“These companies’ expansion plans show that unless governments and regulators insist on a rapid phaseout, we will face a new tidal wave of forever chemicals,” said Anne-Sofie Bäckar, the executive director of ChemSec, the Swedish chemicals watchdog that carried out the research.

ChemSec’s survey found nearly all of the 10 biggest manufacturers of Pfas had plans to increase production, at sites in Europe, Asia and North America.