Smithville, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Smithville in?

Smithville is in Clay County, EPA Zone 1.

Q: How much does radon mitigation cost in Smithville?

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

Clay County

EPA Zone 1

Found in Clay County within the Kansas City Metro, Smithville sits on Missouri River valley deposits over limestone bedrock formations that can contribute to variable radon levels across the area. Limited testing data for zip code 64089 emphasizes the importance of individual home radon testing. The community's suburban development pattern, featuring many homes with full basements typical of Kansas City area construction, creates the below-grade spaces where radon can accumulate effectively.

Smithville, MO Radon Mitigation

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

Smithville, MO Radon Testing

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

Smithville Radon Facts

Key details about the radon risk profile for Smithville and the 64089 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Clay County, MO

Zip Code

64089

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Smithville and the 64089 zip code are located in Clay County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Smithville, MO

What EPA Radon Zone is Smithville in?

Smithville and the 64089 zip code are in Clay County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Smithville?

Radon mitigation in Smithville 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 Smithville?

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