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Fact Sheet

  • Radon gas comes from the decay products of uranium in the ground beneath buildings. It can seep into your home through cracks, sumps, joints, basement drains or other tiny openings in foundations.
  • Radon gas emits radioactive particles that can be inhaled into the lungs. The adverse health effect—lung cancer—may not be produced immediately. An estimated 21,800 people die annually from radon-related lung cancer. 
  • Radon is invisible, odorless, and tasteless; the only way to know if radon is present in elevated levels is to test.
  • One in 15 houses have elevated radon levels; however, in some states it is over 50 to 70% of homes with over 4.0 pCi/L. Elevated radon levels have been discovered in every state in our nation.
  • EPA uses 4.0 pCi/L as the action level, but the WHO uses 2.7 pCi/L as the reference point. Yet, there is no safe level.
  • Elevated levels can be present in any type of home, old, new, basement, no basement, crawlspace or slab on grade; the only way to know is to test.
  • Because changes occur in our environment, it is suggested to perform a radon test every two years.
  • The USEPA estimates as many as 8 million homes throughout the country have elevated levels of radon.
  • More homes have elevated levels of radon today than 25 years ago. Over 70,000 classrooms have radon levels above the EPA action level.

The statistics are not just numbers but represent our friends, family members, and neighbors.