New EU-wide regulations aimed at controlling "forever chemicals," specifically PFAS (per- and polyfluoroalkyl substances), in drinking water officially took effect on January 12. This marks the first systematic monitoring of these persistent chemicals, requiring all EU nations to test contamination levels and adhere to new legal limits set by the recast Drinking Water Directive. While hailed as a positive step, experts express concern that the measures are insufficient, arguing they address symptoms rather than the source of PFAS pollution. The regulations mandate that member states take action to reduce PFAS levels if limits are exceeded, including informing the public and potentially implementing treatment steps or restricting water supplies. However, critics contend that thousands of PFAS remain unregulated, and the focus on reporting contamination after it occurs, rather than preventing its production and use, leaves millions of Europeans exposed to potential health risks.