Lancaster, PA Radon Levels
Check local Lancaster radon levels and find certified testing and mitigation professionals to keep your home safe
Lancaster, PA Radon Facts
As the county seat of Lancaster County, this city demonstrates exceptionally high radon potential with an average level of 18.0 pCi/L — well above the EPA action threshold. The region's limestone bedrock and historic building stock contribute to these elevated readings, making mitigation systems essential for homes across zip codes 17601-17603.
Based on 1 user-submitted radon test for homes in Lancaster, PA. The EPA recommends taking action at or above 4.0 pCi/L.
Lancaster, PA Radon Mitigation
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Lancaster, PA Radon Levels
User-submitted radon test readings from homes in the Lancaster area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 18 pCi/L | Lancaster, PA | 21-50 Years | No Basement/All Slab |
Have a radon test result for Lancaster? Submit your reading to help other homeowners.
Radon Readings Near Lancaster, PA
Compare radon levels in Lancaster with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Willow Street | 5.5 mi | 10.00 pCi/L | 1 |
| Strasburg | 8.5 mi | 5.00 pCi/L | 1 |
| Lititz | 10.1 mi | 11.50 pCi/L | 2 |
| Manheim | 10.5 mi | 5.00 pCi/L | 2 |
| Mount Joy | 11.3 mi | 4.00 pCi/L | 1 |
| Wrightsville | 11.5 mi | 10.50 pCi/L | 2 |
| Ephrata | 11.8 mi | 10.33 pCi/L | 3 |
| Marietta | 13.2 mi | 5.00 pCi/L | 1 |
Lancaster County Radon Profile
Lancaster County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 9 cities in Lancaster County average 9.00 pCi/L across 15 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Lancaster County to test, as levels can differ between neighboring homes.