Normal, IL Radon Levels
Check local Normal radon levels and find certified testing and mitigation professionals to keep your home safe
Normal, IL Radon Facts
Home to Illinois State University in McLean County, Normal sits within the central Illinois prairie region where deep glacial moraine deposits over limestone bedrock contribute to elevated radon potential. Local testing shows an average radon level of 7.25 pCi/L, significantly exceeding the EPA action level of 4.0 pCi/L and underscoring the need for radon testing and mitigation in this Bloomington Metro community.
Based on 4 user-submitted radon tests for homes in Normal, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Normal, IL Radon Mitigation
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Normal, IL Radon Levels
User-submitted radon test readings from homes in the Normal area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 9 pCi/L | Normal, IL | 51-99 Years | Full Basement |
| 5 pCi/L | Normal, IL | 51-99 Years | Full Basement |
| 7 pCi/L | Normal, IL | 0-20 Years | Full Basement |
| 8 pCi/L | Normal, IL | 0-20 Years | Full Basement |
Have a radon test result for Normal? Submit your reading to help other homeowners.
Radon Readings Near Normal, IL
Compare radon levels in Normal with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Bloomington | 3.5 mi | 11.33 pCi/L | 3 |
| Le Roy | 16.6 mi | 5.00 pCi/L | 1 |
| Mackinaw | 18.9 mi | 20.00 pCi/L | 1 |
| Fairbury | 29.5 mi | 4.00 pCi/L | 1 |
| Metamora | 29.9 mi | 7.50 pCi/L | 2 |
| Pontiac | 31.3 mi | 10.50 pCi/L | 2 |
| East Peoria | 31.6 mi | 8.00 pCi/L | 3 |
| Peoria | 35.9 mi | 5.00 pCi/L | 1 |
McLean County Radon Profile
McLean 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 3 cities in McLean County average 8.50 pCi/L across 8 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 McLean County to test, as levels can differ between neighboring homes.