Maryland Water Quality

162 ZIP codes analyzed across 149 cities. Average water quality score: 61/100 (national average: 50/100).

Frederick

4 ZIPs

A

Annapolis

3 ZIPs

A

Baltimore

3 ZIPs

A

Elkton

2 ZIPs

D

Ellicott City

2 ZIPs

F

Lutherville Timonium

2 ZIPs

A

Potomac

2 ZIPs

B

Salisbury

2 ZIPs

A

Waldorf

2 ZIPs

A

Aberdeen

1 ZIP

A

Abingdon

1 ZIP

B

Accident

1 ZIP

B

Accokeek

1 ZIP

B

Bel Air

1 ZIP

A

Berlin

1 ZIP

C

Bethesda

1 ZIP

D

Betterton

1 ZIP

C

Bishopville

1 ZIP

A

Boonsboro

1 ZIP

D

Bowie

1 ZIP

A

Brandywine

1 ZIP

A

Brunswick

1 ZIP

A

California

1 ZIP

A

Cambridge

1 ZIP

A

Cascade

1 ZIP

A

Cecilton

1 ZIP

B

Centreville

1 ZIP

D

Charlotte Hall

1 ZIP

D

Chesapeake Beach

1 ZIP

A

Chesapeake City

1 ZIP

B

Chester

1 ZIP

D

Chestertown

1 ZIP

C

Childs

1 ZIP

C

Church Hill

1 ZIP

A

Claiborne

1 ZIP

D

Clarksburg

1 ZIP

C

Colora

1 ZIP

C

Columbia

1 ZIP

D

Crisfield

1 ZIP

A

Crofton

1 ZIP

B

Cumberland

1 ZIP

A

Darlington

1 ZIP

B

Delmar

1 ZIP

B

Denton

1 ZIP

D

Dunkirk

1 ZIP

A

Earleville

1 ZIP

A

East New Market

1 ZIP

C

Easton

1 ZIP

B

Emmitsburg

1 ZIP

D

Federalsburg

1 ZIP

D

Finksburg

1 ZIP

C

Fort George G Meade

1 ZIP

C

Frostburg

1 ZIP

A

Fruitland

1 ZIP

C

Funkstown

1 ZIP

A

Gaithersburg

1 ZIP

B

Gambrills

1 ZIP

B

Glen Arm

1 ZIP

D

Grantsville

1 ZIP

A

Grasonville

1 ZIP

B

Greensboro

1 ZIP

D

Hagerstown

1 ZIP

C

Halethorpe

1 ZIP

B

Hampstead

1 ZIP

B

Hancock

1 ZIP

B

Havre De Grace

1 ZIP

D

Hebron

1 ZIP

D

Hollywood

1 ZIP

C

Huntingtown

1 ZIP

C

Hurlock

1 ZIP

B

Hyattsville

1 ZIP

C

Indian Head

1 ZIP

C

Jessup

1 ZIP

C

Kennedyville

1 ZIP

A

La Plata

1 ZIP

B

Leonardtown

1 ZIP

C

Lexington Park

1 ZIP

B

Linthicum Heights

1 ZIP

A

Lonaconing

1 ZIP

C

Lothian

1 ZIP

B

Luke

1 ZIP

B

Lusby

1 ZIP

B

Manchester

1 ZIP

D

Marbury

1 ZIP

A

Middletown

1 ZIP

B

Midlothian

1 ZIP

B

Millersville

1 ZIP

A

Millington

1 ZIP

A

Mount Airy

1 ZIP

C

Mount Savage

1 ZIP

F

Myersville

1 ZIP

A

New Windsor

1 ZIP

B

Newburg

1 ZIP

C

North Beach

1 ZIP

B

North East

1 ZIP

F

Oakland

1 ZIP

B

Ocean City

1 ZIP

D

Owings Mills

1 ZIP

D

Oxford

1 ZIP

B

Parsonsburg

1 ZIP

C

Patuxent River

1 ZIP

D

Perry Point

1 ZIP

F

Perryville

1 ZIP

D

Pikesville

1 ZIP

A

Pittsville

1 ZIP

B

Pocomoke City

1 ZIP

B

Poolesville

1 ZIP

D

Port Deposit

1 ZIP

D

Port Republic

1 ZIP

A

Preston

1 ZIP

B

Prince Frederick

1 ZIP

A

Princess Anne

1 ZIP

D

Queen Anne

1 ZIP

B

Queenstown

1 ZIP

C

Randallstown

1 ZIP

D

Rawlings

1 ZIP

D

Reisterstown

1 ZIP

A

Ridgely

1 ZIP

B

Rising Sun

1 ZIP

F

Rock Hall

1 ZIP

A

Rosedale

1 ZIP

A

Saint Leonard

1 ZIP

B

Saint Michaels

1 ZIP

C

Secretary

1 ZIP

C

Severn

1 ZIP

A

Severna Park

1 ZIP

A

Sharpsburg

1 ZIP

A

Sharptown

1 ZIP

D

Silver Spring

1 ZIP

A

Smithsburg

1 ZIP

C

Snow Hill

1 ZIP

D

Stevenson

1 ZIP

C

Stevensville

1 ZIP

A

Street

1 ZIP

D

Sunderland

1 ZIP

C

Swanton

1 ZIP

D

Sykesville

1 ZIP

D

Taneytown

1 ZIP

D

Thurmont

1 ZIP

D

Tylerton

1 ZIP

F

Union Bridge

1 ZIP

B

Vienna

1 ZIP

A

Walkersville

1 ZIP

B

Westernport

1 ZIP

B

Westminster

1 ZIP

C

White Hall

1 ZIP

C

Willards

1 ZIP

C

Williamsport

1 ZIP

B

Woodsboro

1 ZIP

C