Freeburg, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Freeburg in?

Freeburg is in St Clair County, EPA Zone 2.

Q: How much does radon mitigation cost in Freeburg?

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

St Clair County

EPA Zone 2

Positioned in St. Clair County on the Illinois side of the St. Louis Metro area, Freeburg currently has limited radon testing data available. Mississippi River floodplain deposits and underlying Mississippian limestone create moderate radon potential, though individual homes near bluffs can see significantly elevated readings. Given the area's geological characteristics, homeowners in zip code 62243 should prioritize radon testing regardless of home age.

Freeburg, IL Radon Mitigation

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

Freeburg, IL Radon Testing

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

Freeburg Radon Facts

Key details about the radon risk profile for Freeburg and the 62243 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

St Clair County, IL

Zip Code

62243

Predicted Screening Level

2–4 pCi/L (Zone 2)

Freeburg and the 62243 zip code are located in St Clair 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 Freeburg, IL

What EPA Radon Zone is Freeburg in?

Freeburg and the 62243 zip code are in St Clair 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 Freeburg?

Radon mitigation in Freeburg 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 Freeburg?

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