Find Radon Testers in Wisconsin
Certified radon testing and mitigation professionals across Wisconsin. Browse 20+ listed providers below.
Radon Risk Level
EPA data for this state
High radon state; granite and glacial soils contribute.
Browse by City in Wisconsin
Delafield
5 providers
New Berlin
4 providers
Brookfield
4 providers
New Richmond
4 providers
Neenah
3 providers
Madison
3 providers
Elm Grove
3 providers
Chippewa Falls
2 providers
Green Bay
2 providers
Waukesha
2 providers
Holmen
2 providers
Appleton
2 providers
Milwaukee
2 providers
Mount Pleasant
2 providers
Park Falls
2 providers
Pewaukee
2 providers
Watertown
2 providers
East Troy
1 provider
Oconomowoc
1 provider
Mc Farland
1 provider
Wilson
1 provider
River Falls
1 provider
Poynette
1 provider
Sussex
1 provider
La Crosse
1 provider
Minocqua
1 provider
Altoona
1 provider
Argyle
1 provider
Beloit
1 provider
Burlington
1 provider
Darien
1 provider
Fall River
1 provider
Fountain City
1 provider
Genoa City
1 provider
Hubertus
1 provider
Hartford
1 provider
Iron Ridge
1 provider
Ixonia
1 provider
Janesville
1 provider
Johnson Creek
1 provider
Kenosha
1 provider
Lake Mills
1 provider
Luck
1 provider
Mazomanie
1 provider
Menasha
1 provider
Mequon
1 provider
Monona
1 provider
North Lake
1 provider
Odanah
1 provider
Onalaska
1 provider
Randolph
1 provider
Rib Lake
1 provider
Roberts
1 provider
Shawano
1 provider
Sheboygan
1 provider
Stanley
1 provider
Superior
1 provider
Union Grove
1 provider
Viroqua
1 provider
Waupaca
1 provider
Wausau
1 provider
Weston
1 provider
Williams Bay
1 provider
Radon Providers in Wisconsin(showing top 20)
Radon Testing in Wisconsin — FAQ
How often should I test for radon in Wisconsin?
The EPA recommends testing every two years in Wisconsin. Always test when moving into a new home, after renovations that affect lower levels, and after installing a mitigation system.
What is the EPA action level for radon?
The EPA recommends taking action to reduce radon if indoor levels reach 4 pCi/L or higher. Even levels between 2–4 pCi/L present risk, and mitigation is recommended where feasible.
Do I need a certified radon tester in Wisconsin?
For real estate transactions, most states require a certified tester. Look for NRPP or AARST-NRPP certification. Wisconsin may also have its own state program — check your state radon office for specific requirements.