polyfluoroalkyl substances

September 2, 2021, the Environmental Protection Agency (EPA), in collaboration with the Department of Defense (DOD), released the first EPA-validated laboratory analytical method to test for per- and polyfluoroalkyl substances (PFAS) in eight different environmental media. Method 1633, currently in draft form, is a single-laboratory validated method to test for 40 PFAS compounds in wastewater,