EPA revised the Consumer Confidence Report Rule in accordance with America’s Water Infrastructure Act of 2018 to require states, territories, and tribes with primary enforcement responsibility to report compliance monitoring data for all national primary drinking water regulations to the Agency.  

EPA established requirements for legacy coal combustion residuals (CCR) surface impoundments, as well as CCR management units at active CCR facilities and at inactive CCR facilities with a legacy CCR surface impoundment. 

EPA denied a petition from the Center for Biological Diversity requesting that discarded polyvinyl chloride be listed as a hazardous waste under RCRA. 

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 proposed to revise regulations that allow for the open burning and detonation (OB/OD) of waste explosives by reducing OB/OD of waste explosives and increasing control of air emissions. 

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. 

United States v. Toa Alta, Puerto Rico, Municipality of, No. 3:21-01087 (D.P.R. Feb. 13, 2024). A proposed second stipulation and final order resolves two claims under RCRA and requires a settling defendant to remove and dispose of leachate in the Toa Alta landfill’s southeast cell and to pay a $50,000 civil penalty.