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Preston, CT Radon Levels

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


Preston, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County New London County, CT
Zip Code 06365
Avg. User Level 5.00 pCi/L
User Tests 1

Located in New London County in southeastern Connecticut, Preston sits on crystalline bedrock and glacial deposits that can produce elevated radon levels. Local testing shows an average of 5.0 pCi/L, which exceeds the EPA's 4.0 pCi/L action threshold, indicating homeowners in the 06365 area should consider radon mitigation.

5.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Preston, CT Radon Mitigation

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

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Preston, CT Radon Levels

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

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

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

Radon FAQ for Preston, CT

What is the average radon level in Preston, CT?
Based on 1 user-submitted test, the average radon level in Preston 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 Preston in?
Preston and the 06365 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 Preston?
Radon mitigation in Preston 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 Preston?
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