Effingham, IL Radon Levels
Check local Effingham radon levels and find certified testing and mitigation professionals to keep your home safe
Effingham, IL Radon Facts
Centered in Effingham County in central Illinois, Effingham shows an average radon level of 4.33 pCi/L based on limited local testing, which slightly exceeds the EPA's 4.0 pCi/L action threshold. Built on deep glacial deposits over Pennsylvanian limestone typical of the Illinois prairie, the community features a mix of historic downtown structures and suburban residential development in zip code 62401. Given these borderline elevated readings, all Effingham residents should test their homes and consider mitigation if individual levels consistently exceed EPA guidelines.
Based on 3 user-submitted radon tests for homes in Effingham, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Effingham, IL Radon Mitigation
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Effingham, IL Radon Levels
User-submitted radon test readings from homes in the Effingham area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 6 pCi/L | Effingham, IL | 21-50 Years | Full Basement |
| 4 pCi/L | Effingham, IL | 21-50 Years | Full Basement |
| 3 pCi/L | Effingham, IL | 21-50 Years | Full Basement |
Have a radon test result for Effingham? Submit your reading to help other homeowners.
Radon Readings Near Effingham, IL
Compare radon levels in Effingham with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Shelbyville | 26.7 mi | 17.00 pCi/L | 1 |
| Mattoon | 26.7 mi | 9.33 pCi/L | 3 |
| Charleston | 32.6 mi | 8.00 pCi/L | 1 |
| Moweaqua | 42.5 mi | 7.00 pCi/L | 1 |
| Kell | 46.0 mi | 5.00 pCi/L | 1 |
| Taylorville | 49.1 mi | 2.00 pCi/L | 1 |
| Tuscola | 49.1 mi | 17.00 pCi/L | 1 |
Effingham County Radon Profile
EPA mapping assigns Effingham 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 1 city in Effingham County average 4.33 pCi/L across 3 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 Effingham County home regardless of zone or a neighbor's results.