Calhoun, MO Radon Levels

Q: What EPA Radon Zone is Calhoun in?

Calhoun is in Henry 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, MO Radon Facts

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

County Henry County, MO

Zip Code 65323

Nestled in Henry County in west-central Missouri, Calhoun lies within a geological region of Pennsylvanian limestone and shale that can contribute to moderate radon levels throughout the area. With limited testing data available for zip code 65323, homeowners should prioritize individual radon testing to understand their specific exposure risk. The community's mix of historic farmhouses and newer rural construction creates varied foundation conditions that influence radon entry patterns.

8.20

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.20 pCi/L, based on 10 tests from 10 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, MO 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, MO

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
Warrensburg	19.9 mi	9.00 pCi/L	1
Warsaw	22.0 mi	5.00 pCi/L	1
Cole Camp	24.7 mi	5.00 pCi/L	1
Sedalia	26.6 mi	6.00 pCi/L	1
Pleasant Hill	38.4 mi	15.00 pCi/L	1
Harrisonville	38.4 mi	20.00 pCi/L	1
Oak Grove	44.3 mi	7.00 pCi/L	1
Climax Springs	44.5 mi	2.00 pCi/L	1

Henry County Radon Profile

Henry 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 Henry 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 Henry County.

Radon FAQ for Calhoun, MO

What EPA Radon Zone is Calhoun in?

Calhoun and the 65323 zip code are in Henry 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 Henry 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.