Panique (1977)

A major pulp and paper company uses a new money-saving fabrication process that, as a side effect, starts dumping its waste in the St. Lawrence river near a major city. The chemicals cannot be filtered and get into tap water. Soon enough, this causes many people, mostly children, to end up in hospitals with a variety of alarming symptoms. The dangers of this process are starting to be suspected, but the company does everything it can to not take the blame, such as changing their formula during the governmental tests. A major news scandal is soon underway.