Regulations, agreements, pollution, management and contacts.
Services and information
Regulations and reporting
Guidance, reports, timeline and information for owners and operators.
Frequently asked questions
Purpose, key elements, Canadian businesses, implementation.
Administrative agreements and equivalency.
Source and effect on ecosystems, health and environment.
Registry of transitional authorizations
List of transitional authorizations issued under the WSER.
Consultations on wastewater
Environment and Climate Change Canada (ECCC) consultation on proposal to amend Wastewater Systems Effluent Regulations related to transitional and temporary authorizations.
Contact information for the Wastewater Program.
Wastewater regulations overview
Wastewater systems effluent regulations, bilateral agreements, frequently asked questions.
Untreated wastewater in the St. Lawrence River
Comprehensive review of events leading to discharge of untreated wastewater into the St. Lawrence.
Wastewater data and annual reports
This page links to WSER annual reports and reported data
What we are doing
Laws and regulations
Report a problem or mistake on this page
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