Glenarm, IL Radon Levels

Q: What EPA Radon Zone is Glenarm in?

Glenarm is in Sangamon County, EPA Zone 1.

Q: How much does radon mitigation cost in Glenarm?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Glenarm radon levels and find certified testing and mitigation professionals to keep your home safe

Glenarm, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Sangamon County, IL

Zip Code 62536

Found in Sangamon County within the Springfield Metro area, Glenarm sits on deep glacial deposits over limestone bedrock that contribute to elevated radon potential across central Illinois. Testing data for zip code 62536 remains limited, making individual radon testing crucial given the area's EPA Zone 1 designation. This small agricultural community's housing, typically featuring full basements common to the region, provides ideal conditions for radon accumulation.

5.00

pCi/L area average

Above EPA Action Level

Sangamon County average: 5.00 pCi/L, based on 6 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Glenarm itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Glenarm, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Glenarm, IL

No homeowner tests have been submitted for Glenarm 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
Chatham	4.0 mi	3.00 pCi/L	1
Divernon	4.4 mi	7.00 pCi/L	1
Auburn	5.4 mi	6.00 pCi/L	1
Springfield	11.0 mi	6.50 pCi/L	2
Taylorville	20.2 mi	2.00 pCi/L	1
Williamsville	23.0 mi	1.00 pCi/L	1
Carlinville	26.2 mi	9.00 pCi/L	1
Lincolns New Salem	28.4 mi	8.00 pCi/L	1

Sangamon County Radon Profile

Sangamon County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 5 cities in Sangamon County average 5.00 pCi/L across 6 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 Sangamon County to test, as levels can differ between neighboring homes.

Radon FAQ for Glenarm, IL

What EPA Radon Zone is Glenarm in?

Glenarm and the 62536 zip code are in Sangamon County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Glenarm?

No homeowner radon tests have been submitted for Glenarm yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Sangamon County average—are the best available indicator of local conditions until Glenarm 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 Glenarm?

Radon mitigation in Glenarm 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 Glenarm?

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.