Gardner, IL Radon Levels

Q: What EPA Radon Zone is Gardner in?

Gardner is in Grundy County, EPA Zone 1.

Q: How much does radon mitigation cost in Gardner?

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

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

Gardner, IL Radon Facts

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

County Grundy County, IL

Zip Code 60424

Positioned in Grundy County in the southern suburban reaches of the Chicago metro, Gardner rests on glacial till deposits that create soil conditions highly favorable for radon gas production and migration. Testing data for zip code 60424 remains limited, so residents should prioritize radon measurement given the area's geological context. The community'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 Gardner 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+

Gardner, 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 Gardner, IL

No homeowner tests have been submitted for Gardner 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
Dwight	7.4 mi	7.00 pCi/L	1
Minooka	19.9 mi	11.00 pCi/L	1
Marseilles	21.3 mi	9.00 pCi/L	1
Shorewood	23.7 mi	4.00 pCi/L	1
Bourbonnais	23.9 mi	4.00 pCi/L	1
Bradley	25.0 mi	5.00 pCi/L	1
Manhattan	25.5 mi	8.00 pCi/L	1
Pontiac	25.9 mi	10.50 pCi/L	2

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 Gardner, IL

What EPA Radon Zone is Gardner in?

Gardner and the 60424 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 Gardner?

No homeowner radon tests have been submitted for Gardner 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 Gardner 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 Gardner?

Radon mitigation in Gardner 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 Gardner?

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.