Directory
Find a Radon Contractor
Browse certified radon testing and mitigation professionals by state. Select your state to see local listings with phone numbers, websites, and ratings.
T
Before you call anyoneAlways verify that a contractor is certified by the NRPP (National Radon Proficiency Program) or NRSB (National Radon Safety Board). Those are the two EPA-recognized programs. Get at least two quotes, and ask for a post-installation test to confirm the system is working. Full vetting guide →
Alabama
13 Zone 1 counties
Alaska
Arizona
Arkansas
California
2 Zone 1 counties
Colorado
53 Zone 1 counties
Connecticut
4 Zone 1 counties
Delaware
Florida
Georgia
4 Zone 1 counties
Hawaii
Idaho
19 Zone 1 counties
Illinois
56 Zone 1 counties
Indiana
57 Zone 1 counties
Iowa
99 Zone 1 counties
Kansas
65 Zone 1 counties
Kentucky
30 Zone 1 counties
Louisiana
Maine
12 Zone 1 counties
Maryland
8 Zone 1 counties
Massachusetts
3 Zone 1 counties
Michigan
9 Zone 1 counties
Minnesota
68 Zone 1 counties
Mississippi
Missouri
11 Zone 1 counties
Montana
50 Zone 1 counties
Nebraska
53 Zone 1 counties
Nevada
9 Zone 1 counties
New Hampshire
1 Zone 1 county
New Jersey
7 Zone 1 counties
New Mexico
7 Zone 1 counties
New York
34 Zone 1 counties
North Carolina
8 Zone 1 counties
North Dakota
53 Zone 1 counties
Ohio
53 Zone 1 counties
Oklahoma
Oregon
Pennsylvania
49 Zone 1 counties
Rhode Island
2 Zone 1 counties
South Carolina
1 Zone 1 county
South Dakota
48 Zone 1 counties
Tennessee
39 Zone 1 counties
Texas
Utah
7 Zone 1 counties
Vermont
Virginia
64 Zone 1 counties
Washington
7 Zone 1 counties
West Virginia
20 Zone 1 counties
Wisconsin
28 Zone 1 counties
Wyoming
21 Zone 1 counties
Can't find what you need? Search the EPA's national contractor directory →