Harrisburg, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Harrisburg in?

Harrisburg is in Saline County, EPA Zone 2.

Q: How much does radon mitigation cost in Harrisburg?

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

Saline County

EPA Zone 2

Located in Saline County within southern Illinois, Harrisburg sits on Pennsylvanian-era coal measures and shale deposits that generally produce moderate radon levels in the region. The city's housing stock spans from early 1900s architecture to modern developments, with many homes featuring full or partial basements typical of Illinois construction practices. Given the absence of current testing data for zip code 62946, homeowners should consider radon testing to assess their individual property conditions.

Harrisburg, IL Radon Mitigation

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

Harrisburg, IL Radon Testing

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

Harrisburg Radon Facts

Key details about the radon risk profile for Harrisburg and the 62946 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Saline County, IL

Zip Code

62946

Predicted Screening Level

2–4 pCi/L (Zone 2)

Harrisburg and the 62946 zip code are located in Saline 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 Harrisburg, IL

What EPA Radon Zone is Harrisburg in?

Harrisburg and the 62946 zip code are in Saline 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 Harrisburg?

Radon mitigation in Harrisburg 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 Harrisburg?

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