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Certified radon testers and mitigators in Missouri

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

6 cities & counties54 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.

Major cities

Kansas City 15Saint Louis 13

Counties in Missouri A–Z

Smaller counties in Missouri

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

Camden County 1

Cass County 1

Clay County 1

Greene County 1

Johnson County 1

Lincoln County 1

Stoddard County 1

Wright County 1

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

Tell us what you need and where. We send your request to up to 3 certified pros near you who offer that service, and they contact you directly.

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