Clarence, MO Radon Levels

Q: What EPA Radon Zone is Clarence in?

Clarence is in Shelby County, EPA Zone 2.

Q: How much does radon mitigation cost in Clarence?

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

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

Clarence, MO Radon Facts

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

County Shelby County, MO

Zip Code 63437

Located in northern Missouri's Shelby County, Clarence sits atop glacial till deposits and underlying limestone formations that can influence radon production across the region. While testing data for zip code 63437 remains limited, the area's geological setting suggests potential for elevated levels. This rural community's mix of older farmhouses and newer homes may exhibit varying radon characteristics depending on construction methods and foundation types.

5.67

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 5.67 pCi/L, based on 6 tests from 4 nearby cities. No readings have been submitted for Clarence 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+

Clarence, MO Radon Mitigation

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

Need Radon Mitigation or Testing in Clarence?

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Radon Readings Near Clarence, MO

No homeowner tests have been submitted for Clarence 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
Palmyra	38.2 mi	8.00 pCi/L	1
Mexico	43.6 mi	4.00 pCi/L	1
Hallsville	43.6 mi	5.00 pCi/L	2
Hannibal	46.2 mi	6.00 pCi/L	2

Shelby County Radon Profile

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

Radon FAQ for Clarence, MO

What EPA Radon Zone is Clarence in?

Clarence and the 63437 zip code are in Shelby 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 Clarence?

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

Radon mitigation in Clarence 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 Clarence?

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.