LocalDataPoint

Maryland Water Quality

Water hardness and quality data for 131 cities in Maryland, USA.

State average

149mg/L

8.7 gpg

Hardness level

🟠 Hard

10 lab-verified

Cities

131

140 with data

Baltimore

Pop. 585,708

Hard
120–179 mg/Lreservoir

PFAS: 19 ppt

Full report →

Annapolis

Pop. 40,812

Hard
120–179 mg/Lgroundwater

PFAS: 0 ppt

Full report →

Aspen Hill

Pop. 48,759

Hard
120–179 mg/Lreservoir

PFAS: 5.1 ppt

Full report →

Bel Air North

Unincorporated area

Pop. 30,568

Hard
120–179 mg/Lreservoir

PFAS: 120 ppt

Full report →

Bel Air South

Unincorporated area

Pop. 47,709

🟠 Hard
122 mg/Lreservoir

PFAS: 120 ppt

Full report →

Bethesda

Pop. 60,858

Hard
120–179 mg/Lgroundwater

PFAS: 7.9 ppt

Full report →

Bowie

Pop. 58,025

Hard
172 mg/Lgroundwater

PFAS: 0 ppt

Full report →

Catonsville

Pop. 41,567

🟠 Hard
141 mg/Lreservoir

PFAS: 6.4 ppt

Full report →

Chillum

Pop. 33,513

Hard
120–179 mg/Lreservoir

PFAS: 8.4 ppt

Full report →

Clinton

Pop. 35,970

Hard
120–179 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

College Park

Pop. 32,301

Hard
120–179 mg/Lreservoir

PFAS: 10 ppt

Full report →

Columbia

Pop. 99,615

Hard
120–179 mg/Lreservoir

PFAS: 13.3 ppt

Full report →

Dundalk

Pop. 63,597

Hard
120–179 mg/Lreservoir

PFAS: 7.9 ppt

Full report →

Eldersburg

Pop. 30,531

Hard
120–179 mg/Lreservoir

PFAS: 9 ppt

Full report →

Ellicott City

Pop. 65,834

🟠 Hard
141 mg/Lreservoir

PFAS: 9.2 ppt

Full report →

Essex

Pop. 39,262

Hard
120–179 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

Frederick

Pop. 69,479

Hard
120–179 mg/Lreservoir

PFAS: 3.3 ppt

Full report →

Gaithersburg

Pop. 67,456

Hard
120–179 mg/Lreservoir

PFAS: 6.5 ppt

Full report →

Germantown

Pop. 86,395

Hard
120–179 mg/Lreservoir

PFAS: 7.1 ppt

Full report →

Glen Burnie

Pop. 67,639

Hard
120–179 mg/Lreservoir

PFAS: 7.5 ppt

Full report →

Gwynn Oak

Pop. 47,092

Hard
120–179 mg/Lreservoir

PFAS: 10 ppt

Full report →

Hagerstown

Pop. 40,432

Hard
120–179 mg/Lreservoir

PFAS: 0 ppt

Full report →

Hanover

Pop. 38,088

Hard
120–179 mg/Lreservoir

PFAS: 10.6 ppt

Full report →

Montgomery Village

Unincorporated area

Pop. 32,032

Soft
0–59 mg/Lreservoir

PFAS: 4.3 ppt

Full report →

North Bel Air

Unincorporated area

Pop. 33,925

🟠 Hard
122 mg/Lreservoir

PFAS: 7.2 ppt

Full report →

North Bethesda

Unincorporated area

Pop. 43,828

Hard
134 mg/Lreservoir

PFAS: 7.2 ppt

Full report →

Odenton

Pop. 37,132

Hard
120–179 mg/Lreservoir

PFAS: 8.6 ppt

Full report →

Olney

Pop. 33,844

Hard
120–179 mg/Lreservoir

PFAS: 9.1 ppt

Full report →

Owings Mills

Pop. 30,622

Hard
120–179 mg/Lreservoir

PFAS: 9.6 ppt

Full report →

Oxon Hill-Glassmanor

Pop. 35,355

Hard
120–179 mg/Lreservoir

PFAS: 5.9 ppt

Full report →

Parkville

Pop. 30,734

Hard
120–179 mg/Lreservoir

PFAS: 10.2 ppt

Full report →

Pikesville

Pop. 30,764

Hard
120–179 mg/Lreservoir

PFAS: 4.4 ppt

Full report →

Potomac

Pop. 44,965

Hard
120–179 mg/Lgroundwater

PFAS: 6.1 ppt

Full report →

Randallstown

Pop. 32,430

Hard
120–179 mg/Lreservoir

PFAS: 7.4 ppt

Full report →

Rockville

Pop. 66,980

Hard
120–179 mg/Lreservoir

PFAS: 9.3 ppt

Full report →

Saint Charles

Pop. 36,376

Hard
120–179 mg/Lreservoir

PFAS: 10.8 ppt

Full report →

Salisbury

Pop. 32,899

Hard
121.5 mg/Lgroundwater

PFAS: 68.7 ppt

Full report →

Severn

Pop. 44,231

Hard
120–179 mg/Lgroundwater

PFAS: 7.7 ppt

Full report →

Severna Park

Pop. 37,634

Hard
120–179 mg/Lgroundwater

PFAS: 7.8 ppt

Full report →

Silver Spring

Pop. 71,452

Soft
0–59 mg/Lreservoir

PFAS: 8.8 ppt

Full report →

South Bel Air

Unincorporated area

Pop. 48,828

🟠 Hard
122 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

St. Charles

Pop. 33,379

Soft
0–59 mg/Lreservoir

PFAS: 7.5 ppt

Full report →

Suitland-Silver Hill

Pop. 33,515

Hard
120–179 mg/Lreservoir

PFAS: 7.6 ppt

Full report →

Towson

Pop. 55,197

Hard
120–179 mg/Lreservoir

PFAS: 7.2 ppt

Full report →

Waldorf

Pop. 67,752

Hard
120–179 mg/Lgroundwater

PFAS: 10 ppt

Full report →

Wheaton

Pop. 48,284

Hard
120–179 mg/Lreservoir

PFAS: 5 ppt

Full report →

Woodlawn

Pop. 37,879

Hard
120–179 mg/Lreservoir

PFAS: 6.9 ppt

Full report →

Aberdeen

Pop. 15,580

Hard
120–179 mg/Lreservoir

PFAS: 108.1 ppt

Full report →

Accokeek

Pop. 10,573

Hard
120–179 mg/Lgroundwater

PFAS: 10.4 ppt

Full report →

Adelphi

Pop. 15,086

Hard
120–179 mg/Lreservoir

PFAS: 10.5 ppt

Full report →

Arbutus

Pop. 20,483

Very Hard
180+ mg/Lreservoir

PFAS: 4.6 ppt

Full report →

Arnold

Pop. 23,106

Hard
120–179 mg/Lreservoir

PFAS: 4.7 ppt

Full report →

Ballenger Creek

Pop. 18,274

Hard
120–179 mg/Lreservoir

PFAS: 5.8 ppt

Full report →

Bel Air

Pop. 10,190

🟠 Hard
122 mg/Lreservoir

PFAS: 120 ppt

Full report →

Beltsville

Pop. 16,772

Hard
120–179 mg/Lreservoir

PFAS: 7.2 ppt

Full report →

Bennsville

Pop. 11,923

Hard
120–179 mg/Lreservoir

PFAS: 7.4 ppt

Full report →

Brooklyn Park

Pop. 14,373

Hard
120–179 mg/Lreservoir

PFAS: 10.6 ppt

Full report →

California

Pop. 11,857

Hard
120–179 mg/Lgroundwater

PFAS: 0 ppt

Full report →

Calverton

Pop. 17,724

Very Hard
180+ mg/Lreservoir

PFAS: 5.1 ppt

Full report →

Cambridge

Pop. 12,507

Hard
120–179 mg/Lgroundwater

PFAS: 0 ppt

Full report →

Camp Springs

Pop. 19,096

Hard
120–179 mg/Lreservoir

PFAS: 5.5 ppt

Full report →

Canton

Pop. 12,731

Hard
120–179 mg/Lreservoir

PFAS: 5.6 ppt

Full report →

Carney

Pop. 29,941

Hard
120–179 mg/Lreservoir

PFAS: 5.8 ppt

Full report →

Chesapeake Ranch Estates

Pop. 10,519

Hard
148 mg/Lreservoir

PFAS: 8 ppt

Full report →

Chesapeake Ranch Estates-Drum Point

Pop. 11,503

Moderately Hard
60–119 mg/Lreservoir

PFAS: 5 ppt

Full report →

Clarksburg

Pop. 13,766

Hard
120–179 mg/Lgroundwater

PFAS: 9.3 ppt

Full report →

Cloverly

Pop. 15,126

Hard
120–179 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

Cockeysville

Pop. 20,776

Hard
120–179 mg/Lreservoir

PFAS: 9.8 ppt

Full report →

Colesville

Pop. 14,647

Hard
120–179 mg/Lreservoir

PFAS: 10 ppt

Full report →

Crofton

Pop. 27,348

Hard
120–179 mg/Lgroundwater

PFAS: 4.6 ppt

Full report →

Cumberland

Pop. 20,130

Hard
120–179 mg/Lreservoir

PFAS: 0 ppt

Full report →

Damascus

Pop. 15,257

Hard
120–179 mg/Lreservoir

PFAS: 5.1 ppt

Full report →

East Riverdale

Pop. 15,509

Hard
120–179 mg/Lreservoir

PFAS: 8.3 ppt

Full report →

Easton

Pop. 16,617

🟢 Soft
50 mg/Lgroundwater

PFAS: 0 ppt

Full report →

Edgewood

Pop. 25,562

Hard
120–179 mg/Lreservoir

PFAS: 8.8 ppt

Full report →

Elkridge

Pop. 15,593

Hard
120–179 mg/Lreservoir

PFAS: 9.2 ppt

Full report →

Elkton

Pop. 15,782

Hard
120–179 mg/Lreservoir

PFAS: 425.4 ppt

Full report →

Fairland

Pop. 23,681

Hard
120–179 mg/Lreservoir

PFAS: 10.1 ppt

Full report →

Ferndale

Pop. 16,746

Hard
120–179 mg/Lreservoir

PFAS: 10.7 ppt

Full report →

Forestville

Pop. 12,353

Hard
120–179 mg/Lreservoir

PFAS: 5 ppt

Full report →

Fort Washington

Pop. 23,717

Hard
120–179 mg/Lreservoir

PFAS: 5.2 ppt

Full report →

Frankford

Pop. 17,135

Soft
0–59 mg/Lreservoir

PFAS: 4.6 ppt

Full report →

Glassmanor

Pop. 17,295

Hard
120–179 mg/Lreservoir

PFAS: 7.4 ppt

Full report →

Glenmont

Pop. 13,529

Hard
120–179 mg/Lreservoir

PFAS: 7.7 ppt

Full report →

Glenn Dale

Pop. 13,466

Hard
120–179 mg/Lreservoir

PFAS: 7.7 ppt

Full report →

Greater Upper Marlboro

Pop. 18,720

Hard
120–179 mg/Lreservoir

PFAS: 6.5 ppt

Full report →

Green Haven

Pop. 19,326

Hard
120–179 mg/Lreservoir

PFAS: 9.1 ppt

Full report →

Green Valley

Pop. 12,262

Hard
120–179 mg/Lreservoir

PFAS: 9.2 ppt

Full report →

Greenbelt

Pop. 24,272

Hard
120–179 mg/Lreservoir

PFAS: 9.2 ppt

Full report →

Halfway

Pop. 10,701

Hard
120–179 mg/Lreservoir

PFAS: 10.1 ppt

Full report →

Havre de Grace

Pop. 13,504

🟡 Moderately Hard
70 mg/Lreservoir

PFAS: 0 ppt

Full report →

Hillcrest Heights

Pop. 16,469

Hard
120–179 mg/Lreservoir

PFAS: 5.6 ppt

Full report →

Hunt Valley

Pop. 23,915

Hard
120–179 mg/Lreservoir

PFAS: 7.3 ppt

Full report →

Hyattsville

Pop. 18,501

Hard
120–179 mg/Lreservoir

PFAS: 7.6 ppt

Full report →

Ilchester

Pop. 23,476

🟠 Hard
141 mg/Lreservoir

PFAS: 7.7 ppt

Full report →

Joppatowne

Pop. 12,616

Hard
120–179 mg/Lreservoir

PFAS: 9.8 ppt

Full report →

Kemp Mill

Pop. 12,564

🟠 Hard
141 mg/Lreservoir

PFAS: 10 ppt

Full report →

Kettering

Pop. 12,790

Hard
120–179 mg/Lreservoir

PFAS: 10.4 ppt

Full report →

Lake Shore

Pop. 19,477

Hard
120–179 mg/Lreservoir

PFAS: 4.4 ppt

Full report →

Landover

Pop. 23,078

Hard
120–179 mg/Lgroundwater

PFAS: 4.6 ppt

Full report →

Langley Park

Pop. 18,755

Hard
120–179 mg/Lreservoir

PFAS: 4.7 ppt

Full report →

Lanham

Pop. 10,157

Hard
120–179 mg/Lreservoir

PFAS: 4.7 ppt

Full report →

Lanham-Seabrook

Pop. 18,190

Hard
120–179 mg/Lreservoir

PFAS: 7 ppt

Full report →

Largo

Pop. 10,709

Hard
120–179 mg/Lreservoir

PFAS: 4.8 ppt

Full report →

Laurel

Pop. 26,215

Hard
120–179 mg/Lreservoir

PFAS: 37 ppt

Full report →

Lexington Park

Pop. 11,626

Hard
120–179 mg/Lgroundwater

PFAS: 5.4 ppt

Full report →

Linthicum

Pop. 10,324

Hard
120–179 mg/Lgroundwater

PFAS: 5.8 ppt

Full report →

Lochearn

Pop. 25,333

Hard
120–179 mg/Lreservoir

PFAS: 6.4 ppt

Full report →

Lutherville-Timonium

Pop. 15,814

Hard
120–179 mg/Lreservoir

PFAS: 7.1 ppt

Full report →

Maryland City

Pop. 16,093

Hard
120–179 mg/Lreservoir

PFAS: 8.8 ppt

Full report →

Mays Chapel

Pop. 11,420

Hard
120–179 mg/Lreservoir

PFAS: 9.2 ppt

Full report →

Middle River

Pop. 25,191

Very Hard
186 mg/Lreservoir

PFAS: 10.2 ppt

Full report →

Milford Mill

Pop. 29,042

Hard
120–179 mg/Lreservoir

PFAS: 10.4 ppt

Full report →

Mitchellville

Pop. 10,967

Hard
120–179 mg/Lreservoir

PFAS: 10.9 ppt

Full report →

New Carrollton

Pop. 12,786

Hard
120–179 mg/Lreservoir

PFAS: 6.6 ppt

Full report →

North Potomac

Pop. 24,410

Very Hard
180+ mg/Lreservoir

PFAS: 7.6 ppt

Full report →

Ocean Pines

Pop. 11,710

Very Hard
180+ mg/Lgroundwater

PFAS: 8.5 ppt

Full report →

Overlea

Pop. 12,275

Hard
120–179 mg/Lreservoir

PFAS: 9.5 ppt

Full report →

Oxon Hill

Pop. 17,722

Hard
120–179 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

Parole

Pop. 15,922

Hard
120–179 mg/Lreservoir

PFAS: 10.3 ppt

Full report →

Pasadena

Pop. 24,287

Hard
120–179 mg/Lreservoir

PFAS: 10.3 ppt

Full report →

Perry Hall

Pop. 28,474

Hard
120–179 mg/Lreservoir

PFAS: 11 ppt

Full report →

Redland

Pop. 17,242

Hard
120–179 mg/Lreservoir

PFAS: 7.7 ppt

Full report →

Reisterstown

Pop. 25,968

Hard
120–179 mg/Lreservoir

PFAS: 7.8 ppt

Full report →

Riviera Beach

Pop. 12,677

Hard
120–179 mg/Lreservoir

PFAS: 8.7 ppt

Full report →

Rosaryville

Pop. 10,697

Hard
120–179 mg/Lreservoir

PFAS: 9.7 ppt

Full report →

Rosedale

Pop. 19,257

Hard
120–179 mg/Lreservoir

PFAS: 9.8 ppt

Full report →

Rossville

Pop. 15,147

Hard
120–179 mg/Lreservoir

PFAS: 9.9 ppt

Full report →

Scaggsville

Pop. 24,333

Hard
120–179 mg/Lreservoir

PFAS: 7 ppt

Full report →

Seabrook

Pop. 17,287

Hard
120–179 mg/Lreservoir

PFAS: 7.4 ppt

Full report →

South Gate

Unincorporated area

Pop. 29,658

Hard
120–179 mg/Lreservoir

PFAS: 9.8 ppt

Full report →

South Laurel

Unincorporated area

Pop. 26,112

Very Hard
180.5 mg/Lreservoir

PFAS: 9.9 ppt

Full report →

Suitland

Pop. 25,825

Hard
120–179 mg/Lreservoir

PFAS: 4.6 ppt

Full report →

Summerfield

Pop. 10,898

Hard
120–179 mg/Lreservoir

PFAS: 6.1 ppt

Full report →

Takoma Park

Pop. 17,713

Hard
120–179 mg/Lreservoir

PFAS: 5.4 ppt

Full report →

Travilah

Pop. 12,159

Hard
120–179 mg/Lreservoir

PFAS: 7.4 ppt

Full report →

Walker Mill

Pop. 11,302

Hard
120–179 mg/Lreservoir

PFAS: 10 ppt

Full report →

West Elkridge

Unincorporated area

Pop. 28,734

Hard
120–179 mg/Lreservoir

PFAS: 4.4 ppt

Full report →

Westminster

Pop. 18,670

Hard
120–179 mg/Lreservoir

PFAS: 583.9 ppt

Full report →

White Oak

Pop. 17,403

Hard
120–179 mg/Lreservoir

PFAS: 5.3 ppt

Full report →