When we?ve been exposed to something that could harm us, what are we supposed to do ? as regulators, as doctors, as company executives, or as people just trying to live our lives? Learn more about your ad choices. Visit megaphone.fm/adchoices

Former workers at Saint-Gobain?s New Hampshire plant share what they did ? and didn?t ? know about PFOA and its potential health effects. And how the chemical industry has worked to sow doubt to its own benefit. Learn more about your ad choices. Visit megaphone.fm/adchoices

We go back in time to Hoosick Falls, New York where a man looks for answers after his father dies of cancer following his retirement from the local Saint-Gobain plant. What he finds changes the course of this whole story: a remarkable kind of chemical once used to help make the Atom Bomb that manufacturers knew could be dangerous for decades. Learn more about your ad choices. Visit megaphone.fm/adchoices

A New Hampshire town finds out its water has been contaminated by a ?forever chemical.? The source appears to be the nearby Saint-Gobain plant. Officials say the potential health effects are unclear, but most people can still drink the water. One resident doesn?t buy it and goes down a research rabbit hole. She soon learns all this has happened before. Learn more about your ad choices. Visit megaphone.fm/adchoices

A New Hampshire town finds out their water has been contaminated by a chemical. Their most basic question ? whether the water is safe to drink ? doesn?t have a clear answer. Nobody seems to know much about this so-called forever chemical, which is weird because? this has all happened before. From the Document team at New Hampshire Public Radio, ?Safe to Drink? is a four-part series about the water contamination story that keeps repeating in town after town ? and about the people who fought for answers through a maze of chemistry, regulations, and illnesses. Learn more about your ad choices. Visit megaphone.fm/adchoices