A new wave of litigation about PFAS (per- and polyfluoroalkyl substances) has begun. If it gains momentum, it could be the biggest yet.

Litigation concerning PFAS—so-called “forever chemicals”—has been growing in intensity for more than 20 years now. So far, the litigation has mostly been based on either personal injury claims or claims concerning damage to natural resources, especially water. However, the past few years have seen a significant number of cases brought as consumer class actions based on a failure to disclose that a product contains PFAS as an ingredient or contaminant.