Waltonville, IL Radon Levels

Q: What EPA Radon Zone is Waltonville in?

Waltonville is in Jefferson County, EPA Zone 2.

Q: How much does radon mitigation cost in Waltonville?

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

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

Waltonville, IL Radon Facts

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

County Jefferson County, IL

Zip Code 62894

Nestled in Jefferson County within Illinois' coal belt region, Waltonville sits atop Pennsylvanian-era coal measures and shale deposits that create generally moderate radon conditions. The community's mix of older farmhouses and newer homes often feature partial basements or full basements typical of southern Illinois construction. Since radon testing data is currently limited for zip code 62894, local homeowners are strongly encouraged to conduct baseline radon tests to understand their individual exposure levels.

4.00

pCi/L area average

Above EPA Action Level

Jefferson County average: 4.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Waltonville 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+

Waltonville, 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 Waltonville, IL

No homeowner tests have been submitted for Waltonville 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
Mount Vernon	10.2 mi	4.00 pCi/L	1
Kell	22.2 mi	5.00 pCi/L	1
Carlyle	33.1 mi	13.00 pCi/L	1
Marion	33.9 mi	5.00 pCi/L	1
Murphysboro	34.5 mi	10.00 pCi/L	1
Campbell Hill	35.4 mi	1.00 pCi/L	1
Marissa	38.7 mi	4.00 pCi/L	1
Mascoutah	44.5 mi	6.50 pCi/L	2

Jefferson County Radon Profile

EPA mapping assigns Jefferson 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 1 city in Jefferson County average 4.00 pCi/L across 1 test — 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 Jefferson County home regardless of zone or a neighbor's results.

Radon FAQ for Waltonville, IL

What EPA Radon Zone is Waltonville in?

Waltonville and the 62894 zip code are in Jefferson 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 Waltonville?

No homeowner radon tests have been submitted for Waltonville yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Jefferson County average—are the best available indicator of local conditions until Waltonville 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 Waltonville?

Radon mitigation in Waltonville 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 Waltonville?

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.