EPA’s plans to investigate – and eventually establish limits on and liability for – PFAS in wastewater discharges and biosolids crossed a significant milestone on January 31, 2024, with the completion of two new analytical methods to detect these ubiquitous contaminants. The most significant of the two is Method 1633, which provides a standardized quantitative method for laboratories to detect 40 different PFAS compounds, at very low levels, in wastewater, surface water, groundwater, soil, biosolids, sediment, landfill leachate, and fish tissue. Method 1621 is a low-cost screening method for the presence of fluorine-containing organic compounds, which could lead to use of the more sensitive Method 1633 to further characterize any PFAS in the sample. EPA’s public statements provide no timeline for seeking approval of these methods for PFAS monitoring of wastewater discharges as part of 40 C.F.R. Part 136, but a Method Update Rule is likely to be proposed before the end of the year.

EPA has big plans for the PFAS data that these two new methods will generate.Continue Reading Finalizing PFAS Detection Methods, EPA Moves Closer to Locating and Limiting Further PFAS Releases and Requiring Their Cleanup