Radon, the 2nd leading cause of lung cancer in the United States; and found in groundwater, bedrock and soil can creep into the home through (1) construction joints, (2) cavities and cracks inside walls, (3) the sump pump, (4) cracks in solid floors, (5) gaps around service pipes, (6) gaps in suspended floors, and (7) in private wells and groundwater supplies*.
*High radon levels in the water supply is more likely when its source is ground water, e.g. a private well or a public water supply system that uses ground water. Most public water supplies are sourced from surface water (lakes, rivers, and reservoirs).
Test your home. Make repairs. Learn more at www.cdc.gov/radon/index.html
