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Greenville, NH Radon Levels

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


Greenville, NH Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Hillsborough County, NH
Zip Code 03048

Nestled in southern New Hampshire's Hillsborough County within the Manchester Metro area, Greenville sits on granite bedrock covered by glacial till deposits that can produce elevated radon levels. The town's zip code 03048 features primarily single-family homes built from the mid-20th century onward, most with full basements carved into the rocky terrain. With limited radon testing data available, homeowners should prioritize testing given New Hampshire's granite geology and high radon potential.

Greenville, NH Radon Mitigation

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

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Radon FAQ for Greenville, NH

What EPA Radon Zone is Greenville in?
Greenville and the 03048 zip code are in Hillsborough 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 Greenville?
Radon mitigation in Greenville 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 Greenville?
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.

CityAvg User Radon LevelSubmissions
Tamworth 12.67 pCi/L 6
Freedom 10.75 pCi/L 4