Municipal wastewater systems in Canada, 2023
Released: 2025-06-24
Data related to the volumes of wastewater (sewage) processed by municipal wastewater systems in Canada for the year 2023 are now available. Data for the year 2022 have been revised.
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Note to readers
As of 2018, combined sewer overflow volumes from Quebec municipalities are not available, thus estimates for combined sewer overflows and total volumes of untreated wastewater do not include municipal wastewater systems in the province of Quebec.
The target population is composed of municipal wastewater systems in Canada with a flow of 100 cubic metres or more per day, representing a population of approximately 2,000 systems. These estimates exclude systems that service First Nations reserves, government institutions, commercial and industrial establishments, and provincial parks.
Contact information
For more information, or to enquire about the concepts, methods or data quality of this release, contact us (toll-free 1-800-263-1136; 514-283-8300; infostats@statcan.gc.ca) or Media Relations (statcan.mediahotline-ligneinfomedias.statcan@statcan.gc.ca).
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