Griggsville, IL Radon Levels
Check local Griggsville radon levels and find certified testing and mitigation professionals to keep your home safe
Griggsville, IL Radon Facts
Griggsville lies in Pike County along Illinois' western border, where Mississippi River valley geology creates variable radon conditions across the landscape. Based on available testing data, the community shows an average radon level of 4.0 pCi/L, which meets the EPA action threshold and suggests homeowners should consider radon mitigation. The area's mix of older farmhouses and more recent construction in zip code 62340 can influence individual home radon concentrations.
Based on 1 user-submitted radon test for homes in Griggsville, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Griggsville, IL Radon Mitigation
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Griggsville, IL Radon Levels
User-submitted radon test readings from homes in the Griggsville area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Griggsville, IL | 0-20 Years | Full Basement |
Have a radon test result for Griggsville? Submit your reading to help other homeowners.
Radon Readings Near Griggsville, IL
Compare radon levels in Griggsville with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Pittsfield | 8.6 mi | 5.00 pCi/L | 1 |
| White Hall | 25.9 mi | 6.00 pCi/L | 1 |
| Jacksonville | 26.4 mi | 9.00 pCi/L | 2 |
| Quincy | 36.5 mi | 7.50 pCi/L | 2 |
| Jerseyville | 45.6 mi | 3.50 pCi/L | 2 |
Pike County Radon Profile
The bedrock and soils beneath Pike 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 2 cities in Pike County average 4.50 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 Pike County.