Union Star, MO Radon Levels

Q: What EPA Radon Zone is Union Star in?

Union Star is in Dekalb County, EPA Zone 2.

Q: How much does radon mitigation cost in Union Star?

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

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

Union Star, MO Radon Facts

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

County Dekalb County, MO

Zip Code 64494

Established in Dekalb County in northwestern Missouri, Union Star sits within prairie soils over limestone bedrock that can contribute to moderate radon potential throughout the region. Current testing submissions for zip code 64494 are limited, making professional radon testing a priority for local homeowners. The community's rural character includes older farmsteads with partial basements alongside newer ranch-style homes, each presenting different foundation characteristics that influence radon entry patterns.

5.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 5.00 pCi/L, based on 1 test from 1 nearby city. No readings have been submitted for Union Star 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+

Union Star, 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 Union Star, MO

No homeowner tests have been submitted for Union Star 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
Kearney	44.3 mi	5.00 pCi/L	1

Dekalb County Radon Profile

The soils and bedrock of Dekalb 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 Dekalb 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 Dekalb County to test, as levels can differ between neighboring homes.

Radon FAQ for Union Star, MO

What EPA Radon Zone is Union Star in?

Union Star and the 64494 zip code are in Dekalb 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 Union Star?

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

Radon mitigation in Union Star 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 Union Star?

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.