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Unionville, MO Radon Levels

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


Unionville, MO Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Putnam County, MO
Zip Code 63565

Located in rural Putnam County in north-central Missouri, Unionville currently has sparse radon testing data for residents in the 63565 area. Missouri's diverse geology includes glacial till deposits and limestone formations that can produce variable radon levels across different regions. Homeowners should prioritize professional radon testing, as the state's geological complexity means radon concentrations can differ substantially even within small geographic areas.

Unionville, MO Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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EPA Radon Zones Near Unionville, MO

No user-submitted radon readings are available for Unionville or its immediate area yet. The table below shows the EPA radon zone — a county-level prediction of radon risk — for nearby communities. Radon still varies from home to home, so testing is the only way to confirm your level.

CityDistanceCountyEPA Radon Zone
Coatsville 19.6 mi Schuyler County Zone 2
Novinger 20.7 mi Adair County Zone 2
Glenwood 21.5 mi Schuyler County Zone 2
Milan 21.8 mi Sullivan County Zone 2
Harris 22.2 mi Sullivan County Zone 2
Queen City 23.0 mi Schuyler County Zone 2
Lancaster 24.8 mi Schuyler County Zone 2
Greentop 24.9 mi Adair County Zone 2

Putnam County Radon Profile

The soils and bedrock of Putnam County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Putnam County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Putnam County to test, as levels can differ between neighboring homes.

Radon FAQ for Unionville, MO

What EPA Radon Zone is Unionville in?
Unionville and the 63565 zip code are in Putnam 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.
What EPA radon zones surround Unionville, MO?
Unionville sits in Putnam County, which the EPA classifies as Radon Zone 2. Among the nearby communities listed above, 8 in Zone 2 (moderate risk, 2-4 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.
How much does radon mitigation cost in Unionville?
Radon mitigation in Unionville 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 Unionville?
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.