Durham, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Durham in?

Durham is in Lewis County, EPA Zone 2.

Q: How much does radon mitigation cost in Durham?

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

Lewis County

EPA Zone 2

Located in Lewis County in northeastern Missouri, Durham's radon potential reflects the area's Paleozoic limestone and shale bedrock overlain by glacial till deposits. The rural community's housing in zip code 63438 includes older farmsteads and country homes, many with basements that can trap radon gas. Since local testing data remains limited, property owners should conduct radon testing as Missouri's limestone-rich geology can contribute to elevated radon levels in residential structures.

Durham, MO Radon Mitigation

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

Durham, MO Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Durham Radon Facts

Key details about the radon risk profile for Durham and the 63438 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Lewis County, MO

Zip Code

63438

Predicted Screening Level

2–4 pCi/L (Zone 2)

Durham and the 63438 zip code are located in Lewis County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Durham, MO

What EPA Radon Zone is Durham in?

Durham and the 63438 zip code are in Lewis 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.

How much does radon mitigation cost in Durham?

Radon mitigation in Durham 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 Durham?

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.

Most Active Radon Markets in Missouri

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0