Hampton radon mitigation — local context
If you own a home in Hampton, test before you assume. Hampton's bedrock is the Rye formation — gneiss, schist and quartzite cut by granite and pegmatite — which the USGS traces "into Portsmouth, Rye, North Hampton, and Hampton, NH." That granite and pegmatite release radon as uranium decays. Despite what most pages claim, Hampton sits in EPA Radon Zone 2 (moderate, predicted 2–4 pCi/L), not the highest zone — only Carroll County is Zone 1 (EPA Map of Radon Zones). Still, the data warrants a test: the CDC reports Rockingham County, Hampton's county, among the three NH counties with the highest radon, with 37% of homes tested over EPA's 4.0 pCi/L action level, and a statewide indoor average of 5.9 pCi/L versus 1.3 nationally. We charge $50 for a radon test, credited toward the job if you proceed. Mitigation runs $900–$6,000 (most jobs $1,950–$2,250). See our radon mitigation services. Certified RMS-113966, licensed and insured.
What a recent customer said
603 Basement Solutions was a great company to work with for radon mitigation for a home on a slab foundation… They did such a neat and tidy job, drilling the slab, installing the system very efficiently tucked behind a door, and filling a crack in the slab… Most importantly, our radon level dropped within 24 hours from 11.3 pCi/L to 0.48 pCi/L!
Frequently asked questions
Is radon a problem in Hampton, NH?
It's worth testing. Hampton sits in EPA Radon Zone 2 (moderate, predicted 2–4 pCi/L), not the highest zone — only Carroll County is Zone 1 in NH (EPA Map of Radon Zones). But the CDC names Rockingham County, Hampton's county, among the three NH counties with the highest radon: 37% of homes tested exceeded EPA's 4.0 pCi/L action level. New Hampshire's indoor average is 5.9 pCi/L versus 1.3 nationally, driven by the state's granite bedrock. The only way to know your home's level is to test.
Why does Hampton have radon-producing bedrock?
Hampton sits on the Rye formation — gneiss, schist and quartzite cut by the Breakfast Hill Granite and two-mica granite and pegmatite. The USGS traces this unit south "into Portsmouth, Rye, North Hampton, and Hampton, NH." The granite and pegmatite release radon gas as the uranium in them decays, which is why testing your specific home matters even in a moderate EPA zone.
How much does radon mitigation cost in Hampton, and is the test free?
Radon mitigation runs $900–$6,000, with most jobs landing around $1,950–$2,250. The radon test is $50 — not free — but it's credited toward the job if you move forward. We also install sub-membrane depressurization systems for dirt and fieldstone crawl spaces, common in older New England homes. We're certified RMS-113966, licensed and insured.