North Wales, PA Radon Levels
Check local North Wales radon levels and find certified testing and mitigation professionals to keep your home safe
North Wales, PA Radon Facts
This Philadelphia Metro community in Montgomery County recorded an average radon level of 7.0 pCi/L in zip code 19454, significantly exceeding EPA action guidelines. Built on southeastern Pennsylvania's complex geology of limestone, shale, and granite, North Wales sits in an area where radon accumulation in basements and lower levels is common. Homeowners should prioritize radon testing and strongly consider mitigation systems when levels exceed 4.0 pCi/L, particularly in the area's prevalent basement-equipped housing stock.
Based on 1 user-submitted radon test for homes in North Wales, PA. The EPA recommends taking action at or above 4.0 pCi/L.
North Wales, PA Radon Mitigation
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North Wales, PA Radon Levels
User-submitted radon test readings from homes in the North Wales area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | North Wales, PA | 0-20 Years | Partial Basement |
Have a radon test result for North Wales? Submit your reading to help other homeowners.
Radon Readings Near North Wales, PA
Compare radon levels in North Wales with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Lansdale | 2.5 mi | 3.00 pCi/L | 1 |
| Ambler | 3.3 mi | 4.00 pCi/L | 1 |
| Hatfield | 4.7 mi | 6.00 pCi/L | 1 |
| Horsham | 6.2 mi | 20.00 pCi/L | 1 |
| Warminster | 8.8 mi | 11.00 pCi/L | 3 |
| Glenside | 9.1 mi | 7.00 pCi/L | 1 |
| Abington | 9.9 mi | 8.00 pCi/L | 1 |
| Doylestown | 10.4 mi | 11.33 pCi/L | 3 |
Montgomery County Radon Profile
Because of its underlying geology, Montgomery 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 16 cities in Montgomery County average 8.41 pCi/L across 17 tests — 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 Montgomery County home regardless of zone or a neighbor's results.