Although the new wastewater discharge standards set forth by By-law 2008-47 of the Montréal Metropolitan Community (MMC) will only come into force on January 1, 2012, the By-law does impose certain obligations that must be complied with prior to that date. The By-law entitled Règlement numéro 2008-47 sur l'assainissement des eaux applies to all municipalities within the territory of the MMC and provides that designated industrial facilities must inform the municipality of the nature of their wastewater discharges to the sewer system where: they discharge more than 10,000 cubic meters per year; or, if the discharged volume is less than 10,000 cubic meters per year, the wastewater discharged contains one or more of the contaminants designated by the By-law such as heavy metals, cyanide, fluoride, mineral oil and greases or PCBs.

The designated industrial facilities are required to characterize their wastewater before April 30, 2010. The wastewater characterization report must also be attested by a "competent person" (such as a member of the Québec Order of Engineers, Order of Chemists or Order of professional technologists) and be submitted to the municipality where the industrial facility is located within 180 days following the date of the sampling. Further, the industrial facility is required to submit a corrective plan to the municipality if the characterization results do not meet the applicable standards. A new facility will, within six months after a new establishment begins its operation, be required to perform a wastewater characterization and submit the results to the municipality. A new characterization is also required if an industrial facility significantly changes the nature or the level of its production or if the characteristics of its wastewater were to change. Sample analyses must be performed by a laboratory certified by the Ministry of Sustainable Development, Environment and Parks.