Morris, IL Radon Levels

Q: What EPA Radon Zone is Morris in?

Morris is in Grundy County, EPA Zone 1.

Q: Why are radon readings shown from areas near Morris?

No homeowner radon tests have been submitted for Morris yet, so readings from the closest cities and the Grundy County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Morris?

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

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

Morris, IL Radon Facts

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

County Grundy County, IL

Zip Code 60450

Positioned in Grundy County in the southern suburban reaches of the Chicago Metro, Morris sits on glacial till deposits from the Wisconsin glaciation that create soil conditions highly favorable for radon production. While specific testing data isn't yet available for this 60450 community, the region's geological setting over limestone bedrock suggests elevated radon potential. Residents should test their homes, especially those with full basements typical of the area.

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 Morris 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+

Morris, 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 Morris, IL

No homeowner tests have been submitted for Morris 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	9.7 mi	11.00 pCi/L	1
Newark	12.4 mi	11.00 pCi/L	1
Shorewood	14.2 mi	4.00 pCi/L	1
Marseilles	14.6 mi	9.00 pCi/L	1
Yorkville	18.8 mi	6.00 pCi/L	2
Dwight	19.2 mi	7.00 pCi/L	1
Plainfield	19.7 mi	6.33 pCi/L	3
Joliet	20.7 mi	6.67 pCi/L	3

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 Morris, IL

What EPA Radon Zone is Morris in?

Morris and the 60450 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 Morris?

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

Radon mitigation in Morris 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 Morris?

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.