Colfax, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Colfax in?

Colfax is in McLean County, EPA Zone 1.

Q: How much does radon mitigation cost in Colfax?

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

McLean County

EPA Zone 1

Situated in McLean County within the Bloomington metro region, Colfax lies on deep glacial deposits over limestone bedrock that characterize central Illinois's elevated radon potential. Although specific testing data for the 61728 area is limited, the geological conditions strongly suggest homeowners should conduct radon testing. The community's mix of traditional homes with full basements and rural properties means radon accumulation patterns can vary significantly throughout the area.

Colfax, IL Radon Mitigation

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

Colfax, IL Radon Testing

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

Colfax Radon Facts

Key details about the radon risk profile for Colfax and the 61728 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

McLean County, IL

Zip Code

61728

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Colfax and the 61728 zip code are located in McLean 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 Colfax, IL

What EPA Radon Zone is Colfax in?

Colfax and the 61728 zip code are in McLean 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 Colfax?

Radon mitigation in Colfax 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 Colfax?

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