Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs
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Water section
Domestic, community, and municipal wastewater
The tolerance measures regarding compliance with certain obligations in the Regulation respecting municipal wastewater treatment works that were implemented during the COVID-19 pandemic ended on May 1, 2022.
Domestic wastewater is water from toilets, as well as greywater (water from kitchens, baths, washing machines, and certain household appliances other than a toilet). In the case of community or municipal sewage systems, industrial waste may be included. It is vital that this water be properly managed in order to protect public health, preserve our waterways, and provide a clean environment for future generations.
This section contains information concerning domestic wastewater management for community, municipal, and individual projects generating more than 3,240 liters of domestic wastewater every day.
- Laws and regulations
- Project authorizations
- Ministerial positions
- Information sheets
- Guidance manuals
- Municipal depollution attestations
-
Municipal wastewater treatment plant monitoring system (SOMAEU)
User guides (French)
-
Operation and monitoring of municipal wastewater
treatment works (French)
- New technologies
- Useful publications and references
Laws and regulations
- Environment Quality Act (EQA)
- Regulation respecting the regulatory scheme applying to activities on the basis of their environmental impact (REAFIE) (French)
- Regulation for municipal wastewater treatment works
- Regulation respecting private waterworks and sewer services (French)
Project authorizations
- Authorization request form (French)
- Compliance Report (French)
- General requirements for domestic wastewater treatment projects (French,
PDF, 264 KB) - Environmental monitoring of domestic wastewater treatment facilities (French, PDF, 252 KB)
- Use of wastewater technical data sheets as part of the authorization process (French, PDF, 202 KB)
Ministerial positions
- Wastewater overflows and bypasses (French)
- Guide to managing wastewater overflows and bypasses (French, PDF, 9,3 MB) - Section 3.1
- Guide to managing wastewater overflows and bypasses (French,
- Performance standards of the Canada-wide Strategy for the Management of Municipal Wastewater Effluent
- Disinfecting treated wastewater (French)
- Reduction of phosphorus in domestic wastewater discharge (French)
Information sheets
- Contents of the action plan to comply with section 29 of the Regulation respecting municipal wastewater treatment works
(French, PDF, 229 KB)
- Specific rules for the authorization of tertiary-level sewage treatment systems using ultraviolet (UV) disinfection for projects in excess of 3240 l/day
(French, PDF, 32
KB)
-
Acceptability assessment approach for non-domestic wastewater discharge into a municipal sewer system (French, PDF, 782 KB)
- Authorization to
extend municipal sewers in case of non-compliance with environmental
requirements or water treatment plant nominal capacity overage
(French, PDF,
29
KB)
-
Acute municipal effluent toxicity—relationship between the concentration of ammoniacal nitrogen in municipal effluent and toxicity for trout
(French, PDF, 270
KB)
- Remediation plan when an acute toxicity trial result in municipal water treatment plant effluent is positive
(French, PDF,
161
KB)
Guidance manuals
- Directive 004 - Sewer Systems
- Conventional Domestic Wastewater Treatment Technologies: Study Guide - Preliminary version (French)
- Guide to managing wastewater overflows and bypasses (French)
- Guide to setting discharge standards for wastewater treatment works
(French, PDF,
835
KB)
-
Guide to Ministère’s environmental requirements regarding temporary work camps
(French,
PDF,
269 KB)
- Other guides of interest
- Application limits of the “Remontée” program
(French,
PDF,
30 KB)
Municipal depollution attestations
Municipal wastewater treatment plant monitoring system (SOMAEU)
(French)
Operation and monitoring of municipal
wastewater treatment works (French)
New technologies
- Evaluation procedure for new domestic wastewater treatment technologies
- Development support for new domestic wastewater treatment technologies (French)
Validation sheets
Technology fact sheets on domestic wastewater treatment technologies
(French) (Now hosted on the Bureau de
normalisation du Québec website)
Recommendation sheets
Recommendation data sheet for the treatment of domestic wastewater (French)
Information sheets
- Reclassification of a new technology in the Conventional Domestic Wastewater Treatment Technologies
(French,
PDF, 238
KB)
Useful publications and references
-
Water Atlas – Municipal (French)
- Bulletin Eaux3 municipales (French)
- Québec soil surveys
- Correlation between rainfall and frequency of municipal
sewer network overflow structure spillover (INRS-Eau, Terre
et Environnement report)
- Statistical analysis
(French,
PDF, 736 KB)
- Statistical analysis
(French,
