Apply for a permit to carry out temporary work causing a discharge of pollutants into the air or of water into a sewer

Is your company planning to carry out occasional work that may emit pollutants into the atmosphere or require a discharge into the sewer, with or without treatment? Before starting the work, you must get a permit and meet certain requirements. Find out everything you need to know.

In accordance with city by-laws, a permit is required for any work that may involve a water discharge into the municipal sewer system. 

A permit is also required for all general work or construction worksites that may generate airborne pollution. The requirement also applies to the following: 

  • surface cleaning, stripping, restoration or finishing
  • crushing
  • asbestos removal

Online application

Create an organizational profile linked to My account. 

Fill out and upload the form and attach the required documents.

Last updated December 16, 2025