York, PA Radon Levels
Check local York radon levels and find certified testing and mitigation professionals to keep your home safe
York, PA Radon Facts
Central Pennsylvania's York County seat sits atop limestone and shale formations that contribute to some of the state's highest radon readings. York's 11.67 pCi/L average radon level substantially exceeds EPA guidelines, with readings ranging from 6.0 to 20.0 pCi/L across the metro area. The city's historic neighborhoods and suburban developments across multiple zip codes feature predominantly basement construction that concentrates this naturally occurring radioactive gas.
Based on 3 user-submitted radon tests for homes in York, PA. The EPA recommends taking action at or above 4.0 pCi/L.
York, PA Radon Mitigation
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York, PA Radon Levels
User-submitted radon test readings from homes in the York area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 9 pCi/L | York, PA | 0-20 Years | Full Basement |
| 20 pCi/L | York, PA | 21-50 Years | — |
| 6 pCi/L | York, PA | 51-99 Years | Full Basement |
Have a radon test result for York? Submit your reading to help other homeowners.
Radon Readings Near York, PA
Compare radon levels in York with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Dallastown | 4.4 mi | 6.00 pCi/L | 1 |
| Seven Valleys | 7.3 mi | 17.00 pCi/L | 1 |
| Dover | 8.3 mi | 13.00 pCi/L | 1 |
| Wrightsville | 10.1 mi | 10.50 pCi/L | 2 |
| Marietta | 10.8 mi | 5.00 pCi/L | 1 |
| Glen Rock | 12.4 mi | 14.33 pCi/L | 3 |
| Shrewsbury | 13.9 mi | 5.00 pCi/L | 1 |
| Stewartstown | 14.3 mi | 11.00 pCi/L | 2 |
York County Radon Profile
York 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 13 cities in York County average 12.74 pCi/L across 23 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 York County to test, as levels can differ between neighboring homes.