Madison, CT Radon Mitigation and Testing

Q: What EPA Radon Zone is Madison in?

Madison is in New Haven County, EPA Zone 1.

Q: How much does radon mitigation cost in Madison?

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

Situated in New Haven County, Madison lies along Connecticut's coastal region where glacial deposits over crystalline bedrock create variable radon conditions throughout residential neighborhoods. While specific radon testing data for zip code 06443 is currently limited, the geological setting suggests homeowners should proactively test their properties. Connecticut's mix of older colonial homes and newer construction both require radon monitoring to ensure safe indoor air quality.

Madison, CT Radon Mitigation

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

Madison, CT Radon Testing

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

Madison Radon Facts

Key details about the radon risk profile for Madison and the 06443 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

New Haven County, CT

Zip Code

06443

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Madison and the 06443 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 Madison, CT

What EPA Radon Zone is Madison in?

Madison and the 06443 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 Madison?

Radon mitigation in Madison 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 Madison?

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