Total Oxidizable Precursors (TOP) of Perfluoroalkyl and Polyfluoroalkyl Substances in Canadian Municipal Wastewater Treatment Systems

This data set contains concentrations of perfluoroalkyl and polyfluoroalkyl substances (PFAS) following conversion of oxidizable PFAS into terminal perfluorinated carboxylic acids (PFCAs) in wastewater Influent (INF), Effluent (EFF), Landfill Leachate (LCH), Biosolids (BIOS) and Sludge (SLG) sampled from various Wastewater Treatment Plants (WWTPs) and Landfills across Canada.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 19:17 (UTC)
Created	April 17, 2026, 19:17 (UTC)
contact_email	enviroinfo@ec.gc.ca
contact_person	{"en": "Government of Canada; Environment and Climate Change Canada, 1-800-668-6767, ec.enviroinfo.ec@ec.gc.ca", "fr": "Gouvernement du Canada; Environnement et Changement climatique Canada, 1-800-668-6767, ec.enviroinfo.ec@ec.gc.ca"}
criticality_level	[]
data_dictionary	[]
geographic_scope	["0"]
open_canada_collection	primary
open_canada_date_published	2025-04-30 04:00:00
open_canada_keywords	{"en": ["Waste water", "Wastewater", "Sludge", "Biosolids", "Raw influent", "Primary effluent", "Final effluent", "Primary treatment", "Secondary treatment", "Tertiary treatment", "Advanced treatment", "Trace contaminants", "Total Oxidizable Precursors (TOP) of Perfluoroalkyl and Polyfluoroalkyl Substances"], "fr": ["Eaux usées", "Eaux usées", "Boues", "Biosolides", "L'influent brut", "Effluent primaire", "Effluent final", "Traitement primaire", "Traitement secondaire", "Traitement tertiaire", "Traitement avancé", "Contaminants traces", "Les précurseurs oxydables totaux (POT) des substances perfluoroalkylées et polyfluoroalkylées"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Les précurseurs oxydables totaux (POT) des substances perfluoroalkylées et polyfluoroalkylées dans les systèmes de traitement des eaux usées des municipalités canadiennes
update_frequency	as_needed