Winchester, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Winchester in?

Winchester is in Scott County, EPA Zone 1.

Q: How much does radon mitigation cost in Winchester?

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

Scott County

EPA Zone 1

Nestled in rural Scott County along the Illinois River valley, Winchester features a mix of historic farmhouses and newer homes built over limestone bedrock. Radon testing data remains limited for this small community in zip code 62694, making individual home testing particularly important. The underlying geology and older foundation types common in this area can create pathways for radon entry.

Winchester, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Winchester, IL Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Winchester Radon Facts

Key details about the radon risk profile for Winchester and the 62694 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Scott County, IL

Zip Code

62694

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Winchester and the 62694 zip code are located in Scott County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Winchester, IL

What EPA Radon Zone is Winchester in?

Winchester and the 62694 zip code are in Scott 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.

How much does radon mitigation cost in Winchester?

Radon mitigation in Winchester 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 Winchester?

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.

Most Active Radon Markets in Illinois

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Buffalo Grove	6.10 pCi/L	10
Crystal Lake	7.25 pCi/L	8
Lake Zurich	6.00 pCi/L	7
Grayslake	5.00 pCi/L	7
New Lenox	10.17 pCi/L	6
Park Ridge	7.00 pCi/L	6
Arlington Heights	6.17 pCi/L	6
Waterloo	9.20 pCi/L	5
Palatine	7.80 pCi/L	5
Round Lake	7.80 pCi/L	5
Northbrook	6.20 pCi/L	5
Mchenry	11.00 pCi/L	4
Dekalb	8.75 pCi/L	4
Columbia	8.00 pCi/L	4
Lisle	7.25 pCi/L	4
Normal	7.25 pCi/L	4
Antioch	7.00 pCi/L	4
Elk Grove Village	7.00 pCi/L	4
Aurora	6.75 pCi/L	4
Hoffman Estates	6.75 pCi/L	4