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The Florida Department of Health works to protect, promote, and improve the health of all people in Florida through integrated state, county, and community efforts.

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Radon and Indoor Air Quality

Florida Department of Health in Nassau County Environmental Health


Radon Facts:
  • Radon is the leading cause of lung cancer among non-smokers.

  • Did you know 1 in 5 homes in Florida has an elevated radon level?

  • Test your home free of charge by filling out this form!

  • Radon is a naturally occurring, odorless, colorless, tasteless, and radioactive gas produced from the radioactive decay of radium, found in most soils and earthen construction materials.

  • Radon is the single largest source of radiation exposure in the U.S.

  • The U.S. Environmental Protection Agency estimates that radon is responsible for more than 21,000 lung cancer deaths per year in the U.S. (about one person every 25 minutes).

  • U.S. Surgeon General recommends all houses be tested for radon.

  • For more information visit our webpage at

Public Health Service Announcements on Radon

Indoor Air 

The United States Environmental Protection Agency estimates the average American is indoors nearly 90 percent of the time. Poor indoor air quality can cause or contribute to the development of chronic respiratory diseases such as asthma or cause acute symptoms like headaches, dry eyes, nasal congestion, nausea and fatigue. While chemical pollutants such as radon gas or formaldehyde are of concern, pollutants of biological origin are the most prevalent in homes. Common pollutants include molds, bacteria, viruses, pollen, dust mites and pets.