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On March 26, the California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA) gave notice of its selection of several per- and polyfluoroalkyl substances (PFAS) for review and possible listing under California’s Proposition 65 (Prop 65). OEHHA published two separate notices for public comment: one notice for perfluorooctane sulfonate (PFOS) and its salts and transformation and degradation precursors, and another notice for perfluorodecanoic acid (PFDA), perfluorohexanesulfonic acid (PFHxS), perfluorononanoic acid (PFNA), and perfluoroundecanoic acid (PFUnDA), as well as each of their salts. The public comment period for both notices closes on May 10, 2021.

On March 17, the U.S. Environmental Protection Agency (EPA) published an Advance Notice of Proposed Rulemaking (ANPRM) that puts forth 28 questions directed at manufacturers and formulators of per- and polyfluoroalkyl substances (PFAS). The agency intends to use the ANPRM and comments it receives to initiate formal rulemaking to establish effluent limitations guidelines (ELGs) for facilities that manufacture or blend PFAS with other chemicals or products, likely at least initially as an amendment to the existing guidelines governing the “Organic Chemicals, Plastics and Synthetic Fibers” (OCPSF) industrial sector.

Climate change and environmental justice are currently dominating the conversation in the environmental legal community, but 2021 promises to be an extremely active year for one of the most challenging environmental issues of this era — the emergence of per- and polyfluoroalkyl substances (PFAS) as a significant public health concern. The U.S. Environmental Protection Agency (USEPA) demonstrated its continued commitment to implementing the national PFAS Action Plan by announcing on February 22 two important steps toward establishing federal drinking water standards for PFAS compounds under the Safe Drinking Water Act (SDWA).

On July 27, the Michigan Legislature’s Joint Committee on Administrative Rules (JCAR) filed new administrative rules and rule amendments concerning Michigan’s drinking water standards with the Michigan Secretary of State’s office. Included among the new rules are maximum contaminant levels (MCLs) for seven different types of per- and polyfluoroalkyl substances (PFAS). All of the new rules and rule amendments will take effect on August 3, 2020.