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Newtown, CT Radon Levels

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


Newtown, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Fairfield County, CT
Zip Code 06470
Avg. User Level 6.50 pCi/L
User Tests 2

Located in Fairfield County, Newtown shows concerning radon levels averaging 6.5 pCi/L, well above EPA action guidelines. The town's position on Connecticut's glacial geology, combined with many homes featuring full basements typical of New England construction, creates ideal conditions for radon accumulation in zip code 06470.

6.50
pCi/L average
Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Newtown, CT. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Newtown, CT Radon Mitigation

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

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Newtown, CT Radon Levels

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

Radon LevelCityHome AgeFoundation
7 pCi/L Newtown, CT 21-50 Years Full Basement
6 pCi/L Newtown, CT 21-50 Years Full Basement

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

Radon FAQ for Newtown, CT

What is the average radon level in Newtown, CT?
Based on 2 user-submitted tests, the average radon level in Newtown is 6.50 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 Newtown in?
Newtown and the 06470 zip code are in Fairfield 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 Newtown?
Radon mitigation in Newtown 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 Newtown?
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