Mount Joy, PA Radon Levels
Check local Mount Joy radon levels and find certified testing and mitigation professionals to keep your home safe
Mount Joy, PA Radon Facts
Positioned in Lancaster County within the Lancaster Metro area, Mount Joy shows an average radon level of 4.0 pCi/L, right at the EPA action threshold. This small community sits in Pennsylvania's limestone-rich Lancaster Valley where Ordovician formations create conditions highly favorable for radon production. Homes in zip code 17552 include many older properties with stone foundations that can allow significant radon entry, making testing and potential mitigation important considerations.
Based on 1 user-submitted radon test for homes in Mount Joy, PA. The EPA recommends taking action at or above 4.0 pCi/L.
Mount Joy, PA Radon Mitigation
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Mount Joy, PA Radon Levels
User-submitted radon test readings from homes in the Mount Joy area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Mount Joy, PA | 0-20 Years | Full Basement |
Have a radon test result for Mount Joy? Submit your reading to help other homeowners.
Radon Readings Near Mount Joy, PA
Compare radon levels in Mount Joy with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Marietta | 4.1 mi | 5.00 pCi/L | 1 |
| Elizabethtown | 5.9 mi | 9.67 pCi/L | 3 |
| Manheim | 6.5 mi | 5.00 pCi/L | 2 |
| Wrightsville | 7.8 mi | 10.50 pCi/L | 2 |
| Lancaster | 11.3 mi | 18.00 pCi/L | 1 |
| Lititz | 12.2 mi | 11.50 pCi/L | 2 |
| York | 14.8 mi | 11.67 pCi/L | 3 |
| Dallastown | 15.5 mi | 6.00 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.