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Waterbury, CT Radon Levels

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


Waterbury, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County New Haven County, CT
Zip Code 06702
Avg. User Level 4.50 pCi/L
User Tests 2

Situated in New Haven County in Connecticut's Naugatuck Valley, Waterbury shows an average radon level of 4.5 pCi/L, slightly exceeding the EPA action threshold based on limited testing data. The city's location on glacial till deposits over crystalline bedrock creates geological conditions that can trap and concentrate radon gas in residential basements. Homeowners across zip codes 06702-06710 should conduct comprehensive radon testing, as individual readings can vary significantly even within the same neighborhood.

4.50
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Waterbury, CT Radon Mitigation

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

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Waterbury, CT Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Waterbury, CT 21-50 Years Full Basement
4 pCi/L Waterbury, CT 51-99 Years Full Basement

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

Radon FAQ for Waterbury, CT

What is the average radon level in Waterbury, CT?
Based on 2 user-submitted tests, the average radon level in Waterbury is 4.50 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 Waterbury in?
Waterbury and the 06702 zip code are in New Haven 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 Waterbury?
Radon mitigation in Waterbury 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 Waterbury?
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