De Soto, IL Radon Levels

Q: What EPA Radon Zone is De Soto in?

De Soto is in Jackson County, EPA Zone 2.

Q: How much does radon mitigation cost in De Soto?

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

Check local De Soto radon levels and find certified testing and mitigation professionals to keep your home safe

De Soto, IL Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Jackson County, IL

Zip Code 62924

Situated in southern Illinois near the Shawnee National Forest region, De Soto in Jackson County lies within the Pennsylvanian-era coal measures and shale deposits of the Illinois Basin. While radon testing data for the 62924 zip code area remains limited, homeowners should still test their properties given the moderate radon potential from underlying coal-bearing formations. Testing is especially recommended for homes with basements or crawl spaces in this historically coal-rich region.

5.50

pCi/L area average

Above EPA Action Level

Jackson County average: 5.50 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for De Soto itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

De Soto, IL Radon Mitigation

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

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Radon Readings Near De Soto, IL

No homeowner tests have been submitted for De Soto yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Murphysboro	6.9 mi	10.00 pCi/L	1
Marion	17.1 mi	5.00 pCi/L	1
Campbell Hill	20.9 mi	1.00 pCi/L	1
Mount Vernon	38.6 mi	4.00 pCi/L	1
Marissa	41.4 mi	4.00 pCi/L	1

Jackson County Radon Profile

EPA mapping assigns Jackson County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 2 cities in Jackson County average 5.50 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Jackson County home regardless of zone or a neighbor's results.

Radon FAQ for De Soto, IL

What EPA Radon Zone is De Soto in?

De Soto and the 62924 zip code are in Jackson 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.

Why are radon readings shown from areas near De Soto?

No homeowner radon tests have been submitted for De Soto yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Jackson County average—are the best available indicator of local conditions until De Soto homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in De Soto?

Radon mitigation in De Soto 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 De Soto?

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.