Occurrence and Risk Assessment of Typical Endocrine-Disrupting Chemicals in Surface and Drinking Water Across Four River Basins — Henan Province, China, 2025

Abstract

What is already known about this topic? Bisphenols and per- and polyfluoroalkyl substances (PFASs) are endocrine-disrupting chemicals found in aquatic ecosystems. Henan, a critical water conveyance region within the South-to-North Water Diversion Project, encompasses four river basins characterized by complex hydrological conditions. However, systematic monitoring of contaminant levels remains insufficient. What is added by this report? This study identified key priority pollutants and highlighted the dominance of short-chain PFASs in the region. What are the implications for public health practice? These baseline data address gaps in existing knowledge on emerging pollutants omitted from GB 5749-2022, thereby providing critical scientific evidence to guide the revision of national drinking water standards, strengthen watershed pollution control, and safeguard public health and ecotoxicological integrity.