WASHINGTON – A panel of scientists has recommended that all forms of per- and polyfluoroalkyl substances (PFAS) used in waterproofing, nonstick cookware, firefighting foams and other heat- and stain-resistant uses be classified collectively as problematic and restricted in uses.
PFAS — made by many companies including DuPont and Maplewood-based 3M — have been linked to environmental issues and also potential health problems. Known as "forever chemicals," they have become a source of multiple pollution lawsuits and injury claims because they build up in humans and take years to clear from the body.
Thousands of PFAS exist and hundreds are used commercially. In an article in the latest issue of the journal Environmental Science & Technology Letters, a broad range of scientists, including university researchers and a former high-ranking government official, called for government regulators and businesses to consider all PFAS as potentially toxic and curb their use accordingly.
Currently, only a few specific PFAS have been banned or limited in use.
The journal article "Scientific Basis for Managing PFAS as a Chemical Class" argues that the piecemeal approach has not worked to protect public health and that all PFAS should be placed in a class of problem compounds.
The potential human health issues associated with PFAS justify a new approach, the scientists said in the article.
The journal article stresses "the importance of eliminating nonessential uses of PFAS, and further developing safer alternatives and methods to remove existing PFAS from the environment."
Industries that use PFAS have taken the position that each individual type should be tested for adverse effects before being regulated or removed from the market.
