Paris, IL Radon Levels
Check local Paris radon levels and find certified testing and mitigation professionals to keep your home safe
Paris, IL Radon Facts
Situated in Edgar County along the Illinois-Indiana border, Paris has recorded an average radon level of 9.67 pCi/L based on testing in zip code 61944. This level substantially exceeds the EPA action threshold, reflecting east-central Illinois geology where glacial deposits over Pennsylvanian limestone create high radon potential. Local homeowners should prioritize testing and mitigation, as the area's older housing stock with full basements provides ideal conditions for radon accumulation.
Based on 3 user-submitted radon tests for homes in Paris, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Paris, IL Radon Mitigation
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Paris, IL Radon Levels
User-submitted radon test readings from homes in the Paris area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 20 pCi/L | Paris, IL | 51-99 Years | Full Basement |
| 5 pCi/L | Paris, IL | 21-50 Years | Partial Basement |
| 4 pCi/L | Paris, IL | 100+ Years | Full Basement |
Have a radon test result for Paris? Submit your reading to help other homeowners.
Radon Readings Near Paris, IL
Compare radon levels in Paris with the closest nearby cities that have user-submitted test data.
Edgar County Radon Profile
Because of its underlying geology, Edgar 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 1 city in Edgar County average 9.67 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 Edgar County home regardless of zone or a neighbor's results.