DuPont says a plant designed to filter out C8 from drinking water systems in Mason County is now operational.

That's the last of the filtration systems, the company which uses C8 to make Teflon, was required to install...as part of a 2005 agreement with plaintiffs in a class-action lawsuit.

In all, seven state-of-the-art systems were installed...two of them in West Virginia and the rest in Ohio.

They include plants in Belpre, Little Hocking, and Tuppers Plains...and in Lubeck as well as the just-completed Mason County facility.