Saint-Gobain Performance Plastics will pay an estimated $20 million to pipe clean municipal water to Vermont residents impacted by chemical contamination of their private drinking water wells in a settlement approved by a state superior court Oct. 3.

Vermont and Saint-Gobain had reached an agreement in July concerning the perfluorooctanoic acid (PFOA) contamination of the well water of about 200 homes in the southern Vermont town of Bennington. The state then asked the Bennington Superior Court to grant a consent order to memorialize the settlement.

Saint-Gobain voluntarily signed the agreement, Dina Pokedoff, Saint-Gobain spokeswoman, told Bloomberg BNA in an Oct....