Perfluorooctane sulfonate in fish and water – Perfluorooctane sulfonate concentrations in lake trout from Lake Ontario

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Perfluorooctane sulfonate in fish and water indicators provide information on the presence of perfluorooctane sulfonate (PFOS) in the environment and indications of the progress of strategies and policies to reduce or control their occurrence in the environment. These indicators identify the drainage regions where concentrations are below or above the Federal Environmental Quality Guidelines for PFOS in fish and water. Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated.

Supplemental Information

Canadian Environmental Sustainability Indicators - Home page:

https://www.canada.ca/environmental-indicators

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 20:54 (UTC)
Created	April 17, 2026, 20:54 (UTC)
contact_email	open-ouvert@tbs-sct.gc.ca
contact_person	{}
criticality_level	[]
data_dictionary	[]
geographic_scope	[]
open_canada_collection	primary
open_canada_date_published	2019-01-30 00:00:00
open_canada_keywords	{"fr": ["Indicateur environnemental", "Qualité de l'eau", "Poisson", "indicateurs environnementaux", "indicateur environnemental", "eau", "qualité de l'eau", "pressions sur la qualité de l'eau", "pollutiond'eau", "poissons", "tissus des poissons", "chimiques", "sulfonate de perfluorooctane", "SPFO", "Recommandations fédérales pour la qualitéde l'environnement", "polluant organique persistant", "régions de drainage", "provisoires relatives au régime alimentaire de lafaune", "lac Ontario", "touladi", "Eau", "Nature et biodiversité - contaminants", "Eau - qualité"], "en": ["Environmental indicators", "Water quality", "Fish", "environmental indicators", "water", "water quality", "pressures on water quality", "water pollution", "fish", "fish tissue", "chemicals", "PFOS", "perfluorooctane sulfonate", "Federal Environmental Quality Guidelines", "persistent organic pollutant", "drainage regions", "wildlife diet guidelines", "Lake Ontario", "lake trout", "Water", "Nature and Biodiversity - Contaminants", "Water - Quality"]}
open_canada_subject	["nature_and_environment", "society_and_culture"]
sensitivity_level	unrestricted
title_fr	Sulfonate de perfluorooctane dans les poissons et l'eau – Concentrations de sulfonate de perfluorooctane chez le touladi dulac Ontario
update_frequency	as_needed