Harrisburg, PA Radon Levels
Check local Harrisburg radon levels and find certified testing and mitigation professionals to keep your home safe
Harrisburg, PA Radon Facts
Pennsylvania's capital city in Dauphin County shows significant radon concerns with an average level of 13.0 pCi/L, more than three times the EPA action threshold of 4.0 pCi/L. Built on limestone bedrock and situated in the Susquehanna River valley, Harrisburg's geological conditions contribute to these elevated readings across its diverse housing stock. Homeowners in zip code 17101 should prioritize immediate radon testing and mitigation given these concerning levels and the city's complex geological setting.
Based on 1 user-submitted radon test for homes in Harrisburg, PA. The EPA recommends taking action at or above 4.0 pCi/L.
Harrisburg, PA Radon Mitigation
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Harrisburg, PA Radon Levels
User-submitted radon test readings from homes in the Harrisburg area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 13 pCi/L | Harrisburg, PA | 21-50 Years | — |
Have a radon test result for Harrisburg? Submit your reading to help other homeowners.
Radon Readings Near Harrisburg, PA
Compare radon levels in Harrisburg with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Enola | 4.9 mi | 20.00 pCi/L | 1 |
| Mechanicsburg | 10.3 mi | 13.75 pCi/L | 4 |
| Elizabethtown | 15.6 mi | 9.67 pCi/L | 3 |
| Annville | 16.9 mi | 14.00 pCi/L | 1 |
| Dover | 18.7 mi | 13.00 pCi/L | 1 |
| Carlisle | 19.7 mi | 11.33 pCi/L | 3 |
| Marietta | 21.0 mi | 5.00 pCi/L | 1 |
| Mount Joy | 21.5 mi | 4.00 pCi/L | 1 |
Dauphin County Radon Profile
Because of its underlying geology, Dauphin County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Dauphin County average 13.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Dauphin County home regardless of zone or a neighbor's results.