Northfield, MN Radon Levels
Check local Northfield radon levels and find certified testing and mitigation professionals to keep your home safe
Northfield, MN Radon Facts
Northfield in Rice County shows radon levels averaging 4.5 pCi/L, just above the EPA's 4.0 pCi/L action threshold, indicating the need for resident attention. This Minneapolis-St. Paul metro area community sits above glacial deposits and underlying limestone bedrock that contribute to radon production throughout southeastern Minnesota. Residents of zip code 55057 should consider radon testing, especially in the area's characteristic basement-equipped homes from various construction eras.
Based on 2 user-submitted radon tests for homes in Northfield, MN. The EPA recommends taking action at or above 4.0 pCi/L.
Northfield, MN Radon Mitigation
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Northfield, MN Radon Levels
User-submitted radon test readings from homes in the Northfield area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Northfield, MN | 51-99 Years | Partial Basement |
| 5 pCi/L | Northfield, MN | 100+ Years | Full Basement |
Have a radon test result for Northfield? Submit your reading to help other homeowners.
Radon Readings Near Northfield, MN
Compare radon levels in Northfield with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Elko New Market | 10.8 mi | 3.00 pCi/L | 1 |
| Faribault | 12.7 mi | 10.00 pCi/L | 2 |
| Farmington | 14.1 mi | 7.50 pCi/L | 2 |
| Lakeville | 15.6 mi | 6.00 pCi/L | 1 |
| Montgomery | 20.5 mi | 5.00 pCi/L | 1 |
| Prior Lake | 21.1 mi | 5.00 pCi/L | 1 |
| New Prague | 21.2 mi | 9.00 pCi/L | 2 |
| Savage | 22.7 mi | 5.00 pCi/L | 3 |
Rice County Radon Profile
Because of its underlying geology, Rice 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 2 cities in Rice County average 7.25 pCi/L across 4 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 Rice County home regardless of zone or a neighbor's results.