Mason, IL Radon Mitigation and Testing

Q: What EPA Radon Zone is Mason in?

Mason is in Effingham County, EPA Zone 2.

Q: How much does radon mitigation cost in Mason?

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

Effingham County

EPA Zone 2

Rural Effingham County in south-central Illinois sits atop Pennsylvanian-era sedimentary rocks that typically produce moderate radon levels across the region's agricultural landscape. Although specific testing data for zip code 62443 is not yet available, the area's geological foundation of coal-bearing shale and limestone suggests radon testing should be a priority. Homeowners in this farming community should conduct professional testing, especially in properties with basements or other below-grade living spaces.

Mason, IL Radon Mitigation

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

Mason, IL Radon Testing

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

Mason Radon Facts

Key details about the radon risk profile for Mason and the 62443 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Effingham County, IL

Zip Code

62443

Predicted Screening Level

2–4 pCi/L (Zone 2)

Mason and the 62443 zip code are located in Effingham 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 Mason, IL

What EPA Radon Zone is Mason in?

Mason and the 62443 zip code are in Effingham 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 Mason?

Radon mitigation in Mason 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 Mason?

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