On April 8, 2025, the U.S. Environmental Protection Agency (EPA) requested the U.S. Court of Appeals for the D.C. Circuit extend the abeyance in the challenge to EPA’s Final Rule
Continue Reading EPA Requests Additional 30-Day Abeyance in PFAS Drinking Water Rule LitigationLitigation Over PFAS MCLs on Hold for Now
By Vanessa Pinto on
A federal appeals court has granted the Environmental Protection Agency’s request for a 60-day abeyance in litigation challenging the Maximum Contaminant Levels (MCLs) for six PFAS chemicals.
In a February…
Continue Reading Litigation Over PFAS MCLs on Hold for NowBriefing Underway in Challenge to Maximum Contaminant Limits (MCLs) for PFAS in Drinking Water
By Vanessa Pinto on
Petitioners filed their opening briefs in the consolidated challenge to the Environmental Protection Agency’s (“EPA’s”) Final Rule establishing Maximum Contaminant Levels (“MCLs”) and Maximum Contaminant Level Goals (“MCLGs”) for six…
Continue Reading Briefing Underway in Challenge to Maximum Contaminant Limits (MCLs) for PFAS in Drinking WaterThe Impact of Chevron’s Demise on the Regulation of PFAS
By Karen H. Davis & Vanessa Pinto on
On June 28, 2024, in its decision in Loper Bright Enterprises, et al. v. Raimondo, et al., the U.S. Supreme Court held that its longstanding precedent granting deference to…
Continue Reading The Impact of Chevron’s Demise on the Regulation of PFASFederal Drinking Water Standards for PFAS Will Influence Groundwater Remediation Standards
By Aaron Mapes & Collin Crecco on
As discussed in a previous post, EPA recently issued a final rule establishing drinking water standards, known as maximum contaminant levels (MCLs), for six per- and polyfluoroalkyl substances (PFAS). …
Continue Reading Federal Drinking Water Standards for PFAS Will Influence Groundwater Remediation StandardsEPA Issues Final MCLs for PFOA, PFOS, PFNA, GenX, PFHxS, and PFBS
By Karen H. Davis on
On April 8, 2024, the EPA Administrator signed the final rule establishing drinking water standards, also known as MCLs, for six PFAS (PFOA, PFOS, PFNA, GenX (HFPO-DA), PFHxS, and PFBS). …
Continue Reading EPA Issues Final MCLs for PFOA, PFOS, PFNA, GenX, PFHxS, and PFBSPADEP Proposes Key PFAS Amendments to Act 2 Regulations
By Robert J. Schena on
On March 12, 2024, the Pennsylvania Environmental Quality Board (EQB) approved the Pennsylvania Department of Environmental Protection’s (PADEP) proposal to amend the Land Recycling and Remediation Standards Act regulations…
Continue Reading PADEP Proposes Key PFAS Amendments to Act 2 RegulationsEPA Receives Thousands of Comments On its Proposed PFAS Maximum Contaminant Levels
By Robert J. Schena on
As discussed in a previous post, the United States Environmental Protection Agency (EPA) proposed a National Primary Drinking Water Regulation to establish maximum contaminant levels for six different PFAS…
Continue Reading EPA Receives Thousands of Comments On its Proposed PFAS Maximum Contaminant LevelsEPA Receives Extensive Comments on its Proposed PFAS MCLs
By Karen H. Davis on
On May 30, 2023, the comment period closed on EPA’s proposed maximum contaminant levels (“MCLs”) for six PFAS at which time EPA had received 97,793 comments. Under the proposed…
Continue Reading EPA Receives Extensive Comments on its Proposed PFAS MCLsEPA Proposes Maximum Contaminant Levels for Six PFAS Compounds
By Robert J. Schena on
On March 14, 2023, the United States Environmental Protection Agency (EPA) announced the proposed National Primary Drinking Water Regulation (NPDWR) for six PFAS. The public comment period will be open…
Continue Reading EPA Proposes Maximum Contaminant Levels for Six PFAS Compounds