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Certified radon testers and mitigators in Wisconsin

74 certified radon testers and mitigation contractors in Wisconsin, from the state's official list or the national NRPP directory.

9 cities & counties74 certified pros

Pros in this state come from the NRPP national certification directory (checked Oct 28, 2026). Get Radon Quotes is independent and not affiliated with NRPP. Some states also require a state license, so confirm with your state radon office before you hire. Your state radon office.

Counties in Wisconsin A–Z

Smaller counties in Wisconsin

Counties with only a few listings so far, grouped by county.

Brown County 2

Buffalo County 1

Chippewa County 2

Columbia County 2

Dane County 2

Dodge County 2

Douglas County 1

Eau Claire County 1

Fond du Lac County 1

Iowa County 1

Kenosha County 1

Lafayette County 1

Marathon County 2

Oneida County 1

Other 1

Outagamie County 2

Ozaukee County 1

Pierce County 1

Polk County 1

Price County 1

Rock County 1

Shawano County 1

Sheboygan County 1

Taylor County 1

Vernon County 1

Waupaca County 1

Get free quotes from up to 3 certified radon pros near Wisconsin

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Prefer to choose yourself? Every certified pro is listed above with their phone number.