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Maryland Radon Information

Maryland Radon Program:

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

Maryland is the smallest state in terms of size and yet it is one of most populous in the entire US. The state does not have an active radon program.

The radon levels in Maryland are above average. Some Maryland homes have been found to have radon levels higher than 200 pCi/L. These levels are 50 times higher than the action guidelines set by the US EPA. If you were to spend your lifetime in a house with radon levels of just 10 pCi/l - a fraction of the levels above - you have a lung cancer risk similar to smoking nearly a pack of cigarettes a day. As such, there’s an increased risk for all homeowners, which is why we recommend testing exposure levels at least twice a year.

Maryland 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 Maryland contractors to help you save time.

Maryland Radon Mitigation

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

Maryland 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

Maryland Radon Levels

Map of Maryland 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.

Maryland Radon Statistics

Maryland has 20 counties and 8 (40%) 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. Maryland'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 29 among all states.

Maryland Radon Contractor License Information

Does Maryland require contractors to be licensed? No.

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

Maryland Radon Real Estate Requirements

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

However both the state of Maryland and the EPA recommend that a home or residence should be tested before a real estate transaction is carried out. Even though Maryland 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. Maryland 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

Abell
Aberdeen
Aberdeen Proving Ground
Abingdon
Accident
Accokeek
Adamstown
Andrews Air Force Base
Annapolis
Annapolis Junction
Aquasco
Arnold
Ashton
Avenue
Baldwin
Baltimore
Barclay
Barnesville
Barton
Beallsville
Bel Air
Bel Alton
Belcamp
Beltsville
Berlin
Bethesda
Betterton
Big Pool
Bishopville
Bittinger
Bivalve
Bladensburg
Bloomington
Boonsboro
Bowie
Boyds
Bozman
Brandywine
Brentwood
Brinklow
Brookeville
Brooklyn
Broomes Island
Brunswick
Bryans Road
Bryantown
Burkittsville
Burtonsville
Bushwood
Cabin John
California
Callaway
Cambridge
Capitol Heights
Cascade
Catonsville
Centreville
Chaptico
Charlotte Hall
Cheltenham
Chesapeake Beach
Chesapeake City
Chester
Chestertown
Chevy Chase
Church Creek
Church Hill
Churchton
Churchville
Clarksburg
Clarksville
Clear Spring
Clements
Clinton
Cockeysville
College Park
Colora
Coltons Point
Columbia
Conowingo
Cooksville
Cordova
Crapo
Crisfield
Crocheron
Crofton
Crownsville
Cumberland
Curtis Bay
Damascus
Dameron
Darlington
Davidsonville
Dayton
Deal Island
Deale
Delmar
Denton
Derwood
Dickerson
District Heights
Drayden
Dundalk
Dunkirk
Earleville
East New Market
Easton
Eden
Edgewater
Edgewood
Elkridge
Elkton
Ellicott City
Emmitsburg
Essex
Ewell
Fairplay
Fallston
Faulkner
Federalsburg
Finksburg
Fishing Creek
Flintstone
Forest Hill
Fork
Fort George G Meade
Fort Washington
Frederick
Freeland
Friendship
Friendsville
Frostburg
Fruitland
Fulton
Gaithersburg
Galena
Gambrills
Germantown
Girdletree
Glen Arm
Glen Burnie
Glen Echo
Glenelg
Glenn Dale
Glenwood
Goldsboro
Grantsville
Grasonville
Great Mills
Greenbelt
Greensboro
Gunpowder
Gwynn Oak
Hagerstown
Halethorpe
Hampstead
Hancock
Hanover
Harmans
Harwood
Havre De Grace
Hebron
Henderson
Highland
Hollywood
Hughesville
Hunt Valley
Huntingtown
Hurlock
Hyattsville
Hydes
Ijamsville
Indian Head
Ingleside
Issue
Jarrettsville
Jefferson
Jessup
Joppa
Keedysville
Kennedyville
Kensington
Keymar
Kingsville
Kitzmiller
Knoxville
La Plata
Lanham
Laurel
Leonardtown
Lexington Park
Linkwood
Linthicum Heights
Little Orleans
Lonaconing
Lothian
Loveville
Luke
Lusby
Lutherville Timonium
Madison
Manchester
Marbury
Mardela Springs
Marion Station
Marriottsville
Marydel
Massey
Maugansville
Mc Henry
Mcdaniel
Mechanicsville
Middle River
Middletown
Millersville
Millington
Monkton
Monrovia
Montgomery Village
Mount Airy
Mount Rainier
Mount Savage
Myersville
Nanjemoy
Nanticoke
New Market
New Windsor
Newark
Newburg
North Beach
North East
Nottingham
Oakland
Ocean City
Odenton
Oldtown
Olney
Owings
Owings Mills
Oxford
Oxon Hill
Park Hall
Parkton
Parkville
Parsonsburg
Pasadena
Patuxent River
Perry Hall
Perryville
Phoenix
Pikesville
Piney Point
Pittsville
Pocomoke City
Point Of Rocks
Pomfret
Poolesville
Port Deposit
Port Republic
Port Tobacco
Potomac
Preston
Prince Frederick
Princess Anne
Pylesville
Quantico
Queen Anne
Queenstown
Randallstown
Rawlings
Reisterstown
Rhodesdale
Ridge
Ridgely
Rising Sun
Riva
Riverdale
Rock Hall
Rockville
Rocky Ridge
Rohrersville
Rosedale
Royal Oak
Sabillasville
Saint Inigoes
Saint Leonard
Saint Michaels
Salisbury
Sandy Spring
Savage
Scotland
Severn
Severna Park
Shady Side
Sharpsburg
Sherwood
Showell
Silver Spring
Smithsburg
Snow Hill
Solomons
Sparks Glencoe
Sparrows Point
Spencerville
Stevensville
Still Pond
Stockton
Street
Sudlersville
Suitland
Sunderland
Swanton
Sykesville
Takoma Park
Tall Timbers
Taneytown
Temple Hills
Thurmont
Tilghman
Toddville
Towson
Tracys Landing
Trappe
Tuscarora
Tyaskin
Union Bridge
Upper Falls
Upper Marlboro
Upperco
Valley Lee
Vienna
Waldorf
Walkersville
Warwick
Welcome
West Friendship
West River
Westernport
Westminster
Westover
Whaleyville
White Hall
White Marsh
White Plains
Whiteford
Willards
Williamsport
Windsor Mill
Wingate
Wittman
Woodbine
Woodsboro
Woodstock
Woolford
Worton
Wye Mills