Calhoun, IL Radon Levels

Q: What EPA Radon Zone is Calhoun in?

Calhoun is in Richland County, EPA Zone 2.

Q: How much does radon mitigation cost in Calhoun?

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

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

Calhoun, IL Radon Facts

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

County Richland County, IL

Zip Code 62419

Situated in southeastern Illinois within Richland County, Calhoun lies in a region where Pennsylvanian-era coal measures and underlying limestone create moderate radon potential. Although comprehensive testing data for this rural community remains sparse, the geological conditions warrant individual home testing. Many properties in zip code 62419 feature older farmhouse construction with partial basements that could concentrate radon if present.

7.78

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.78 pCi/L, based on 9 tests from 5 nearby cities. No readings have been submitted for Calhoun yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Calhoun, 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 Calhoun, IL

No homeowner tests have been submitted for Calhoun 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
Bridgeport	13.8 mi	5.00 pCi/L	1
Mount Carmel	19.1 mi	5.00 pCi/L	2
Palestine	32.9 mi	18.50 pCi/L	2
Effingham	45.0 mi	4.33 pCi/L	3
Kell	49.8 mi	5.00 pCi/L	1

Richland County Radon Profile

Richland County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. User-submitted readings are still sparse within Richland County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Richland County.

Radon FAQ for Calhoun, IL

What EPA Radon Zone is Calhoun in?

Calhoun and the 62419 zip code are in Richland 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 Calhoun?

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

Radon mitigation in Calhoun 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 Calhoun?

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.