State and Federal PFAS Litigation – 2019 to Q4 2022 By Christopher M. Roe on January 23, 2023 Email this postTweet this postLike this postShare this post on LinkedIn PFAS-related litigation continues to climb and to diversify as to claims and parties. See the attached graphics, updated through the fourth quarter of 2022. We will continue to update these graphics on a quarterly basis.