The federal government has settled a water pollution case against Chemours, a company that makes and uses toxic “forever chemicals” - the kind that don’t break down, much like Chemours’ legal troubles.

The Justice Department, Environmental Protection Agency, and the state of West Virginia announced Wednesday that Chemours will pay an estimated $450 million for pollution at its facilities in West Virginia, North Carolina, and New Jersey. The federal government alleged that Chemours illegally released chemicals into waterways near those facilities, impacting “the drinking water of tens of thousands of people” who live nearby.

Chemours spun off from chemical company DuPont a decade ago, just as lawsuits over DuPont’s “forever chemicals” - also called PFAS - began to pile up. It took on the chemical giant’s PFAS business, presumably including the part where you get sued for poisoning water supplies. PFAS is a family of man-made chemicals that don’t degrade naturally, meaning they’ll outlast us all, including, apparently, the legal defenses of companies that make them.