Stage 1 fire restrictions, enacted for unincorporated areas of western Boulder County.

Radon Testing
happy mom & daughter having a tea party

Radon Testing

Testing for Radon Is Easy

Testing for radon is simple and inexpensive. Any home in any area can have a radon problem—even apartments if they are below the third floor. Millions of people have tested their homes for radon.

Selecting a Test Kit

Do-it-yourself kits allow you to test your home radon levels yourself. Test kits can be purchased at most local hardware stores or online at

These Boulder County locations sell short-term test kits:

Center for ReSource Conservation
The ReSource Tool Library
6400 Arapahoe Rd
Boulder, Colorado 80303

Colorado State University Cooperative Extension
Boulder County Extension
9595 Nelson Road
Longmont, Colorado 80501

Test Results

If test results show that your home has a high level of radon, don’t worry. High levels of radon are easily remedied. Needed repairs often cost no more than many other common home repairs (ranging from $800 – $1,200) and will not change the appearance of your home. For information about reducing your home’s radon level, visit our section on radon mitigation or Understanding Your Test Results in the Citizen’s Guide to Radon.

Contact Us

Air Quality Program

Main: 303-441-1564
Submit a question


3450 Broadway
Map and Directions
Hours: 8 a.m. to 4:30 p.m.

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