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 <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

4: The neighborly thing to do

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.