Coal City, IL Radon Levels

Q: What EPA Radon Zone is Coal City in?

Coal City is in Grundy County, EPA Zone 1.

Q: How much does radon mitigation cost in Coal City?

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

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

Coal City, IL Radon Facts

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

County Grundy County, IL

Zip Code 60416

Coal City in Grundy County sits in the southern suburban reaches of the Chicago metro, where glacial till deposits from the Wisconsin glaciation create soil conditions highly favorable for radon gas production and migration. Though specific local testing data is limited, residents of this zip 60416 community should test their homes given the geological context. The area's predominantly single-family homes with full basements provide the enclosed below-grade spaces where radon accumulates most readily.

11.00

pCi/L area average

Above EPA Action Level

Grundy County average: 11.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Coal City 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+

Coal City, 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 Coal City, IL

No homeowner tests have been submitted for Coal City 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
Minooka	11.8 mi	11.00 pCi/L	1
Shorewood	15.4 mi	4.00 pCi/L	1
Dwight	15.6 mi	7.00 pCi/L	1
Manhattan	18.5 mi	8.00 pCi/L	1
Joliet	18.8 mi	6.67 pCi/L	3
Crest Hill	20.6 mi	6.00 pCi/L	1
Newark	20.7 mi	11.00 pCi/L	1
Marseilles	21.6 mi	9.00 pCi/L	1

Grundy County Radon Profile

Grundy 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 1 city in Grundy County average 11.00 pCi/L across 1 test — 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 Grundy County to test, as levels can differ between neighboring homes.

Radon FAQ for Coal City, IL

What EPA Radon Zone is Coal City in?

Coal City and the 60416 zip code are in Grundy 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 Coal City?

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

Radon mitigation in Coal City 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 Coal City?

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.