As a naturally occurring radioactive gas, radon can dissolve into well water from surrounding rock and soil. When that water is used in the home (showers, laundry, dishwashing), radon can release into indoor air — long-term inhalation increases lung-cancer risk. Private bedrock wells in parts of New England are where elevated levels are most often found.
You can’t see, taste, or smell radon. Testing is the only way to know your level (reported in pCi/L). As a rule of thumb, every 10,000 pCi/L of radon in water can add about 1 pCi/L to indoor air during normal household use.
Typically, radon is reduced with point-of-entry aeration (preferred for higher levels) or specially sized granular activated carbon (GAC) systems (often used for lower levels). Your local Culligan water expert will test, explain your results, and recommend the right whole-home approach so you don’t waste time and money on equipment that won’t address radon.
