We have previously written on the evolving risks associated with PFAS—also known as “forever chemicals”—and their implications for policyholders navigating environmental liabilities involving both PFAS and PFAS-related chemicals (i.e., fluorinated chemicals that do not fit the definition of PFAS). Our prior analyses explored coverage strategies and regulatory enforcement trends. With regulatory activity and litigation continuing to accelerate, we are circling back to provide an updated look at the regulatory and legal landscape surrounding PFAS, including recent federal developments, insurer responses and practical guidance for policyholders navigating this complex and high-stakes area. … Since our last insurance roundup in October 2023, there have been significant developments in PFAS regulation, litigation and insurance coverage about which policyholders should be aware. This blog post provides an inexhaustive overview of some of the more significant developments.