What is Radon?

  • Radon is a colorless, odorless radioactive gas that’s produced by decaying uranium.
  • It’s present in nearly all soils, and very low levels of radon are found in the air we breathe every day.
  • Radon is the number one cause of lung cancer amongst non-smokers according to American Cancer Association.
  • Approximately 21,000 people die from radon-related lung cancer every year in the United States alone.
Radon inside house
Diagram showing how radon enters the average home.
  • Tier 1: High potential – at least 25 homes tested with 25 percent or more having radon concentrations greater than or equal to 4 pCi/L
  • Tier 2: Moderate potential – at least 25 homes tested with 5 to 24 percent having radon concentrations greater than or equal to 4 pCi/L
  • Tier 3: Low potential – at least 25 homes tested with less than 5 percent having radon concentrations greater than or equal to 4 pCi/L
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