RADON HELP IN COLUMBIA, MO
Radon tested high? Here's what to do next.
Clear local guidance and mitigation quotes for Columbia and Boone County.
- Basements, crawl spaces and slab homes
- Certified-professional options
- No-pressure quote request
Serving Columbia and Boone County
Local information for local homeowners.
Missouri guidance, clearly explained
From testing to mitigation, in plain language.
Built around your test result
Practical next steps, not guesswork.
COMMON SITUATIONS
Start with the answer you need
Straightforward information for Columbia area homeowners.
My result is 4.0 or higher
Understand what it means and get next steps.
Learn moreHow much will mitigation cost?
Get typical ranges and what affects the price.
Learn moreDo I need to test again?
Learn when a retest makes sense.
Learn moreI'm buying or selling a home
Know what to expect and how to move forward.
Learn moreUNDERSTAND YOUR NUMBER
What your result means
Radon is measured in picocuries per liter (pCi/L). Here is what different levels mean.
At or above 4.0 pCi/L
Missouri and EPA guidance recommends taking action to fix the home. This is the EPA action level.
Between 2.0 and 4.0 pCi/L
Consider taking action and review the test conditions. There is no truly safe level of radon.
Below 2.0 pCi/L
Lower does not mean zero risk. Future testing may still be appropriate, especially after major renovations.
THE PROCESS
How radon mitigation works
A mitigation system creates sub-slab depressurization to draw radon from beneath your home and vent it safely outside.
A typical radon mitigation system vents radon safely above your home.
The home and test result are assessed
A qualified professional reviews your test result, foundation type, and home layout.
The correct suction point and system design are selected
The system is planned based on whether you have a basement, crawl space, or slab.
Radon is drawn from beneath the home
A pipe and fan create sub-slab depressurization, pulling radon gas from under the foundation.
The gas is vented safely above the roofline
Radon is exhausted outdoors, above the roof, where it disperses harmlessly.
Post-mitigation testing checks the result
A follow-up test confirms the system has reduced radon levels below the action level.
LOCAL PATHWAYS
Common Columbia homeowner situations
Find the pathway that matches your home and situation.
Elevated test result
Your test came back at or above 4.0 pCi/L.
Home purchase or sale
What to expect during a real-estate transaction.
Basement home
How mitigation works with a full basement foundation.
Crawl-space home
Sealing and ventilation for crawl-space foundations.
Slab-on-grade home
Mitigation options for homes built on a concrete slab.
Existing fan or system problem
Diagnosing and repairing an existing mitigation system.
Landlord or rental property
Guidance for rental owners and property managers.
Have not tested yet
How to test and what to expect in Columbia.
COST PREVIEW
How much does radon mitigation cost?
Missouri DHSS reports that mitigation commonly ranges from approximately $500 to $2,500, depending on the home's size and construction.
Typical range: $500–$2,500
Per Missouri DHSS guidance
An actual quote may depend on:
- Foundation type
- Number of suction points
- Crawl-space work
- Pipe routing
- Electrical requirements
- Post-installation testing
- System warranties
Free Missouri radon test kit
Missouri residents may request one free short-term radon test kit per household while supplies last through the Missouri DHSS.
Columbia Radon Guide does not distribute test kits. Requests are fulfilled directly by the Missouri Department of Health and Senior Services, subject to availability.
Request from Missouri DHSSMissouri DHSS reports that radon is present in every Missouri county, and that one in three homes tested through its residential testing program had results above the recommended action level.
SERVICE AREA
Columbia and Boone County
Our guidance focuses on Columbia, Missouri and the surrounding Boone County communities.
READY TO ACT?
Request a local radon quote
Get a free, no-obligation quote from a local radon professional serving Columbia and Boone County.