Rochester, IL Radon Levels

Q: What EPA Radon Zone is Rochester in?

Rochester is in Sangamon County, EPA Zone 1.

Q: How much does radon mitigation cost in Rochester?

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

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

Rochester, IL Radon Facts

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

County Sangamon County, IL

Zip Code 62563

Found in Sangamon County within the Springfield metropolitan area, Rochester lies in central Illinois where glacial moraine deposits over limestone bedrock contribute to radon potential. The community's mix of traditional homes with basements typical of the prairie region can facilitate radon entry and accumulation. Since testing data for zip code 62563 is not yet available, residents should consider individual radon testing.

5.00

pCi/L area average

Above EPA Action Level

Sangamon County average: 5.00 pCi/L, based on 6 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Rochester 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+

Rochester, 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 Rochester, IL

No homeowner tests have been submitted for Rochester 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
Springfield	6.9 mi	6.50 pCi/L	2
Chatham	8.4 mi	3.00 pCi/L	1
Divernon	11.5 mi	7.00 pCi/L	1
Auburn	12.9 mi	6.00 pCi/L	1
Williamsville	16.3 mi	1.00 pCi/L	1
Taylorville	18.5 mi	2.00 pCi/L	1
Lincolns New Salem	24.6 mi	8.00 pCi/L	1
Moweaqua	29.7 mi	7.00 pCi/L	1

Sangamon County Radon Profile

Sangamon 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 5 cities in Sangamon County average 5.00 pCi/L across 6 tests — 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 Sangamon County to test, as levels can differ between neighboring homes.

Radon FAQ for Rochester, IL

What EPA Radon Zone is Rochester in?

Rochester and the 62563 zip code are in Sangamon 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 Rochester?

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

Radon mitigation in Rochester 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 Rochester?

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.