• Radon Unit

    Working closely with the US Environmental Protection Agency (EPA), the Indoor Air Quality Program's Radon Unit advises and assists homeowners, radon mitigators and owners of public buildings in dealing with high levels of radon in indoor air that contribute unnecessarily to the background radiation received by members of the public. The Radon Assessment Unit receives funding from the EPA under its State Indoor Radon Grant program to assist in these advisory and mitigation activities.

    Contact the Radon Unit at (800) 723-6695 (toll-free in Massachusetts only) or (413) 586-7525

    Note: The operating hours are Mondays through Fridays from 8:45 a.m. to 5:00 p.m. To leave a message when calling outside of operating hours, please follow the language prompts (1 for English, 2 for Spanish), and then dial 2 to reach the office mailbox.

    Phone number: 1-800-RADON-95, test your home for radon.

  • Radon Fact Sheet

  • Radon References in the MA State Building Code (780 CMR)

    • 780 CMR 34.00: Existing Structures
    • 780 CMR 51: Massachusetts Residential Code
    • Appendix F: Reference Data For Repair, Alteration, Addition And Change Of Use Of Existing Buildings
  • Massachusetts Environmental Public Health Tracking – Radon Information