Concord, IL Radon Levels

Q: What EPA Radon Zone is Concord in?

Concord is in Morgan County, EPA Zone 1.

Q: How much does radon mitigation cost in Concord?

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

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

Concord, IL Radon Facts

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

County Morgan County, IL

Zip Code 62631

Situated in Morgan County within zip code 62631, Concord lies in EPA Zone 1, reflecting high radon potential typical of central Illinois geology. Although local testing data is currently unavailable, the region's glacial deposits over limestone bedrock create favorable conditions for radon gas production. Homeowners should conduct radon testing, especially in properties with basements or lower-level living areas common in traditional Illinois construction.

9.00

pCi/L area average

Above EPA Action Level

Morgan County average: 9.00 pCi/L, based on 2 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Concord 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+

Concord, 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 Concord, IL

No homeowner tests have been submitted for Concord 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
Jacksonville	9.8 mi	9.00 pCi/L	2
Griggsville	20.3 mi	4.00 pCi/L	1
White Hall	27.3 mi	6.00 pCi/L	1
Pittsfield	27.7 mi	5.00 pCi/L	1
Lincolns New Salem	34.2 mi	8.00 pCi/L	1
Chatham	36.6 mi	3.00 pCi/L	1
Auburn	37.0 mi	6.00 pCi/L	1
Springfield	38.2 mi	6.50 pCi/L	2

Morgan County Radon Profile

Because of its underlying geology, Morgan County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Morgan County average 9.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Morgan County home regardless of zone or a neighbor's results.

Radon FAQ for Concord, IL

What EPA Radon Zone is Concord in?

Concord and the 62631 zip code are in Morgan 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 Concord?

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

Radon mitigation in Concord 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 Concord?

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.