Alexandria, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Alexandria in?

Alexandria is in Clark County, EPA Zone 2.

Q: How much does radon mitigation cost in Alexandria?

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

Clark County

EPA Zone 2

Alexandria in Clark County lies in northeast Missouri, where Pennsylvanian limestone and shale bedrock contribute to the area's EPA Zone 2 radon classification. This rural community's older farmhouses and traditional basements can experience varying radon levels depending on soil conditions and home construction. With testing data currently unavailable for zip code 63430, homeowners should conduct radon testing to establish their property's baseline levels.

Alexandria, MO Radon Mitigation

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

Alexandria, MO Radon Testing

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

Alexandria Radon Facts

Key details about the radon risk profile for Alexandria and the 63430 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Clark County, MO

Zip Code

63430

Predicted Screening Level

2–4 pCi/L (Zone 2)

Alexandria and the 63430 zip code are located in Clark 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 Alexandria, MO

What EPA Radon Zone is Alexandria in?

Alexandria and the 63430 zip code are in Clark 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 Alexandria?

Radon mitigation in Alexandria 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 Alexandria?

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