Collison, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Collison in?

Collison is in Vermilion County, EPA Zone 1.

Q: How much does radon mitigation cost in Collison?

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

Vermilion County

EPA Zone 1

This small Vermilion County community in the central Illinois prairie region sits atop deep glacial moraine deposits over limestone bedrock that contribute to moderate-to-high radon potential. Testing data for zip code 61831 remains limited, emphasizing the importance of individual home radon measurement. The area's loess and glacial drift soils over Pennsylvanian shale and limestone create conditions where radon levels can vary significantly between neighboring properties.

Collison, IL Radon Mitigation

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

Collison, IL Radon Testing

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

Collison Radon Facts

Key details about the radon risk profile for Collison and the 61831 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Vermilion County, IL

Zip Code

61831

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Collison and the 61831 zip code are located in Vermilion 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 Collison, IL

What EPA Radon Zone is Collison in?

Collison and the 61831 zip code are in Vermilion 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 Collison?

Radon mitigation in Collison 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 Collison?

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