Keithsburg, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Keithsburg in?

Keithsburg is in Mercer County, EPA Zone 1.

Q: How much does radon mitigation cost in Keithsburg?

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

Mercer County

EPA Zone 1

Positioned along the Mississippi River in Mercer County, Keithsburg sits on Illinois River valley alluvial soils combined with underlying Ordovician limestone that creates variable radon conditions. The community's housing reflects typical river town architecture with many homes featuring basements or partial foundations. Testing data is currently limited for the 61442 area, making individual home testing essential for residents to understand their radon exposure risk.

Keithsburg, IL Radon Mitigation

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

Keithsburg, IL Radon Testing

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

Keithsburg Radon Facts

Key details about the radon risk profile for Keithsburg and the 61442 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Mercer County, IL

Zip Code

61442

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Keithsburg and the 61442 zip code are located in Mercer 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 Keithsburg, IL

What EPA Radon Zone is Keithsburg in?

Keithsburg and the 61442 zip code are in Mercer 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 Keithsburg?

Radon mitigation in Keithsburg 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 Keithsburg?

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