Public health advocates worry that Donald Trump could unravel federal clean water efforts, including restrictions on lead pipes and chemicals known as PFAS. Public health advocates worry that Donald Trump could unravel federal clean water efforts, including restrictions on lead pipes and chemicals known as PFAS. Global Warming, Greenhouse Gas Emissions, Regulation and Deregulation of Industry, Water Pollution, Hazardous and Toxic Substances, PFAS (Per- and Polyfluoroalkyl Substances), United States Politics and Government, Fluorides, Lead, Environmental Protection Agency, Health and Human Services Department, Biden, Joseph R Jr, Kennedy, Robert F Jr, Trump, Donald J, Zeldin, Lee M NYT > Science