PFAS

PFAS is short for per- and polyfluoroalkyl substances. Missouri DNR calls them a group of manmade fluorinated chemicals used in industry and consumer products since the 1940s. They repel water and oil, so they show up in non-stick cookware, carpet, clothing, fabrics, cleaning products and some firefighting foams.

There are thousands of them. DNR says they can be found in water, soil, air and food, and in materials in homes and workplaces. Many break down very slowly and can build up in people, animals and the environment. That is why they have the nickname forever chemicals.

For property owners, the questions are practical. Does my water, soil or site have PFAS? What level counts as too much? Labs report in parts per trillion, and EPA has set drinking water limits for several PFAS, starting with PFOA and PFOS.

Start with testing. Results tell you if action is needed and what kind.