EPA finalized national primary drinking water regulations 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), and perfluorobutane sulfonic acid (PFBS); the Agency also finalized a Hazard Index of 1 as the maximum contaminant level goal and maximum contaminant level for any mixture containing two or more of PFHxS, PFNA, HFPO-DA, and PFBS.

United States v. Grindstone Indian Rancheria of Wintun-Wailaki Indians of California, No. 2:24-cv-01044-KJM-CKD (E.D. Cal. Apr. 9, 2024). Under a proposed consent decree, a settling SDWA defendant must pay a civil penalty of $8,963 and perform injunctive relief measures including demonstrating compliance with surface water treatment requirements, providing boil water notices and alternative water supply, and developing and implementing an extensive operation and maintenance plan for the Grindstone Indian Rancheria Public Water System. 

EPA tentatively approved revisions to Delaware’s Public Water System Supervision Program concerning drinking water regulations for the Stage 1 Disinfectants and Disinfection Byproduct Rule. 

EPA approved alternative testing methods for use in measuring the levels of contaminants in drinking water to determine compliance with national primary drinking water regulations under the SDWA.