Municipal Wastewater Systems in Canada (MWSC)

Summary of changes

Activity on this program started: 2013

Reference period of change - 2024

Please note that this is the final release of the survey on Municipal Wastewater systems in Canada. Input data will continue to be collected by Environment and Climate Change Canada, as required under the Wastewater Systems Effluent Regulations, and published through the Wastewater Systems Effluent Regulations Reported Data page on the Open Government Portal (https://open.canada.ca/data/en/dataset/9e11e114-ef0d-4814-8d93-24af23716489). To learn how the agency is adapting to continue delivering quality data Canadians rely on, visit Delivering trusted data through change (https://www.statcan.gc.ca/en/trust/delivering-trusted-data).

Reference period of change - 2018-2020

May 2023
As of 2018, no combined sewer overflow volumes from Quebec municipalities are available.

Tables 38-100124 and 38-100125 have been updated to include estimates at the drainage region level.