Berwick, LA Radon Mitigation and Testing

Q: What EPA Radon Zone is Berwick in?

Berwick is in St Mary Parish County, EPA Zone Unknown.

Q: How much does radon mitigation cost in Berwick?

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

St Mary Parish County

EPA Zone Unknown

Located in St. Mary Parish in south-central Louisiana's bayou country, Berwick sits on Mississippi River delta sediments that generally produce very low radon levels. The community's coastal location and predominantly slab-on-grade construction in ZIP 70342 typically result in minimal radon concerns. However, homeowners should still consider testing, particularly in any homes with enclosed crawl spaces.

Berwick, LA Radon Mitigation

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

Berwick, LA Radon Testing

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

Berwick Radon Facts

Key details about the radon risk profile for Berwick and the 70342 zip code area.

EPA Radon Zone

Unknown

County

St Mary Parish County, LA

Zip Code

70342

Predicted Screening Level

Unknown

Berwick and the 70342 zip code are located in St Mary Parish County, which has an EPA assigned Radon Zone of Unknown. A radon zone of Unknown does not have sufficient data for classification. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Berwick, LA

What EPA Radon Zone is Berwick in?

Berwick and the 70342 zip code are in St Mary Parish County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.

How much does radon mitigation cost in Berwick?

Radon mitigation in Berwick 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 Berwick?

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