• PFAS National Primary Drinking Water Regulation

In March 2023, the U.S. Environmental Protection Agency (EPA) proposed and requested comment on the National Primary Drinking Water Regulation (NPDWR) and health-based Maximum Contaminant Level Goals (MCLGs) for six per- and polyfluoroalkyl substances (PFAS): perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid (HFPO-DA, commonly known as GenX Chemicals), and perfluorobutane sulfonic acid (PFBS). After consideration of public comment and consistent with the provisions set forth under the Safe Drinking Water Act (SDWA), the EPA is finalizing NPDWRs for these six PFAS. Through this action, the EPA is finalizing MCLGs for PFOA and PFOS at zero. Considering feasibility, the EPA is promulgating individual Maximum Contaminant Levels (MCLs) for PFOA and PFOS at 4.0 nanograms per liter (ng/L) or parts per trillion (ppt). The EPA is also finalizing individual MCLGs and is promulgating individual MCLs for PFHxS, PFNA, and HFPO-DA at 10 ng/L. In addition to the individual MCLs for PFHxS, PFNA, and HFPO-DA, in consideration of the known toxic effects, dose additive health concerns and occurrence and likely co-occurrence in drinking water of these three PFAS, as well as PFBS, the EPA is finalizing a Hazard Index (HI) of 1 (unitless) as the MCLG and MCL for any mixture containing two or more of PFHxS, PFNA, HFPO-DA, and PFBS. Once fully implemented, the EPA estimates that the rule will prevent thousands of deaths and reduce tens of thousands of serious PFAS-attributable illnesses.


This final rule is effective on June 25, 2024. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of June 25, 2024.   Federal Register Notice

  • National Environmental Policy Act Implementing Regulations Revisions Phase 2

The Council on Environmental Quality (CEQ) is finalizing its “Bipartisan Permitting Reform Implementation Rule” to revise its regulations for implementing the procedural provisions of the National Environmental Policy Act (NEPA), including the recent amendments to NEPA in the Fiscal Responsibility Act. CEQ is making these revisions to provide for an effective environmental review process; ensure full and fair public engagement; enhance efficiency and regulatory certainty; and promote sound Federal agency decision making that is grounded in science, including consideration of relevant environmental, climate change, and environmental justice effects. These changes are grounded in NEPA’s statutory text and purpose, including making decisions informed by science; CEQ’s extensive experience implementing NEPA; CEQ’s perspective on how NEPA can best inform agency decision making; longstanding Federal agency experience and practice; and case law interpreting NEPA’s requirements.


The effective date is July 1, 2024.

Federal Register Notice