Killingworth, CT Radon Mitigation and Testing

Q: What EPA Radon Zone is Killingworth in?

Killingworth is in Middlesex County, EPA Zone 1.

Q: How much does radon mitigation cost in Killingworth?

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

Middlesex County

EPA Zone 1

This quiet rural community in Middlesex County features wooded landscapes and traditional New England homes dating from colonial times through modern construction. Connecticut's crystalline bedrock and glacial till soils can create variable radon conditions across different property types. Since specific testing data for Killingworth remains limited, homeowners should test their properties regardless of home age or foundation type.

Killingworth, CT Radon Mitigation

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

Killingworth, CT Radon Testing

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

Killingworth Radon Facts

Key details about the radon risk profile for Killingworth and the 06419 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Middlesex County, CT

Zip Code

06419

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Killingworth and the 06419 zip code are located in Middlesex 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 Killingworth, CT

What EPA Radon Zone is Killingworth in?

Killingworth and the 06419 zip code are in Middlesex 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 Killingworth?

Radon mitigation in Killingworth 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 Killingworth?

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