Wastewater data and reports
This page contains information reported under the Wastewater Systems Effluent Regulations (the Regulations).
Annual reports, data reported, maps and other data and reports done on wastewater in Canada are available on this page.
Annual reports
Annual reports on the Regulations provide a summary of the data reported on Canadian wastewater systems subject to the Regulations. Annual Status Reports are currently available for the years listed below.
Data reported
The Open Government dataset includes the data reported under the Regulations from 2013 to 2024:
- Identification reports - owner, geographic location, treatment types
- Monitoring reports - average CBOD, average suspended solids, volumes deposited
- Acute lethality test results
- Combined sewer overflow points and reports
Access to the wastewater data on Open Government
Wastewater maps
We have created the following maps using the data reported under the Regulations from 2019 to 2021:
Treatment types of the wastewater systems in Canada subject to the Regulations
Submitted effluent quality results under the Regulations
Acute lethality test results from wastewater systems subject to the Regulations
Combined Sewer Overflow volumes from wastewater systems subject to the Regulations
Combined Sewer Overflow points under the Regulations