Dewey, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Dewey in?

Dewey is in Champaign County, EPA Zone 1.

Q: How much does radon mitigation cost in Dewey?

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

Champaign County

EPA Zone 1

Part of Champaign County in central Illinois, Dewey sits on deep glacial moraine deposits over limestone bedrock that contribute to moderate-to-high radon potential across the central prairie region. While specific testing data for this 61840 zip code area is limited, the geological context suggests homeowners should conduct radon testing. The combination of glacial drift and underlying Pennsylvanian limestone creates favorable conditions for radon gas production.

Dewey, IL Radon Mitigation

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

Dewey, IL Radon Testing

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

Dewey Radon Facts

Key details about the radon risk profile for Dewey and the 61840 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Champaign County, IL

Zip Code

61840

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Dewey and the 61840 zip code are located in Champaign 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 Dewey, IL

What EPA Radon Zone is Dewey in?

Dewey and the 61840 zip code are in Champaign 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 Dewey?

Radon mitigation in Dewey 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 Dewey?

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