Stewartsville, MO Radon Levels

Q: What EPA Radon Zone is Stewartsville in?

Stewartsville is in Dekalb County, EPA Zone 2.

Q: How much does radon mitigation cost in Stewartsville?

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

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

Stewartsville, MO Radon Facts

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

County Dekalb County, MO

Zip Code 64490

This small community in northwestern Missouri's Dekalb County lies within the Kansas City Metro area, where Pennsylvanian limestone and shale create moderate radon potential. Testing data for zip code 64490 is currently limited, making professional radon assessment important for residents. Missouri's prairie region can produce variable radon levels, and professional testing is recommended for all homes regardless of age or foundation type.

5.86

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 5.86 pCi/L, based on 7 tests from 6 nearby cities. No readings have been submitted for Stewartsville 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+

Stewartsville, 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 Stewartsville, MO

No homeowner tests have been submitted for Stewartsville 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	31.1 mi	5.00 pCi/L	1
Liberty	38.5 mi	6.50 pCi/L	2
Richmond	45.9 mi	5.00 pCi/L	1
Kansas City	47.9 mi	7.00 pCi/L	1
Independence	48.8 mi	5.00 pCi/L	1
Buckner	49.1 mi	6.00 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 Stewartsville, MO

What EPA Radon Zone is Stewartsville in?

Stewartsville and the 64490 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 Stewartsville?

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

Radon mitigation in Stewartsville 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 Stewartsville?

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.