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Orange, CT Radon Levels

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


Orange, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County New Haven County, CT
Zip Code 06477
Avg. User Level 8.50 pCi/L
User Tests 4

This New Haven County community has shown significant radon concerns, with an average reading of 8.5 pCi/L from recent testing data in the 06477 zip code area—more than double the EPA action level. Connecticut's glacial geology and the prevalence of full basement foundations in older New England homes create conditions where radon can accumulate to dangerous levels. Given that readings have ranged from 4.0 to 20.0 pCi/L locally, all Orange residents should prioritize professional radon testing and consider mitigation if levels exceed EPA guidelines.

8.50
pCi/L average
Above EPA Action Level

Based on 4 user-submitted radon tests for homes in Orange, CT. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Orange, CT Radon Mitigation

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

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Orange, CT Radon Levels

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

Radon LevelCityHome AgeFoundation
6 pCi/L Orange, CT 0-20 Years Full Basement
4 pCi/L Orange, CT 21-50 Years
20 pCi/L Orange, CT 0-20 Years Full Basement

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

Radon FAQ for Orange, CT

What is the average radon level in Orange, CT?
Based on 4 user-submitted tests, the average radon level in Orange is 8.50 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 Orange in?
Orange and the 06477 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 Orange?
Radon mitigation in Orange 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 Orange?
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