Longville, MN Radon Levels
Check local Longville radon levels and find certified testing and mitigation professionals to keep your home safe
Longville, MN Radon Facts
Nestled among northern Minnesota's lake country in Cass County, Longville shows an average radon level of 7.5 pCi/L that significantly exceeds the EPA action threshold, requiring immediate attention. The area's glacial lake deposits over Precambrian granite create ideal conditions for radon accumulation, particularly in the region's many homes with full basements. Residents in zip code 56655 should prioritize professional radon testing and mitigation, especially given the community's seasonal occupancy patterns that can affect ventilation.
Based on 2 user-submitted radon tests for homes in Longville, MN. The EPA recommends taking action at or above 4.0 pCi/L.
Longville, MN Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Longville, MN Radon Levels
User-submitted radon test readings from homes in the Longville area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Longville, MN | 21-50 Years | Full Basement |
| 8 pCi/L | Longville, MN | 21-50 Years | Full Basement |
Have a radon test result for Longville? Submit your reading to help other homeowners.
Radon Readings Near Longville, MN
Compare radon levels in Longville with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Hackensack | 14.6 mi | 4.00 pCi/L | 2 |
| Walker | 18.7 mi | 4.00 pCi/L | 1 |
| Crosslake | 24.3 mi | 9.00 pCi/L | 1 |
| Pequot Lakes | 27.8 mi | 8.00 pCi/L | 1 |
| Deer River | 29.7 mi | 10.00 pCi/L | 1 |
| Laporte | 30.9 mi | 4.00 pCi/L | 1 |
| Nevis | 31.2 mi | 4.00 pCi/L | 1 |
| Nisswa | 37.1 mi | 4.00 pCi/L | 1 |
Cass County Radon Profile
EPA mapping assigns Cass County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 4 cities in Cass County average 5.67 pCi/L across 6 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 Cass County home regardless of zone or a neighbor's results.