Anyone who has enjoyed the ease of sliding a fried egg out of a Teflon-coated frying pan or watched rain water bead on a jacket can thank per- and poly-fluoroalkyl substances (PFAS). For all the good they do, however, this wide range of uses leads to people regularly ingesting these chemicals. A Purdue scientist believes the key to lowering PFAS levels in drinking water is to reduce their use and to capture or remediate them before they leave wastewater treatment plants.