Forest City, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Forest City in?

Forest City is in Mason County, EPA Zone 1.

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

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

Mason County

EPA Zone 1

Rural Mason County community positioned along the Illinois River valley, where alluvial soils meet glacial deposits. With limited radon testing data available, homeowners should establish baseline readings to understand their specific risk. The area features traditional Midwest housing including both older homes with basements and newer construction on varying foundation types.

Forest City, IL Radon Mitigation

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

Forest City, IL Radon Testing

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

Forest City Radon Facts

Key details about the radon risk profile for Forest City and the 61532 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Mason County, IL

Zip Code

61532

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Forest City and the 61532 zip code are located in Mason 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 Forest City, IL

What EPA Radon Zone is Forest City in?

Forest City and the 61532 zip code are in Mason 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 Forest City?

Radon mitigation in Forest 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 Forest 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.

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