Quincy, IL Radon Levels
Check local Quincy radon levels and find certified testing and mitigation professionals to keep your home safe
Quincy, IL Radon Facts
Mississippi River city in Adams County in western Illinois, Quincy (zip code 62301) shows an average radon level of 7.5 pCi/L from available testing data, nearly double the EPA's 4.0 pCi/L action level. The area's river bluff geology combines loess deposits with underlying limestone bedrock, creating conditions favorable for radon accumulation in the community's historic homes and newer construction with basements. Radon mitigation systems are strongly recommended for homeowners given these elevated readings.
Based on 2 user-submitted radon tests for homes in Quincy, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Quincy, IL Radon Mitigation
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Quincy, IL Radon Levels
User-submitted radon test readings from homes in the Quincy area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Quincy, IL | 100+ Years | Full Basement |
| 11 pCi/L | Quincy, IL | 51-99 Years | Partial Basement |
Have a radon test result for Quincy? Submit your reading to help other homeowners.
Radon Readings Near Quincy, IL
Compare radon levels in Quincy with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Griggsville | 36.5 mi | 4.00 pCi/L | 1 |
| Pittsfield | 36.9 mi | 5.00 pCi/L | 1 |
| Dallas City | 44.7 mi | 9.00 pCi/L | 1 |
Adams County Radon Profile
The bedrock and soils beneath Adams County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Adams County average 7.50 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Adams County.