Middletown, IL Radon Levels

Q: What EPA Radon Zone is Middletown in?

Middletown is in Logan County, EPA Zone 1.

Q: How much does radon mitigation cost in Middletown?

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

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

Middletown, IL Radon Facts

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

County Logan County, IL

Zip Code 62666

This Logan County community in central Illinois sits within the Springfield Metro area, where deep glacial moraine deposits over limestone bedrock contribute to moderate-to-high radon potential. Testing data remains limited for zip code 62666, making professional radon testing essential for homeowners in this prairie region. Given the area's geological characteristics and housing stock of older homes with full basements, establishing radon levels through testing is strongly recommended.

8.27

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.27 pCi/L, based on 15 tests from 10 nearby cities. No readings have been submitted for Middletown yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Middletown, 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 Middletown, IL

No homeowner tests have been submitted for Middletown 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
Williamsville	10.0 mi	1.00 pCi/L	1
Lincolns New Salem	11.7 mi	8.00 pCi/L	1
Springfield	21.4 mi	6.50 pCi/L	2
Chatham	30.0 mi	3.00 pCi/L	1
Mackinaw	33.0 mi	20.00 pCi/L	1
Auburn	35.9 mi	6.00 pCi/L	1
Mapleton	36.3 mi	8.00 pCi/L	1
Divernon	36.7 mi	7.00 pCi/L	1

Logan County Radon Profile

The bedrock and soils beneath Logan County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. User-submitted readings are still sparse within Logan County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. 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 Logan County.

Radon FAQ for Middletown, IL

What EPA Radon Zone is Middletown in?

Middletown and the 62666 zip code are in Logan 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 Middletown?

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

Radon mitigation in Middletown 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 Middletown?

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.