Study finds toxic chemical in 162 US drinking water systems

It appears many Americans, possibly 15 million, are drinking tainted H2O, according to a study released by Northeastern University and the Environmental Working Group.

The study found the toxic chemical PFC in 162 drinking water systems across the U.S. PFCs are often used in products like cookware and waterproof clothing.

The toxic chemicals are linked to health issues, including cancer and weakened immune systems. PFCs are not classified as a federally regulated water contaminant like lead or arsenic.