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New Hampshire Radon Information

New Hampshire Radon Program:

Radon Website: Website
Radon Contact: No
Active Radon Program:
Require License for Radon Professionals: No

New Hampshire is the fifth smallest state in terms of size and the ninth least populous in the entire US. The state does not have an active radon program.

The radon levels in New Hampshire are above average. As such, there’s an increased risk for all homeowners, which is why we recommend testing exposure levels at least twice a year.

New Hampshire Radon Mitigation and Testing

Need your home tested for radon? Already know you have high levels and need a radon reduction system installed? Finding qualified Radon professionals can be difficult, but we've put together a list of New Hampshire contractors to help you save time.

New Hampshire Radon Mitigation

We have compiled a list of qualified radon mitigation contractors.
Find Radon Mitigation Contractors here

New Hampshire Radon Testing

Need your home or office tested for Radon? We have compiled a list of qualified radon testing contractors.
Find Radon Testing Contractors here

New Hampshire Radon Levels

Map of New Hampshire Radon Levels

Zone 1 (1): Potential for radon levels above 4 pCi/L according to EPA
Zone 2 (2): Potential for radon levels between 2 pCi/L and 4 pCi/L according to the EPA
Zone 3 (3): Lowest EPA level with expected radon levels at or below 2 pCi/L
Disclaimer: It is strongly recommended that all households, schools and office spaces test radon levels individually. The EPA Radon Zone data is not an indicator of individual test results, but a guideline for strategic planning. Toxic radon levels can be found in all counties, regardless of their zone rating. While we make efforts to keep this information up to date, it is derived from third­party sources which may not be accurate or reflect the most current statistics.

New Hampshire Radon Statistics

New Hampshire has 10 counties and 1 (10%) have been assigned Zone 1 counties by the EPA. Zone 1 counties have the highest potential to have homes test higher than 4 pCi/L. New Hampshire's state radon zone average is 1.9, which is the average of all county zone ratings the EPA has assigned the state, ranking it 30 among all states.

New Hampshire Radon Contractor License Information

Does New Hampshire require contractors to be licensed? No.

What are the licensing requirements? There are no state mandated requirements to become a licensed radon contractor in New Hampshire. Those looking for a radon certification can take qualified third party courses that are offered through the NRPP or AARST.

New Hampshire Radon Real Estate Requirements

Does the state of New Hampshire require radon testing for all real estate transactions? No

However both the state of New Hampshire and the EPA recommend that a home or residence should be tested before a real estate transaction is carried out. Even though New Hampshire does not require radon testing, we certainly recommend you have a test performed before you purchase a home. If you decide to perform a test after and find elevated levels, there is no reason to panic. New Hampshire radon mitigation is not expensive compared to the dangers and a system can be implemented in a relatively short period of time.

Browse The National Radon Directory by City

Acworth
Alstead
Alton
Alton Bay
Amherst
Andover
Antrim
Ashland
Ashuelot
Atkinson
Auburn
Barnstead
Barrington
Bartlett
Bath
Bedford
Belmont
Bennington
Berlin
Bethlehem
Bow
Bradford
Bristol
Brookline
Campton
Canaan
Candia
Canterbury
Center Barnstead
Center Conway
Center Harbor
Center Ossipee
Center Sandwich
Center Strafford
Center Tuftonboro
Charlestown
Chester
Chesterfield
Chichester
Chocorua
Claremont
Colebrook
Concord
Contoocook
Conway
Cornish
Danbury
Danville
Deerfield
Derry
Dover
Dublin
Dunbarton
Durham
East Hampstead
East Kingston
East Wakefield
Effingham
Elkins
Enfield
Epping
Epsom
Errol
Etna
Exeter
Farmington
Fitzwilliam
Francestown
Franconia
Franklin
Freedom
Fremont
Gilford
Gilmanton
Gilmanton Iron Works
Gilsum
Glen
Goffstown
Gorham
Goshen
Grafton
Grantham
Greenfield
Greenland
Greenville
Groveton
Hampstead
Hampton
Hampton Falls
Hancock
Hanover
Harrisville
Haverhill
Hebron
Henniker
Hill
Hillsborough
Hinsdale
Holderness
Hollis
Hooksett
Hudson
Intervale
Jackson
Jaffrey
Jefferson
Keene
Kingston
Laconia
Lancaster
Lebanon
Lee
Lempster
Lincoln
Lisbon
Litchfield
Littleton
Londonderry
Loudon
Lyme
Lyndeborough
Madbury
Madison
Manchester
Marlborough
Marlow
Meredith
Meriden
Merrimack
Milan
Milford
Milton
Milton Mills
Mirror Lake
Monroe
Mont Vernon
Moultonborough
Nashua
Nelson
New Boston
New Durham
New Hampton
New Ipswich
New London
Newbury
Newfields
Newington
Newmarket
Newport
Newton
North Conway
North Hampton
North Haverhill
North Sandwich
North Stratford
North Walpole
North Woodstock
Northwood
Nottingham
Orford
Ossipee
Pelham
Peterborough
Piermont
Pike
Pittsburg
Pittsfield
Plainfield
Plaistow
Plymouth
Portsmouth
Randolph
Raymond
Rindge
Rochester
Rollinsford
Rumney
Rye
Salem
Salisbury
Sanbornton
Sanbornville
Sandown
Seabrook
Silver Lake
Somersworth
South Acworth
South Tamworth
Spofford
Springfield
Stoddard
Strafford
Stratham
Sugar Hill
Sullivan
Sunapee
Suncook
Swanzey
Tamworth
Temple
Thornton
Tilton
Troy
Union
Walpole
Warner
Warren
Washington
Weare
Wentworth
West Chesterfield
West Lebanon
West Nottingham
West Ossipee
Westmoreland
Whitefield
Wilmot
Wilton
Winchester
Windham
Wolfeboro
Wonalancet
Woodsville