Delaware Tap Water Quality

Explore tap water quality data for counties across Delaware. View water system reports, track violations, monitor drinking water safety, and check fluoridation status in your community.

Counties

53

With water systems

Population

989,456

Served by water systems

Water Systems

202

Total water systems

Violators

1

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.

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Delaware Counties

Bear

Population: 115,557

Water Systems: 1

Bethany Beach

Population: 42,465

Water Systems: 3

Bowers Beach

Population: 129

Water Systems: 1

Bridgeville

Population: 4,408

Water Systems: 4

Camden Wyoming

Population: 23,446

Water Systems: 6

Cheswold

Population: 3,318

Water Systems: 5

Clayton

Population: 7,014

Water Systems: 1

Dagsboro

Population: 2,233

Water Systems: 7

Delaware

Population: 1,872

Water Systems: 1

Delmar

Population: 2,756

Water Systems: 4

Dewey Beach

Population: 31,078

Water Systems: 2

Dover

Population: 42,934

Water Systems: 9

Dover Afb

Population: 11,000

Water Systems: 1

Ellendale

Population: 1,016

Water Systems: 5

Felton

Population: 2,748

Water Systems: 8

Fenwick Island

Population: 12,264

Water Systems: 4

Frankford

Population: 443

Water Systems: 4

Frederica

Population: 1,811

Water Systems: 2

Georgetown

Population: 9,610

Water Systems: 10

Greenwood

Population: 1,088

Water Systems: 3

Harbeson

Population: 432

Water Systems: 1

Harrington

Population: 3,875

Water Systems: 6

Hartly

Population: 420

Water Systems: 2

Hockessin

Population: 115,557

Water Systems: 1

Kenton

Population: 618

Water Systems: 3

Laurel

Population: 5,674

Water Systems: 6

Lebanon

Population: 54

Water Systems: 1

Lewes

Population: 17,376

Water Systems: 8

Lincoln

Population: 1,077

Water Systems: 4

Little Creek

Population: 399

Water Systems: 2

Magnolia

Population: 10,499

Water Systems: 6

Marydel

Population: 123

Water Systems: 1

Middletown

Population: 28,761

Water Systems: 9

Milford

Population: 13,907

Water Systems: 4

Millsboro

Population: 20,949

Water Systems: 13

Millville

Population: 37,531

Water Systems: 2

Milton

Population: 4,340

Water Systems: 5

Montchanin

Population: 60

Water Systems: 1

New Castle

Population: 55,611

Water Systems: 2

Newark

Population: 40,000

Water Systems: 1

Ocean View

Population: 3,079

Water Systems: 4

Odessa

Population: 5,730

Water Systems: 2

Port Penn

Population: 214

Water Systems: 1

Rehoboth Beach

Population: 102,207

Water Systems: 6

Rising Sun

Population: 65

Water Systems: 1

Serious Violator

Seaford

Population: 11,331

Water Systems: 14

Selbyville

Population: 3,502

Water Systems: 1

Slaughter Beach

Population: 846

Water Systems: 1

Smyrna

Population: 28,865

Water Systems: 8

Townsend

Population: 204

Water Systems: 1

Viola

Population: 50

Water Systems: 1

Wilmington

Population: 158,223

Water Systems: 2

Winterthur

Population: 687

Water Systems: 1