Groton, CT Radon Levels

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

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Groton in?

Groton is in New London County, EPA Zone 1.

Q: How much does radon mitigation cost in Groton?

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

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

Groton, CT Radon Facts

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

County New London County, CT

Zip Code 06340

Avg. User Level 4.00 pCi/L

User Tests 1

Groton sits in New London County along Connecticut's southeastern coast, where the region's varied bedrock geology can produce moderate radon levels in some areas. Testing data shows an average radon level of 4.0 pCi/L, which meets the EPA action threshold and suggests homeowners should evaluate mitigation options. The community's diverse housing stock in zip codes 06334 and 06340 ranges from historic colonial structures to modern developments, with foundation types that can influence individual radon accumulation patterns.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Groton, CT Radon Mitigation

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Groton, CT Radon Levels

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

Radon Level	City	Home Age	Foundation
4 pCi/L	Groton, CT	21-50 Years	Partial Basement

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Radon FAQ for Groton, CT

What is the average radon level in Groton, CT?

Based on 1 user-submitted test, the average radon level in Groton is 4.00 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 Groton in?

Groton and the 06340 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 Groton?

Radon mitigation in Groton 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 Groton?

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

Groton, CT Radon Levels

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

Groton, CT Radon Facts

Groton, CT Radon Mitigation

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Groton, CT Radon Levels

Radon FAQ for Groton, CT

Most Active Radon Markets in Connecticut

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