Pennsylvania Radon Testing & Mitigation

Connecting you with DEP-certified professionals across the Commonwealth

40% of PA homes exceed EPA's 4.0 pCi/L action level
Find DEP-Certified Pros Near You

Find Radon Professionals in Your City

Philadelphia
Philadelphia County
Zone 1
Avg radon level: 3.8 pCi/L
Pittsburgh
Allegheny County
Zone 2
Avg radon level: 3.2 pCi/L
State College
Centre County
Zone 1
Avg radon level: 5.7 pCi/L
Reading
Berks County
Zone 1
Avg radon level: 5.1 pCi/L
Allentown
Lehigh County
Zone 1
Avg radon level: 4.4 pCi/L
Harrisburg
Dauphin County
Zone 2
Avg radon level: 2.9 pCi/L
Erie
Erie County
Zone 2
Avg radon level: 2.6 pCi/L
Scranton
Lackawanna County
Zone 2
Avg radon level: 2.8 pCi/L
Lancaster
Lancaster County
Zone 2
Avg radon level: 2.5 pCi/L
Bellefonte
Centre County
Zone 1
Avg radon level: 5.4 pCi/L
Bethlehem
Northampton County
Zone 1
Avg radon level: 4.3 pCi/L
Carlisle
Cumberland County
Zone 1
Avg radon level: 4.1 pCi/L
Carbondale
Lackawanna County
Zone 2
Avg radon level: 2.7 pCi/L
Columbia
Lancaster County
Zone 2
Avg radon level: 2.4 pCi/L
Corry
Erie County
Zone 2
Avg radon level: 2.7 pCi/L
Easton
Northampton County
Zone 1
Avg radon level: 4 pCi/L
Hawley
Wayne County
Zone 2
Avg radon level: 2.5 pCi/L
Kutztown
Berks County
Zone 1
Avg radon level: 4.9 pCi/L
Lock Haven
Clinton County
Zone 1
Avg radon level: 3.9 pCi/L
Meadville
Crawford County
Zone 2
Avg radon level: 2.5 pCi/L
Philipsburg
Centre County
Zone 1
Avg radon level: 4.5 pCi/L
Pittston
Luzerne County
Zone 2
Avg radon level: 2.9 pCi/L
Pottstown
Montgomery County
Zone 1
Avg radon level: 4.2 pCi/L
Stroudsburg
Monroe County
Zone 2
Avg radon level: 3 pCi/L
Warren
Warren County
Zone 2
Avg radon level: 2.7 pCi/L
Wilkes-Barre
Luzerne County
Zone 2
Avg radon level: 3 pCi/L
York
York County
Zone 2
Avg radon level: 2.8 pCi/L
Chester
Delaware County
Zone 1
Avg radon level: 3.7 pCi/L
Titusville
Crawford County
Zone 2
Avg radon level: 2.7 pCi/L
Oil City
Venango County
Zone 2
Avg radon level: 2.6 pCi/L
Honesdale
Wayne County
Zone 2
Avg radon level: 2.4 pCi/L
Hershey
Dauphin County
Zone 2
Avg radon level: 2.8 pCi/L
Williamsport
Lycoming County
Zone 1
Avg radon level: 3.6 pCi/L
Hazleton
Luzerne County
Zone 1
Avg radon level: 4.2 pCi/L
King of Prussia
Montgomery County
Zone 1
Avg radon level: 4.5 pCi/L
Phoenixville
Chester County
Zone 1
Avg radon level: 5.3 pCi/L
Mechanicsburg
Cumberland County
Zone 1
Avg radon level: 5.8 pCi/L
Gettysburg
Adams County
Zone 1
Avg radon level: 5.1 pCi/L
Hanover
York County
Zone 1
Avg radon level: 4.3 pCi/L
Elizabethtown
Lancaster County
Zone 1
Avg radon level: 5.6 pCi/L
Sharon
Mercer County
Zone 2
Avg radon level: 2.4 pCi/L
Media
Delaware County
Zone 1
Avg radon level: 3.9 pCi/L
Nanticoke
Luzerne County
Zone 1
Avg radon level: 3.4 pCi/L
Jamestown
Mercer County
Zone 2
Avg radon level: 2.1 pCi/L
Milford
Pike County
Zone 1
Avg radon level: 3.7 pCi/L
Hamburg
Berks County
Zone 1
Avg radon level: 5.4 pCi/L
Fleetwood
Berks County
Zone 1
Avg radon level: 6.2 pCi/L
Jersey Shore
Lycoming County
Zone 1
Avg radon level: 3.5 pCi/L
Clearfield
Clearfield County
Zone 2
Avg radon level: 2.7 pCi/L
Snow Shoe
Centre County
Zone 1
Avg radon level: 4.8 pCi/L
Centre Hall
Centre County
Zone 1
Avg radon level: 6.5 pCi/L
Marietta
Lancaster County
Zone 1
Avg radon level: 5 pCi/L
Marcus Hook
Delaware County
Zone 1
Avg radon level: 3 pCi/L
Ridley Park
Delaware County
Zone 1
Avg radon level: 4 pCi/L
Shippensburg
Cumberland County
Zone 1
Avg radon level: 5.5 pCi/L
Altoona
Blair County
Zone 1
Avg radon level: N/A
Johnstown
Cambria County
Zone 1
Avg radon level: N/A
Doylestown
Bucks County
Zone 1
Avg radon level: N/A
New Hope
Bucks County
Zone 1
Avg radon level: N/A
Lewisburg
Union County
Zone 1
Avg radon level: N/A
Canonsburg
Washington County
Zone 1
Avg radon level: N/A
Greensburg
Westmoreland County
Zone 1
Avg radon level: N/A
Butler
Butler County
Zone 1
Avg radon level: N/A
New Castle
Lawrence County
Zone 1
Avg radon level: N/A
Uniontown
Fayette County
Zone 1
Avg radon level: N/A
Waynesburg
Greene County
Zone 2
Avg radon level: N/A
Indiana
Indiana County
Zone 1
Avg radon level: N/A
Kittanning
Armstrong County
Zone 1
Avg radon level: N/A
Beaver
Beaver County
Zone 1
Avg radon level: N/A
Clarion
Clarion County
Zone 1
Avg radon level: N/A
Brookville
Jefferson County
Zone 1
Avg radon level: N/A
Somerset
Somerset County
Zone 1
Avg radon level: N/A
Lebanon
Lebanon County
Zone 1
Avg radon level: N/A
Chambersburg
Franklin County
Zone 1
Avg radon level: N/A
Mifflintown
Juniata County
Zone 1
Avg radon level: N/A
Lewistown
Mifflin County
Zone 1
Avg radon level: N/A
New Bloomfield
Perry County
Zone 1
Avg radon level: N/A
Huntingdon
Huntingdon County
Zone 1
Avg radon level: N/A
Bedford
Bedford County
Zone 1
Avg radon level: N/A
Danville
Montour County
Zone 1
Avg radon level: N/A
Sunbury
Northumberland County
Zone 1
Avg radon level: N/A
Middleburg
Snyder County
Zone 1
Avg radon level: N/A
Bloomsburg
Columbia County
Zone 1
Avg radon level: N/A
Pottsville
Schuylkill County
Zone 1
Avg radon level: N/A
Jim Thorpe
Carbon County
Zone 1
Avg radon level: N/A
Towanda
Bradford County
Zone 2
Avg radon level: N/A
Montrose
Susquehanna County
Zone 2
Avg radon level: N/A
Tunkhannock
Wyoming County
Zone 1
Avg radon level: N/A
Laporte
Sullivan County
Zone 2
Avg radon level: N/A
Smethport
McKean County
Zone 2
Avg radon level: N/A
Emporium
Cameron County
Zone 2
Avg radon level: N/A
Ridgway
Elk County
Zone 1
Avg radon level: N/A
Tionesta
Forest County
Zone 2
Avg radon level: N/A
Wellsboro
Tioga County
Zone 2
Avg radon level: N/A
Coudersport
Potter County
Zone 2
Avg radon level: N/A
McConnellsburg
Fulton County
Zone 1
Avg radon level: N/A

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Comprehensive coverage of the 2026–2027 school testing mandate, mitigation timelines, and public reporting requirements for Pennsylvania districts.

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Local Geological Data

City-level risk data tied to Reading Prong granite, Marcellus Shale, and Appalachian geology — not just statewide averages.

Verify Contractor Certification — PA DEP Official Directory

View PA DEP Certified Contractor Directory

The PA Department of Environmental Protection maintains the official list of certified radon testers and mitigators, sorted by county and updated monthly. Always verify certification before hiring any contractor.

Directory resource provided by PA DEP Bureau of Radiation Protection, Radon Division.

Understanding Radon Risk in Pennsylvania

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PA Radon Hub is an independent informational resource. We do not perform radon testing or mitigation. We connect homeowners with independent, DEP-certified radon professionals.