Nearly a decade after contamination was discovered in drinking water around the former Saint-Gobain manufacturing facility in Merrimack, many people in Londonderry are still drinking bottled water. Wednesday night, residents gathered in the Londonderry High School cafeteria to learn about some potential solutions. “Getting clean drinking water to all the residents of Londonderry is a priority for me,” said town council chair Ron Dunn. While Saint-Gobain must pay for clean drinking water connections or in-home filtration systems for some residents, there is contamination well beyond the borders of the company’s legal responsibility. Safe to Drink is a podcast 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.