Despite Scientific Uncertainty, ATSDR Chief Backs Strict PFAS Risk Levels

The head of a federal health agency that earlier this year recommended stricter risk levels for perfluorinated chemicals than EPA's told a Senate hearing that regulators face significant scientific uncertainty assessing the substances' risks, and raised doubts about whether federal agencies will be able to reach agreement on the risks. But Patrick Breysse, director of the Agency for Toxic Substances and Disease Registry (ATSDR), told the field hearing in Grand Rapids, MI, that lawmakers should continue to pressure agencies to...