Seymour, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Seymour in?

Seymour is in Webster County, EPA Zone 2.

Q: How much does radon mitigation cost in Seymour?

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

Webster County

EPA Zone 2

Positioned in Webster County as part of the Springfield Metro area, this Ozark community sits atop Missouri's characteristic limestone and dolomite formations. The area's housing stock features a mix of older homes with basements and newer construction, many built over the region's karst geology. Testing data for residents in zip code 65746 remains limited, making individual home testing essential for determining radon levels in this geologically complex region.

Seymour, MO Radon Mitigation

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

Seymour, MO Radon Testing

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

Seymour Radon Facts

Key details about the radon risk profile for Seymour and the 65746 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Webster County, MO

Zip Code

65746

Predicted Screening Level

2–4 pCi/L (Zone 2)

Seymour and the 65746 zip code are located in Webster 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 Seymour, MO

What EPA Radon Zone is Seymour in?

Seymour and the 65746 zip code are in Webster 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 Seymour?

Radon mitigation in Seymour 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 Seymour?

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