Located in Coos County in New Hampshire's North Country, Gorham recorded an average radon level of 8.0 pCi/L, which exceeds the EPA action threshold. The area's granite-based geology and glacial till soils create conditions favorable for radon production and migration into homes. Residents in this 03581 zip code should prioritize radon testing and mitigation, especially in properties with basements.
8.00
pCi/L average
Above EPA Action Level
Based on 1 user-submitted radon test for homes in Gorham, NH. The EPA recommends taking action at or above 4.0 pCi/L.
0
4.0 EPA
10+
Gorham, NH Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
User-submitted radon test readings from homes in the Gorham area.
Radon Level
City
Home Age
Foundation
8 pCi/L
Gorham, NH
0-20 Years
Full Basement
Have a radon test result for Gorham? Submit your reading to help other homeowners.
Radon FAQ for Gorham, NH
What is the average radon level in Gorham, NH?
Based on 1 user-submitted test, the average radon level in Gorham is 8.00 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 Gorham in?
Gorham and the 03581 zip code are in Coos 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 Gorham?
Radon mitigation in Gorham 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 Gorham?
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 New Hampshire
Cities in New Hampshire with the most user-submitted radon test data, ranked by number of submissions.
