DuPont and Chemours Co. have agreed to pay $670.7 million to settle 3,550 lawsuits in multidistrict litigation related to the supposed dumping of a toxic chemical, known as C8, into the Ohio River near a former DuPont factory in West Virginia.

The companies announced the settlement in separate press releases Monday morning. According to the statements, DuPont and Chemours will split the cash payment evenly to extinguish all claims pending in an Ohio federal court. Neither company admitted any wrongdoing in statements announcing the accord.