New Douglas, IL Radon Levels
Check local New Douglas radon levels and find certified testing and mitigation professionals to keep your home safe
New Douglas, IL Radon Facts
Part of Madison County on the Illinois side of the St. Louis metropolitan area, New Douglas sits where Mississippi River floodplain deposits overlay Mississippian limestone bedrock. The area's mixed housing includes both historic farmhouses and newer suburban developments, with basement foundations common throughout zip code 62074. Although current testing data is limited, the underlying limestone geology suggests moderate radon potential requiring homeowner vigilance.
Madison County average: 5.44 pCi/L, based on 9 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for New Douglas itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.
New Douglas, IL Radon Mitigation
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Radon Readings Near New Douglas, IL
No homeowner tests have been submitted for New Douglas yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Staunton | 4.0 mi | 8.00 pCi/L | 1 |
| Highland | 14.5 mi | 6.00 pCi/L | 1 |
| Troy | 18.2 mi | 4.00 pCi/L | 1 |
| Glen Carbon | 18.9 mi | 2.50 pCi/L | 2 |
| East Alton | 19.4 mi | 4.00 pCi/L | 1 |
| Maryville | 21.4 mi | 11.00 pCi/L | 1 |
| Carlinville | 23.2 mi | 9.00 pCi/L | 1 |
| Collinsville | 23.7 mi | 5.00 pCi/L | 1 |
Madison County Radon Profile
The soils and bedrock of Madison County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 8 cities in Madison County average 5.44 pCi/L across 9 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 Madison County to test, as levels can differ between neighboring homes.