EPA Zone Data 2026
NC Radon Levels
View EPA radon zone classifications for every county in NC. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.
8
Zone 1
High Risk
High Risk
31
Zone 2
Moderate
Moderate
61
Zone 3
Low Risk
Low Risk
Alamance
Zone 3
Alexander
Zone 2
Alleghany
Zone 1
Anson
Zone 3
Ashe
Zone 2
Avery
Zone 2
Beaufort
Zone 3
Bertie
Zone 3
Bladen
Zone 3
Brunswick
Zone 3
Buncombe
Zone 1
Burke
Zone 2
Cabarrus
Zone 3
Caldwell
Zone 2
Camden
Zone 3
Carteret
Zone 3
Caswell
Zone 2
Catawba
Zone 2
Chatham
Zone 3
Cherokee
Zone 1
Chowan
Zone 3
Clay
Zone 2
Cleveland
Zone 2
Columbus
Zone 3
Craven
Zone 3
Cumberland
Zone 3
Currituck
Zone 3
Dare
Zone 3
Davidson
Zone 3
Davie
Zone 3
Duplin
Zone 3
Durham
Zone 3
Edgecombe
Zone 3
Forsyth
Zone 2
Franklin
Zone 2
Gaston
Zone 2
Gates
Zone 3
Graham
Zone 2
Granville
Zone 3
Greene
Zone 3
Guilford
Zone 3
Halifax
Zone 3
Harnett
Zone 3
Haywood
Zone 2
Henderson
Zone 1
Hertford
Zone 3
Hoke
Zone 3
Hyde
Zone 3
Iredell
Zone 2
Jackson
Zone 2
Johnston
Zone 3
Jones
Zone 3
Lee
Zone 3
Lenoir
Zone 3
Lincoln
Zone 2
Macon
Zone 2
Madison
Zone 2
Martin
Zone 3
McDowell
Zone 2
Mecklenburg
Zone 3
Mitchell
Zone 1
Montgomery
Zone 3
Moore
Zone 3
Nash
Zone 3
New Hanover
Zone 3
Northampton
Zone 3
Onslow
Zone 3
Orange
Zone 3
Pamlico
Zone 3
Pasquotank
Zone 3
Pender
Zone 3
Perquimans
Zone 3
Person
Zone 3
Pitt
Zone 3
Polk
Zone 2
Randolph
Zone 3
Richmond
Zone 3
Robeson
Zone 3
Rockingham
Zone 1
Rowan
Zone 3
Rutherford
Zone 2
Sampson
Zone 3
Scotland
Zone 3
Stanly
Zone 3
Stokes
Zone 2
Surry
Zone 2
Swain
Zone 2
Transylvania
Zone 1
Tyrrell
Zone 3
Union
Zone 3
Vance
Zone 2
Wake
Zone 2
Warren
Zone 2
Washington
Zone 3
Watauga
Zone 1
Wayne
Zone 3
Wilkes
Zone 2
Wilson
Zone 3
Yadkin
Zone 2
Yancey
Zone 2
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