Rochester, NH Radon Mitigation and Testing

Q: What EPA Radon Zone is Rochester in?

Rochester is in Strafford County, EPA Zone 2.

Q: How much does radon mitigation cost in Rochester?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Strafford County

EPA Zone 2

Positioned in Strafford County within New Hampshire's granite-rich terrain, Rochester demonstrates elevated radon concerns with an average level of 10.0 pCi/L that substantially exceeds EPA recommendations. The community's location near the Boston Metro, served by zip codes 03839, 03867, and 03868, sits atop granite bedrock known for producing high radon levels throughout New England. Homeowners should prioritize professional radon testing and mitigation, particularly in properties with basements or below-grade living spaces.

Rochester, NH Radon Mitigation

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

Rochester, NH Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Rochester, New Hampshire Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
10 pCi/L	Rochester, NH	0-20 Years	Full Basement	Oct 2016

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

Rochester Radon Facts

Key details about the radon risk profile for Rochester and the 03839 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Strafford County, NH

Zip Code

03839

Predicted Screening Level

2–4 pCi/L (Zone 2)

Rochester and the 03839 zip code are located in Strafford 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 Rochester, NH

What EPA Radon Zone is Rochester in?

Rochester and the 03839 zip code are in Strafford 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 Rochester?

Radon mitigation in Rochester 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 Rochester?

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.

City	Avg User Radon Level	Submissions
Tamworth	12.67 pCi/L	6
Freedom	10.75 pCi/L	4