Positioned in Rockingham County within the Boston Metro area, this southeastern New Hampshire community sits on glacial deposits over granite bedrock known for producing elevated radon levels. With testing data limited for zip code 03858, homeowners should prioritize radon testing given New Hampshire's documented high radon potential throughout the region.
Newton, NH Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Newton, NH Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Newton Radon Facts
Key details about the radon risk profile for Newton and the 03858 zip code area.
EPA Radon Zone
Zone 2 — Moderate Risk
County
Rockingham County, NH
Zip Code
03858
Predicted Screening Level
2–4 pCi/L (Zone 2)
Newton and the 03858 zip code are located in Rockingham County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Newton, NH
What EPA Radon Zone is Newton in?
Newton and the 03858 zip code are in Rockingham 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 Newton?
Radon mitigation in Newton 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 Newton?
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 with the most user-submitted radon test data in the state.
