Characterization of Per- and Polyfluoroalkyl Substances in Drinking Water Sources in the Greater Montreal Area, Quebec, Canada.

ABSTRACT: Per- and polyfluoroalkyl substances (PFAS) are persistent organic pollutants that are subject to increasingly restrictive regulations. This study characterized the occurrence of 77 PFAS compounds in raw and treated water from 15 drinking water treatment plants (WTPs) in the Greater Montreal Area, including an urban creek receiving airport runoff. A total of 32 compounds were detected at least once, representing diverse classes and carbon chain lengths. This helped to identify trends and precursor impacts on the PFAS profiles. Perfluoroalkyl carboxylic acids (PFCA) and perfluoroalkyl sulfonic acids (PFSA) were the most frequently detected. The highest concentrations occurred in WTPs drawing from the St. Lawrence River, while the Ottawa and L'Assomption Rivers demonstrated the occurrence of

SUBMITTER: Ceballos IM 

PROVIDER: S-EPMC12439298 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature