A new framework for mitigating the harmful effects of PFAS suggests that companies stop using nonstick chemicals in products where they’re not essential.

PFAS chemicals, or per- and polyfluoroalkyl substances, are used in nonstick coatings, firefighting foams, and some food packaging.

The chemicals don’t break down easily and have caused contamination problems in drinking water supplies across the U.S. and have been associated with increases in cancer and other health problems.

The proposed framework, outlined in a paper released June 17, is based on the Montreal Protocol, a global agreement to phase...