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Map of Radon Zones in Pennsylvania based on Environmental Protection Agency (EPA) data

Back to Radon Zones in the United States




Radon zones
 Zone 3 (1 county)
 Zone 2 (17 counties)
 Zone 1 (50 counties)
  Highest Potential: counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)
  Moderate Potential: counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones)
  Low Potential: counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)
Adams County
Radon zone : 1

Allegheny County
Radon zone : 1

Armstrong County
Radon zone : 1

Beaver County
Radon zone : 1

Bedford County
Radon zone : 1

Berks County
Radon zone : 1

Blair County
Radon zone : 1

Bradford County
Radon zone : 1

Bucks County
Radon zone : 1

Butler County
Radon zone : 1

Cambria County
Radon zone : 2

Cameron County
Radon zone : 1

Carbon County
Radon zone : 1

Centre County
Radon zone : 1

Chester County
Radon zone : 1

Clarion County
Radon zone : 1

Clearfield County
Radon zone : 1

Clinton County
Radon zone : 1

Columbia County
Radon zone : 1

Crawford County
Radon zone : 2

Cumberland County
Radon zone : 1

Dauphin County
Radon zone : 1

Delaware County
Radon zone : 1

Elk County
Radon zone : 2

Erie County
Radon zone : 2

Fayette County
Radon zone : 2

Forest County
Radon zone : 2

Franklin County
Radon zone : 1

Fulton County
Radon zone : 1

Greene County
Radon zone : 2

Huntingdon County
Radon zone : 1

Indiana County
Radon zone : 1

Jefferson County
Radon zone : 2

Juniata County
Radon zone : 1

Lackawanna County
Radon zone : 1

Lancaster County
Radon zone : 1

Lawrence County
Radon zone : 2

Lebanon County
Radon zone : 1

Lehigh County
Radon zone : 1

Luzerne County
Radon zone : 1

Lycoming County
Radon zone : 1

McKean County
Radon zone : 2

Mercer County
Radon zone : 2

Mifflin County
Radon zone : 1

Monroe County
Radon zone : 1

Montgomery County
Radon zone : 1

Montour County
Radon zone : 1

Northampton County
Radon zone : 1

Northumberland County
Radon zone : 1

Perry County
Radon zone : 1

Philadelphia County
Radon zone : 3

Pike County
Radon zone : 2

Potter County
Radon zone : 2

Schuylkill County
Radon zone : 1

Snyder County
Radon zone : 1

Somerset County
Radon zone : 2

Sullivan County
Radon zone : 1

Susquehanna County
Radon zone : 1

Tioga County
Radon zone : 1

Union County
Radon zone : 1

Venango County
Radon zone : 1

Warren County
Radon zone : 2

Washington County
Radon zone : 2

Wayne County
Radon zone : 2

Westmoreland County
Radon zone : 1

Wyoming County
Radon zone : 1

York County
Radon zone : 1


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