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Terryville, CT Radon Levels

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


Terryville, CT Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Litchfield County, CT
Zip Code 06786
Avg. User Level 5.00 pCi/L
User Tests 1

Situated in Litchfield County in Connecticut's northwestern hills, Terryville has recorded an average radon level of 5.0 pCi/L, which exceeds the EPA action level of 4.0 pCi/L. The area's complex bedrock geology, including metamorphic rocks and glacial deposits, contributes to elevated radon potential throughout this region. Homeowners should prioritize testing and consider mitigation systems when levels exceed safe thresholds.

5.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Terryville, CT Radon Mitigation

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

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Terryville, CT Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Terryville, CT 21-50 Years Full Basement

Have a radon test result for Terryville? Submit your reading to help other homeowners.

Radon FAQ for Terryville, CT

What is the average radon level in Terryville, CT?
Based on 1 user-submitted test, the average radon level in Terryville 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 Terryville in?
Terryville and the 06786 zip code are in Litchfield County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Terryville?
Radon mitigation in Terryville 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 Terryville?
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.

CityAvg User Radon LevelSubmissions
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