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Environmental Health and Natural Resources
Radon

Radon is a cancer-causing gaseous radioactive element that can be found throughout the country. It results from the natural breakdown of uranium in soil, rock and water. Radon can't be seen or smelled, but it may be present where you live. Testing is the only way to know for sure.

Common ways for radon gas to move into a residence include cracks in foundations and/or walls, crawl spaces, construction joints, openings around sump pumps and drains, spaces between basement walls and slabs, and showers, etc. that use well water with a high radon concentration. The age of a residence is not determinative of whether or not you may have a radon problem.

Many federal and state resources are available for you to learn more about radon and how to test* for its presence:

U.S. EPA Resources:

EPA Radon Homepage

"A Citizen's Guide to Radon: The Guide to Protecting Yourself and Your Family from Radon"

Radon- Frequently Asked Questions

National Radon Hotline: 1-800-SOS-RADON (1-800-767-7236)

CO Department of Public Health and Environment Resources:

Radon Program Webpage

Radon-Frequently Asked Questions

NEHA-Listed Colorado Radon Labs, Measurement Providers & Mitigation Contractors

Colorado Radon Zones

CDPHE - Colorado Radiation Control Program: 303-692-3300 or 888-569-1831

* The Pitkin County Environmental Health & Natural Resources Department does not perform radon testing.
Department Pages



Air Quality
  • Fugitive Dust
  • Fireplaces/Woodstoves
  • Mold
  • Asbestos

  • Department contact info
    Schultz Health and Human Services Building
    0405 Castle Creek Road
    Suite 10
    Aspen, CO  81611

    Hours:
    By Appointment Only Please Call Staff
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     Phone: (970) 920-5070
    (970) 920-7825 TDD/TTY
       Fax: (970) 920-5077

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