Gorham, IL Radon Levels

Q: What EPA Radon Zone is Gorham in?

Gorham is in Jackson County, EPA Zone 2.

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

No homeowner radon tests have been submitted for Gorham yet, so readings from the closest cities and the Jackson 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 Gorham?

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

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

Gorham, IL Radon Facts

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

County Jackson County, IL

Zip Code 62940

Found in Jackson County in southern Illinois, Gorham sits on Pennsylvanian-era coal measures and shale deposits that typically produce moderate radon levels. With testing data currently unavailable for the 62940 zip code, individual home testing remains important for residents. The area's mixed housing stock, from historic farmhouses to newer rural construction, can show varying radon accumulation patterns.

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 Gorham 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+

Gorham, 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 Gorham, IL

No homeowner tests have been submitted for Gorham 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	6.4 mi	10.00 pCi/L	1
Campbell Hill	14.6 mi	1.00 pCi/L	1
Marion	28.1 mi	5.00 pCi/L	1
Marissa	38.7 mi	4.00 pCi/L	1
Mount Vernon	49.3 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 Gorham, IL

What EPA Radon Zone is Gorham in?

Gorham and the 62940 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 Gorham?

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

Radon mitigation in Gorham 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 Gorham?

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.