Salem, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Salem in?

Salem is in Marion County, EPA Zone 2.

Q: How much does radon mitigation cost in Salem?

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

Marion County

EPA Zone 2

Southern Illinois's Salem in Marion County sits in EPA Zone 2 where Pennsylvanian-era coal measures create moderate radon conditions throughout the 62881 area. Testing data remains unavailable, making individual home assessment the only reliable method to determine radon risk. The region's historic downtown homes and varied foundation types can experience different radon accumulation patterns.

Salem, IL Radon Mitigation

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

Salem, IL Radon Testing

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

Salem Radon Facts

Key details about the radon risk profile for Salem and the 62881 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Marion County, IL

Zip Code

62881

Predicted Screening Level

2–4 pCi/L (Zone 2)

Salem and the 62881 zip code are located in Marion 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 Salem, IL

What EPA Radon Zone is Salem in?

Salem and the 62881 zip code are in Marion 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 Salem?

Radon mitigation in Salem 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 Salem?

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