Find Radon Testers in Montana
Certified radon testing and mitigation professionals across Montana. Browse 20+ listed providers below.
Radon Risk Level
EPA data for this state
High radon state; Rocky Mountain geology contributes.
Browse by City in Montana
Billings
4 providers
Bozeman
4 providers
Great Falls
3 providers
Missoula
2 providers
Belgrade
2 providers
Butte
1 provider
Glendive
1 provider
Anaconda
1 provider
Lakeside
1 provider
Bonner
1 provider
Corvallis
1 provider
Florence
1 provider
Kalispell
1 provider
Whitefish
1 provider
Helena
1 provider
Laurel
1 provider
Lolo
1 provider
Radon Providers in Montana(showing top 20)
Radon Testing in Montana — FAQ
How often should I test for radon in Montana?
The EPA recommends testing every two years in Montana. 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 Montana?
For real estate transactions, most states require a certified tester. Look for NRPP or AARST-NRPP certification. Montana may also have its own state program — check your state radon office for specific requirements.