On October 29, 2025, the California State Water Resources Control Board’s Division of Drinking Water (State Water Board) issued new and revised notification levels and/or response levels for four per- and poly- fluoroalkyl substances (PFAS). … California’s notification and response levels are non-regulatory, health-based advisory levels established for contaminants in drinking water for which State MCLs have not been established. These are established as precautionary measures for contaminants that may be considered candidates for the establishment of MCLs. MCLs, in contrast, are legally binding limits that public water systems are required to meet.

Other PFAS news:

• E&E News by Politico: EPA eyes another ‘forever chemical’ approval for crops
• Center for Biological Diversity: News release: Trump EPA approves its first ‘forever chemical’ pesticide