Opdyke, IL Radon Levels

Q: What EPA Radon Zone is Opdyke in?

Opdyke is in Jefferson County, EPA Zone 2.

Q: Why are radon readings shown from areas near Opdyke?

No homeowner radon tests have been submitted for Opdyke yet, so readings from the closest cities and the Jefferson County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Opdyke?

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

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

Opdyke, IL Radon Facts

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

County Jefferson County, IL

Zip Code 62872

Opdyke in Jefferson County has limited radon testing data available for the 62872 zip code area. Southern Illinois' Pennsylvanian-era coal measures and shale deposits create moderate radon conditions, with individual homes varying based on foundation type and local geology. Testing is recommended to assess your specific property's radon 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 Opdyke 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+

Opdyke, 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 Opdyke, IL

No homeowner tests have been submitted for Opdyke 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	7.9 mi	4.00 pCi/L	1
Kell	18.2 mi	5.00 pCi/L	1
Marion	38.9 mi	5.00 pCi/L	1
Carlyle	40.0 mi	13.00 pCi/L	1
Murphysboro	46.4 mi	10.00 pCi/L	1

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 Opdyke, IL

What EPA Radon Zone is Opdyke in?

Opdyke and the 62872 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 Opdyke?

No homeowner radon tests have been submitted for Opdyke 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 Opdyke 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 Opdyke?

Radon mitigation in Opdyke 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 Opdyke?

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.