Clifton, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Clifton in?

Clifton is in Iroquois County, EPA Zone 1.

Q: How much does radon mitigation cost in Clifton?

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

Iroquois County

EPA Zone 1

Located in Iroquois County within the central Illinois prairie region, Clifton sits atop deep glacial moraine deposits over limestone bedrock that contribute to moderate-to-high radon potential. The community's mix of historic homes and postwar ranch-style construction, many featuring full or partial basements, provides typical below-grade spaces where radon can accumulate. Testing data remains limited for zip code 60927, making professional radon testing essential for all homeowners in this area.

Clifton, IL Radon Mitigation

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

Clifton, IL Radon Testing

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

Clifton Radon Facts

Key details about the radon risk profile for Clifton and the 60927 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Iroquois County, IL

Zip Code

60927

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Clifton and the 60927 zip code are located in Iroquois 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 Clifton, IL

What EPA Radon Zone is Clifton in?

Clifton and the 60927 zip code are in Iroquois 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 Clifton?

Radon mitigation in Clifton 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 Clifton?

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