Calhoun, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Calhoun in?

Calhoun is in Richland County, EPA Zone 2.

Q: How much does radon mitigation cost in Calhoun?

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

Richland County

EPA Zone 2

Situated in southeastern Illinois within Richland County, Calhoun lies in a region where Pennsylvanian-era coal measures and underlying limestone create moderate radon potential. Although comprehensive testing data for this rural community remains sparse, the geological conditions warrant individual home testing. Many properties in zip code 62419 feature older farmhouse construction with partial basements that could concentrate radon if present.

Calhoun, IL Radon Mitigation

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

Calhoun, IL Radon Testing

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

Calhoun Radon Facts

Key details about the radon risk profile for Calhoun and the 62419 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Richland County, IL

Zip Code

62419

Predicted Screening Level

2–4 pCi/L (Zone 2)

Calhoun and the 62419 zip code are located in Richland County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Calhoun, IL

What EPA Radon Zone is Calhoun in?

Calhoun and the 62419 zip code are in Richland County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Calhoun?

Radon mitigation in Calhoun 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 Calhoun?

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