waterbycounty

Pennsylvania Water Quality

Drinking water data for all 67 counties.

Avg Water Score

99.6

State Grade

A

Counties with Data

67

of 67 total

All Pennsylvania Counties

CountyWater Score
Allegheny County100.0
Bucks County100.0
Cameron County100.0
Cumberland County100.0
Forest County100.0
Fulton County100.0
Lebanon County100.0
Lehigh County100.0
Montgomery County100.0
Northumberland County100.0
Philadelphia County100.0
Westmoreland County100.0
Adams County99.9
Berks County99.9
Blair County99.9
Butler County99.9
Centre County99.9
Clearfield County99.9
Columbia County99.9
Dauphin County99.9
Delaware County99.9
Erie County99.9
Fayette County99.9
Franklin County99.9
Huntingdon County99.9
Lackawanna County99.9
Lancaster County99.9
Lawrence County99.9
Luzerne County99.9
Mifflin County99.9
Northampton County99.9
Schuylkill County99.9
Somerset County99.9
Union County99.9
York County99.9
Beaver County99.8
Bradford County99.8
Chester County99.8
Clinton County99.7
Elk County99.7
Jefferson County99.7
Mercer County99.7
Montour County99.7
Susquehanna County99.7
Lycoming County99.6
Potter County99.6
Venango County99.6
Washington County99.6
Clarion County99.5
Crawford County99.5
Snyder County99.5
Tioga County99.5
Cambria County99.4
Carbon County99.4
Greene County99.4
Pike County99.3
Juniata County99.1
Monroe County99.1
Perry County98.9
Wayne County98.6
Armstrong County98.5
Indiana County98.5
McKean County98.5
Bedford County98.3
Warren County98.3
Wyoming County98.3
Sullivan County98.2

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Data Source

Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

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