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Norfolk, CT Radon Levels

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


Norfolk, CT Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Litchfield County, CT
Zip Code 06058

This historic Litchfield County town in northwestern Connecticut sits within EPA Zone 2, reflecting moderate radon potential from the region's crystalline bedrock. Testing data for zip code 06058 is currently limited, but the area's geological setting and older housing stock warrant homeowner testing. Many properties feature traditional New England basements in homes dating from the 18th and 19th centuries.

Norfolk, CT Radon Mitigation

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

Need Radon Mitigation or Testing in Norfolk?

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Radon FAQ for Norfolk, CT

What EPA Radon Zone is Norfolk in?
Norfolk and the 06058 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 Norfolk?
Radon mitigation in Norfolk 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 Norfolk?
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