Welsh, LA Radon Mitigation and Testing

Q: What EPA Radon Zone is Welsh in?

Welsh is in Jefferson Davis Parish County, EPA Zone 3.

Q: How much does radon mitigation cost in Welsh?

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

Jefferson Davis Parish County

EPA Zone 3

Welsh sits in Jefferson Davis Parish within Louisiana's Gulf Coastal Plain, where sedimentary deposits and high water tables generally result in lower radon concentrations. Testing data for this community in zip code 70591 is currently limited, though the region's geology typically produces minimal radon risk. Homeowners should still consider baseline testing, particularly in newer construction with tighter building envelopes.

Welsh, LA Radon Mitigation

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

Welsh, LA Radon Testing

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

Welsh Radon Facts

Key details about the radon risk profile for Welsh and the 70591 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Jefferson Davis Parish County, LA

Zip Code

70591

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Welsh and the 70591 zip code are located in Jefferson Davis Parish County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Welsh, LA

What EPA Radon Zone is Welsh in?

Welsh and the 70591 zip code are in Jefferson Davis Parish County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Welsh?

Radon mitigation in Welsh 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 Welsh?

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 Louisiana

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

City	Avg User Radon Level	Submissions
New Orleans	8.00 pCi/L	1