Radon

Free Radon Test Kits

  • The City of Aspen and Pitkin County are pleased to offer free radon test kits this winter 2020/21 at the Pitkin County Administration Building.*
  • Please follow these steps:
    1. Call the County at 970-920-5200 and ask to speak with Elaine Bohman to make sure staff is available when you plan to pick up your kit.
    2. Go to the Pitkin County Administration Building lobby located at 530 E Main St. in Aspen between 8:30 am - 4:30 pm, Monday-Friday. 
    3. Be prepared to wear a mask and fill out the radon test kit check out form on a surface tablet provided by Elaine.
    4. Understand that the City and County health departments will use your radon test results for follow up activities with you should you have a high radon result (>4 pCi/L). 

*  If the County building lobby closes due to Covid-19 restrictions, radon test kits will be mailed when requested. 

  • Please email Jannette Whitcomb or call her at 970-920-5069 with any questions or to discuss receiving a radon test kit by mail.

Basic Radon Information

  • Radon is a colorless, odorless radioactive gas. Radon Information Sheet (PDF) 
  • According to the EPA, radon is the number one cause of lung cancer among non-smokers.
  • The only way to know if your home has high radon is to test.

Understanding Your Test Results

If your first radon test result is at or above the Environmental Protection Agency's (EPA) action level of 4 picocuries of radon per liter of air (pCi/L), then your next step is to retest: 

  • For results between 4 and 8 pCi/L, retest with a long term test kit.
  • For results above 8 pCi/L, retest in the same location with another short term test kit or kits. 
  • The City of Aspen has both short and long term radon test kits available to Aspen residents.
  • Over 1/2 of the homes tested in Aspen have levels in excess of the EPA recommended action level of 4 pCi/L.
  • High levels of radon (4 pCi/L or above) can be reduced through mitigation.

Radon Mitigation

If your test results are greater than 4 pCi/L, the EPA recommends mitigation.

  • Lowering high radon levels requires technical knowledge and special skills.
  • The City recommends that you use a certified radon mitigation contractor to ensure that the the correct system is installed for your building.
  • Mitigation costs can vary depending on the construction and type of home but generally costs range from approximately $1,500 to $2,500 for a medium size home. 
  • The City can provide assistance for Aspen residents to ensure that successful mitigation is done.
  • A list of local certified radon mitigators is provided for your reference though the City does not specifically endorse individual companies.