Colchester, CT Radon Levels

Q: What is the average radon level in Colchester, CT?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Colchester in?

Colchester is in New London County, EPA Zone 1.

Q: How much does radon mitigation cost in Colchester?

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

Check local Colchester radon levels and find certified testing and mitigation professionals to keep your home safe

Colchester, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County New London County, CT

Zip Code 06415

Avg. User Level 5.00 pCi/L

User Tests 1

Located in New London County in southeastern Connecticut, Colchester sits on glacial deposits and crystalline bedrock that place it within EPA Zone 1. Recent testing in zip code 06415 shows an average radon level of 5.0 pCi/L, which exceeds the EPA's 4.0 pCi/L action level. This reading suggests homeowners should consider radon mitigation systems, particularly in basement areas where radon gas naturally accumulates in Connecticut's colonial and post-war housing stock.

5.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Colchester, CT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Colchester, CT Radon Mitigation

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Colchester, CT Radon Levels

User-submitted radon test readings from homes in the Colchester area.

Radon Level	City	Home Age	Foundation
5 pCi/L	Colchester, CT	0-20 Years	Full Basement

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Radon FAQ for Colchester, CT

What is the average radon level in Colchester, CT?

Based on 1 user-submitted test, the average radon level in Colchester is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Colchester in?

Colchester and the 06415 zip code are in New London 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 Colchester?

Radon mitigation in Colchester 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 Colchester?

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 in Connecticut with the most user-submitted radon test data, ranked by number of submissions.

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

Colchester, CT Radon Levels

Check local Colchester radon levels and find certified testing and mitigation professionals to keep your home safe

Colchester, CT Radon Facts

Colchester, CT Radon Mitigation

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Colchester, CT Radon Levels

Radon FAQ for Colchester, CT

Most Active Radon Markets in Connecticut

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