Ansonia, CT Radon Mitigation and Testing

Q: What EPA Radon Zone is Ansonia in?

Ansonia is in New Haven County, EPA Zone 1.

Q: How much does radon mitigation cost in Ansonia?

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

New Haven County

EPA Zone 1

Nestled in the Naugatuck Valley within New Haven County, Ansonia sits over crystalline bedrock formations that contribute to Connecticut's elevated radon potential. While specific testing data for zip code 06401 is currently limited, the area's geological setting of metamorphic rocks with uranium-bearing minerals warrants homeowner attention. Professional radon testing remains essential for all residents given the unpredictable nature of radon concentrations in this geologically complex valley setting.

Ansonia, CT Radon Mitigation

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

Ansonia, CT Radon Testing

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

Ansonia Radon Facts

Key details about the radon risk profile for Ansonia and the 06401 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

New Haven County, CT

Zip Code

06401

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Ansonia and the 06401 zip code are located in New Haven 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 Ansonia, CT

What EPA Radon Zone is Ansonia in?

Ansonia and the 06401 zip code are in New Haven 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 Ansonia?

Radon mitigation in Ansonia 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 Ansonia?

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 Connecticut

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

City	Avg User Radon Level	Submissions
Hamden	4.75 pCi/L	4
West Hartford	4.25 pCi/L	4
Greenwich	7.67 pCi/L	3
Norwalk	7.00 pCi/L	1
Stamford	5.00 pCi/L	1
Middletown	4.00 pCi/L	1
Guilford	No submissions	0
Ridgefield	No submissions	0