Smithfield, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Smithfield in?

Smithfield is in Fulton County, EPA Zone 1.

Q: How much does radon mitigation cost in Smithfield?

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

Fulton County

EPA Zone 1

Positioned in Fulton County along the Illinois River valley, Smithfield sits on alluvial soils over dolomite bedrock that can create variable radon conditions throughout west-central Illinois. The community's housing includes both historic turn-of-the-century homes and postwar construction, many featuring full basements common to traditional Midwest architecture. Given the absence of recent testing data for zip code 61477, residents should prioritize professional radon assessment to ensure safe indoor air quality in this EPA Zone 1 area.

Smithfield, IL Radon Mitigation

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

Smithfield, IL Radon Testing

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

Smithfield Radon Facts

Key details about the radon risk profile for Smithfield and the 61477 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fulton County, IL

Zip Code

61477

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Smithfield and the 61477 zip code are located in Fulton 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 Smithfield, IL

What EPA Radon Zone is Smithfield in?

Smithfield and the 61477 zip code are in Fulton 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 Smithfield?

Radon mitigation in Smithfield 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 Smithfield?

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