Updated and corrected at 10:21 a.m. Contrary to an earlier version of this story, DuPont no longer uses C-8 at the West Virginia.

DuPont and Chemours Co. said on Monday they had agreed to pay about $671 million in cash to settle several lawsuits related to the leak of a toxic chemical, used to make Teflon, that has been linked to cancer and other diseases.

The companies settled about 3,550 personal injury claims arising from the leak of perfluorooctanoic acid, also known as PFOA or C-8, from DuPont's plant in Parkersburg, W.Va.

The leak allegedly contaminated local water supplies and has been linked to six diseases, including testicular and kidney cancers.

DuPont said in a statement that it had stopped using C-8 in operations at the West Virginia plant more than a decade ago. It had used C-8 there since the early 1950s.

Chemours Co., which was spun off from DuPont to house its performance chemicals segment, said it will pay half of the settlement. Both companies denied any wrongdoing.

"We look forward to working with DuPont to finalize this settlement and get these injured class members paid as quickly as possible," Rob Bilott, a lawyer for the plaintiffs, said in a statement.