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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

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Madison County, IL
Zip Code 62074

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.

5.44
pCi/L area average
Above EPA Action Level

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.

0
4.0 EPA
10+

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.

CityDistanceAvg User LevelReadings
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.

Radon FAQ for New Douglas, IL

What EPA Radon Zone is New Douglas in?
New Douglas and the 62074 zip code are in Madison County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
Why are radon readings shown from areas near New Douglas?
No homeowner radon tests have been submitted for New Douglas yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Madison County average—are the best available indicator of local conditions until New Douglas homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.
How much does radon mitigation cost in New Douglas?
Radon mitigation in New Douglas typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in New Douglas?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.