The video below is a recording of a February 1, 2023 webinar, in which I discuss USEPA’s extremely low Drinking Water Health Advisory Levels (HALs) for PFOA and PFOS. The published HALs are scientifically questionable and have profound, negative economic and sociopsychological effects, because legal disputes and the public at large reference the HALs as health-based standards.

Click Here for the related article, co-authored with a former Director of USEPA’s Drinking Water Standards Division and a former USEPA toxicologist.

One Minute Summary:

Full Presentation (15 min):

For an expanded discussion of the issues surrounding the Grandjean et al. (2012) conclusions that I reference at 10:37, see this article by Paustenbach et al. (2025): United States Environmental Protection Agency’s Perfluorooctanoic Acid, Perfluorooctane Sulfonic Acid, and Related Per- and Polyfluoroalkyl Substances2024 Drinking Water Maximum Contaminant Level: Part 2 – Fifteen Misconceptions About the Health Hazards, Critical Reviews in Toxicology, 2025, VOL. 55, NO. 3, 368–415. https://doi.org/10.1080/10408444.2024.2446453.