Point

1 ZIP

C

Conneaut

1 ZIP

C

Convoy

1 ZIP

A

Coolville

1 ZIP

C

Corning

1 ZIP

B

Cortland

1 ZIP

D

Coshocton

1 ZIP

D

Covington

1 ZIP

B

Crestline

1 ZIP

A

Creston

1 ZIP

F

Crooksville

1 ZIP

D

Cuyahoga Falls

1 ZIP

D

Dalton

1 ZIP

B

Danville

1 ZIP

F

De Graff

1 ZIP

A

Defiance

1 ZIP

F

Delaware

1 ZIP

C

Dellroy

1 ZIP

F

Delphos

1 ZIP

F

Delta

1 ZIP

D

Dennison

1 ZIP

D

Deshler

1 ZIP

A

Dover

1 ZIP

D

Doylestown

1 ZIP

B

Dresden

1 ZIP

D

Dublin

1 ZIP

F

Duncan Falls

1 ZIP

B

Dunkirk

1 ZIP

C

East Liverpool

1 ZIP

F

East Palestine

1 ZIP

B

East Sparta

1 ZIP

B

Eaton

1 ZIP

A

Edgerton

1 ZIP

D

Edon

1 ZIP

F

Eldorado

1 ZIP

A

Elmore

1 ZIP

D

Englewood

1 ZIP

B

Enon

1 ZIP

D

Fairfield

1 ZIP

B

Fayette

1 ZIP

D

Fayetteville

1 ZIP

D

Felicity

1 ZIP

D

Findlay

1 ZIP

C

Fletcher

1 ZIP

B

Flushing

1 ZIP

D

Fort Loramie

1 ZIP

B

Fort Recovery

1 ZIP

D

Fostoria

1 ZIP

F

Fowler

1 ZIP

D

Frankfort

1 ZIP

A

Franklin

1 ZIP

D

Franklin Furnace

1 ZIP

B

Frazeysburg

1 ZIP

D

Fredericksburg

1 ZIP

A

Fredericktown

1 ZIP

C

Freeport

1 ZIP

D

Fremont

1 ZIP

D

Galion

1 ZIP

C

Gallipolis

1 ZIP

A

Gambier

1 ZIP

B

Garrettsville

1 ZIP

F

Geneva

1 ZIP

A

Genoa

1 ZIP

C

Georgetown

1 ZIP

A

Germantown

1 ZIP

F

Gettysburg

1 ZIP

C

Gibsonburg

1 ZIP

C

Girard

1 ZIP

B

Glandorf

1 ZIP

B

Glenford

1 ZIP

B

Glenmont

1 ZIP

D

Glouster

1 ZIP

B

Gnadenhutten

1 ZIP

D

Grafton

1 ZIP

F

Grand Rapids

1 ZIP

F

Granville

1 ZIP

A

Gratis

1 ZIP

D

Green Springs

1 ZIP

D

Greenfield

1 ZIP

B

Greenville

1 ZIP

B

Greenwich

1 ZIP

C

Grove City

1 ZIP

D

Groveport

1 ZIP

D

Hamden

1 ZIP

D

Hamersville

1 ZIP

A

Hamler

1 ZIP

F

Harrison

1 ZIP

C

Harrod

1 ZIP

D

Hartville

1 ZIP

D

Hayesville

1 ZIP

D

Heath

1 ZIP

A

Hebron

1 ZIP

C

Hicksville

1 ZIP

C

Hillsboro

1 ZIP

C

Hinckley

1 ZIP

C

Hiram

1 ZIP

A

Holgate

1 ZIP

D

Holloway

1 ZIP

C

Holmesville

1 ZIP

D

Homer

1 ZIP

D

Hopedale

1 ZIP

B

Hubbard

1 ZIP

A

Hudson

1 ZIP

B

Huntsburg

1 ZIP

A

Huron

1 ZIP

B

Independence

1 ZIP

F

Ironton

1 ZIP

C

Irwin

1 ZIP

F

Jackson

1 ZIP

C

Jackson Center

1 ZIP

B

Jacksonville

1 ZIP

C

Jamestown

1 ZIP

B

Jefferson

1 ZIP

A

Jeffersonville

1 ZIP

F

Jeromesville

1 ZIP

C

Jerusalem

1 ZIP

A

Jewett

1 ZIP

D

Johnstown

1 ZIP

C

Junction City

1 ZIP

D

Kalida

1 ZIP

D

Kelleys Island

1 ZIP

F

Kent

1 ZIP

D

Kenton

1 ZIP

B

KETTERING

1 ZIP

D

Killbuck

1 ZIP

A

Kingston

1 ZIP

D

Kinsman

1 ZIP

D

Lagrange

1 ZIP

B

Laings

1 ZIP

C

Lakemore

1 ZIP

B

Lakeside Marblehead

1 ZIP

C

Lakeview

1 ZIP

B

Lakeville

1 ZIP

C

Lakewood

1 ZIP

B

Lancaster

1 ZIP

B

Laura

1 ZIP

D

Laurelville

1 ZIP

C

Lebanon

1 ZIP

C

Leipsic

1 ZIP

B

Lewis Center

1 ZIP

F

Lewisburg

1 ZIP

B

Liberty Center

1 ZIP

F

Limaville

1 ZIP

C

Lindsey

1 ZIP

C

Lisbon

1 ZIP

A

Lithopolis

1 ZIP

D

Little Hocking

1 ZIP

A

Lockbourne

1 ZIP

D

Lodi

1 ZIP

A

Logan

1 ZIP

D

London

1 ZIP

C

Long Bottom

1 ZIP

D

Loudonville

1 ZIP

A

Louisville

1 ZIP

C

Loveland

1 ZIP

B

Lowell

1 ZIP

C

Lucas

1 ZIP

B

Lucasville

1 ZIP

C

Lynchburg

1 ZIP

F

Lyons

1 ZIP

F

Magnolia

1 ZIP

D

Malinta

1 ZIP

D

Malta

1 ZIP

C

Malvern

1 ZIP

D

Manchester

1 ZIP

B

Mantua

1 ZIP

D

Marietta

1 ZIP

C

Marion

1 ZIP

C

Marshallville

1 ZIP

C

Martins Ferry

1 ZIP

B

Martinsburg

1 ZIP

B

Marysville

1 ZIP

D

Massillon

1 ZIP

C

Masury

1 ZIP

F

Maumee

1 ZIP

D

Mc Arthur

1 ZIP

A

Mc Connelsville

1 ZIP

C

Mc Dermott

1 ZIP

A

Mc Donald

1 ZIP

B

Mc Guffey

1 ZIP

C

Mechanicsburg

1 ZIP

F

Mentor

1 ZIP

D

Miamisburg

1 ZIP

D

Middle Point

1 ZIP

D

Middlebranch

1 ZIP

D

Middlefield

1 ZIP

D

Middleport

1 ZIP

D

Milan

1 ZIP

A

Milford

1 ZIP

F

Milford Center

1 ZIP

C

Millersburg

1 ZIP

D

Millersport

1 ZIP

D

Millfield

1 ZIP

C

Minerva

1 ZIP

D

Mingo Junction

1 ZIP

D

Minster

1 ZIP

D

Mogadore

1 ZIP

D

Monroe

1 ZIP

D

Monroeville

1 ZIP

B

Montpelier

1 ZIP

B

Morristown

1 ZIP

B

Morrow

1 ZIP

C

Mount Blanchard

1 ZIP

D

Mount Gilead

1 ZIP

D

Mount Orab

1 ZIP

D

Mount Pleasant

1 ZIP

F

Mount Sterling

1 ZIP

F

Mount Vernon

1 ZIP

A

Mount Victory

1 ZIP

C

Munroe Falls

1 ZIP

A

Murray City

1 ZIP

B

Napoleon

1 ZIP

C

Navarre

1 ZIP

C

Nelsonville

1 ZIP

F

Nevada

1 ZIP

D

New Athens

1 ZIP

C

New Bremen

1 ZIP

A

New Carlisle

1 ZIP

B

New Concord

1 ZIP

F

New Holland

1 ZIP

D

New Knoxville

1 ZIP

D

New Lebanon

1 ZIP

C

New Lexington

1 ZIP

D

New London

1 ZIP

A

New Matamoras

1 ZIP

C

New Paris

1 ZIP

D

New Philadelphia

1 ZIP

B

New Richmond

1 ZIP

C

New Straitsville

1 ZIP

B

New Vienna

1 ZIP

D

New Waterford

1 ZIP

F

Newark

1 ZIP

C

Newbury

1 ZIP

C

Newcomerstown

1 ZIP

D

Newport

1 ZIP

D

Newton Falls

1 ZIP

D

Ney

1 ZIP

A

Niles

1 ZIP

A

North Baltimore

1 ZIP

C

North Fairfield

1 ZIP

C

North Hampton

1 ZIP

D

North Lewisburg

1 ZIP

F

North Ridgeville

1 ZIP

A

Northfield

1 ZIP

C

Norwalk

1 ZIP

A

Oak Harbor

1 ZIP

B

Oak Hill

1 ZIP

D

Oakwood

1 ZIP

D

Ohio City

1 ZIP

C

Olmsted Falls

1 ZIP

A

Oregon

1 ZIP

A

Orwell

1 ZIP

C

Ottawa

1 ZIP

F

Ottoville

1 ZIP

A

Painesville

1 ZIP

C

Pandora

1 ZIP

C

Pataskala

1 ZIP

B

Paulding

1 ZIP

F

Payne

1 ZIP

F

Peebles

1 ZIP

A

Pemberville

1 ZIP

D

Peninsula

1 ZIP

B

Perrysburg

1 ZIP

D

Perrysville

1 ZIP

C

Phillipsburg

1 ZIP

D

Philo

1 ZIP

F

Pickerington

1 ZIP

A

Piketon

1 ZIP

F

Pioneer

1 ZIP

C

Piqua

1 ZIP

C

Pleasant City

1 ZIP

C

Pleasant Hill

1 ZIP

B

Pleasantville

1 ZIP

D

Plymouth

1 ZIP

B

Pomeroy

1 ZIP

C

Port Clinton

1 ZIP

D

Portsmouth

1 ZIP

A

Powhatan Point

1 ZIP

B

Proctorville

1 ZIP

C

Put In Bay

1 ZIP

F

Quaker City

1 ZIP

C

Quincy

1 ZIP

D

Racine

1 ZIP

C

Ravenna

1 ZIP

C

Rawson

1 ZIP

C

Rayland

1 ZIP

C

Republic

1 ZIP

B

Reynoldsburg

1 ZIP

A

Richwood

1 ZIP

C

Rio Grande

1 ZIP

D

Ripley

1 ZIP

F

Rittman

1 ZIP

C

Rock Creek

1 ZIP

F

Rockford

1 ZIP

D

Rocky River

1 ZIP

A

Roseville

1 ZIP

C

Rossburg

1 ZIP

A

Rushsylvania

1 ZIP

C

Rushville

1 ZIP

A

Russells Point

1 ZIP

D

Russia

1 ZIP

A

Rutland

1 ZIP

C

Sabina

1 ZIP

F

Saint Clairsville

1 ZIP

F

Saint Henry

1 ZIP

D

Saint Marys

1 ZIP

A

Salem

1 ZIP

D

Sandusky

1 ZIP

C

Sarahsville

1 ZIP

D

Sardinia

1 ZIP

D

Sardis

1 ZIP

C

Scio

1 ZIP

F

Seaman

1 ZIP

A

Sebring

1 ZIP

F

Seville

1 ZIP

D

Sheffield Lake

1 ZIP

A

Shelby

1 ZIP

D

Sherwood

1 ZIP

B

Shiloh

1 ZIP

D

Shreve

1 ZIP

D

Sidney

1 ZIP

D

Somerset

1 ZIP

F

Somerville

1 ZIP

B

South Charleston

1 ZIP

B

South Lebanon

1 ZIP

C

South Point

1 ZIP

C

South Solon

1 ZIP

D

South Vienna

1 ZIP

F

Spencer

1 ZIP

C

Spencerville

1 ZIP

B

Spring Valley

1 ZIP

C

Springboro

1 ZIP

C

Stockport

1 ZIP

A

Stow

1 ZIP

D

Strasburg

1 ZIP

C

Streetsboro

1 ZIP

A

Strongsville

1 ZIP

A

Struthers

1 ZIP

C

Sugar Grove

1 ZIP

F

Sugarcreek

1 ZIP

F

Swanton

1 ZIP

D

Sycamore

1 ZIP

D

Sylvania

1 ZIP

A

Syracuse

1 ZIP

B

Tallmadge

1 ZIP

A

Thompson

1 ZIP

D

Thornville

1 ZIP

D

Thurston

1 ZIP

C

Tiltonsville

1 ZIP

C

Tipp City

1 ZIP

F

Tontogany

1 ZIP

A

Toronto

1 ZIP

C

Trenton

1 ZIP

C

Trimble

1 ZIP

B

Troy

1 ZIP

A

Tuscarawas

1 ZIP

D

Upper Sandusky

1 ZIP

C

Urbana

1 ZIP

D

Utica

1 ZIP

C

Van Wert

1 ZIP

F

Vandalia

1 ZIP

B

Vanlue

1 ZIP

B

Vermilion

1 ZIP

F

Verona

1 ZIP

F

Versailles

1 ZIP

D

Vienna

1 ZIP

B

Wadsworth

1 ZIP

A

Wakeman

1 ZIP

D

Walnut Creek

1 ZIP

F

Wapakoneta

1 ZIP

D

Warsaw

1 ZIP

F

Washington Court House

1 ZIP

D

Washingtonville

1 ZIP

D

Waterford

1 ZIP

C

Waterville

1 ZIP

A

Wauseon

1 ZIP

C

Waverly

1 ZIP

C

Wayne

1 ZIP

F

Waynesburg

1 ZIP

D

Waynesfield

1 ZIP

B

Waynesville

1 ZIP

F

Wellington

1 ZIP

D

Wellston

1 ZIP

F

Wellsville

1 ZIP

D

West Alexandria

1 ZIP

B

West Chester

1 ZIP

A

West Farmington

1 ZIP

F

West Jefferson

1 ZIP

B

West Lafayette

1 ZIP

C

West Liberty

1 ZIP

B

West Manchester

1 ZIP

A

West Mansfield

1 ZIP

D

West Milton

1 ZIP

F

West Salem

1 ZIP

C

West Union

1 ZIP

B

West Unity

1 ZIP

B

White Cottage

1 ZIP

F

Whitehouse

1 ZIP

B

Willard

1 ZIP

A

Williamsburg

1 ZIP

D

Williamsport

1 ZIP

D

Willshire

1 ZIP

F

Wilmington

1 ZIP

D

Wilmot

1 ZIP

D

Windham

1 ZIP

C

Winesburg

1 ZIP

C

Woodsfield

1 ZIP

D

Woodstock

1 ZIP

C

Woodville

1 ZIP

B

Wooster

1 ZIP

D

Xenia

1 ZIP

C

Yellow Springs

1 ZIP

A

Yorkville

1 ZIP

D

Zaleski

1 ZIP

C