PFAS “forever chemicals” found in 45% of U.S. tap water, study says

A new study found that nearly half of the nation’s drinking water contains potentially harmful “forever chemicals,” called PFAS. The substances have been linked to several serious health problems, including some cancers. Mark Strassmann reports on efforts to eliminate the chemicals, plus the study’s lead author, Kelly Smalling, joins CBS News to break down the findings. Source