Description

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Municipal wastewater treatment indicator The municipal wastewater treatment indicators measure the level of wastewater treatment provided to the Canadian population and track the compliance of the treated water discharged with the national effluent quality standards. Higher treatment levels of wastewater reduce the risk of raw wastewater pollutants entering the environment, where they pose risks to human health and the environment. This indicator is not a measure of municipalities' compliance with municipal, provincial or federal wastewater regulations or treatment standards. 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 data sources and details on how those data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators

Resources

Name	Format	Description	Link
Proportion of population served by municipal wastewater systems, Canada, 2013 to 2023 – French (CSV; 1.53 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/1-Population-desservie-systemes-traitement-eaux-usees-municipales.csv
Proportion of population served by municipal wastewater systems, Canada, 2013 to 2023 – English (CSV; 1.36 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/1-Population-served-municipal-wastewater-systems.csv
Proportion of population served by municipal wastewater systems by province and territory, Canada, 2023 – French (CSV; 1.67 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/2-Population-desservie-traitement-eaux-usees-municipales-par-province-territoire.csv
Proportion of population served by municipal wastewater systems by province and territory, Canada, 2023 – English (CSV; 1.45 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/2-Population-served-municipal-wastewater-systems-by-province-territory.csv
Proportion of population served by municipal wastewater systems, selected countries, 2023 – French (CSV; 2.32 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/3-Population-desservie-systemes-traitement-eaux-usees-municipales-pays-selectionnes.csv
Proportion of population served by municipal wastewater systems, selected countries, 2023 – English (CSV; 1.90 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/3-Population-served-municipal-wastewater-systems-selected-country.csv
Volume and proportion of municipal wastewater discharged by treatment category, Canada, 2023 – French (CSV; 1.83 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/4-Volume-eaux-usees-rejetees-categorie-traitement.csv
Volume and proportion of municipal wastewater discharged by treatment category, Canada, 2023 – English (CSV; 1.71 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/4-Volume-municipal-wastewater-discharged-treatment-category.csv
Volume and proportion of municipal wastewater discharged by treatment category by province and territory, Canada, 2023 – French (CSV; 2.26 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/5-Volume-eaux-usees-municipales-categorie-traitement-province-territoire.csv
Volume and proportion of municipal wastewater discharged by treatment category by province and territory, Canada, 2023 – English (CSV; 1.87 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/5-Volume-municipal-watewater-treatment-category-province-territory.csv
Percentage of reporting municipal wastewater systems and effluent volume meeting effluent quality regulatory standards, Canada, 2015 to 2023 – French (CSV; 1.61 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/6-Systemes-conformes-normes-qualite-effluents.csv
Percentage of reporting municipal wastewater systems and effluent volume meeting effluent quality regulatory standards, Canada, 2015 to 2023 – English (CSV; 1.32 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/municipal-wastewater-treatment/2025/6-Systems-compliance-effluent-quality-standards.csv
Municipal wastewater treatment – English	HTML		https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/municipal-wastewater-treatment.html
Data sources and methods – English	HTML		https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/municipal-wastewater-treatment.html#DSM
Municipal wastewater treatment – French	HTML		https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/traitement-eaux-usees-municipales.html
Data sources and methods – French	HTML		https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/traitement-eaux-usees-municipales.html#DSM

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