Smoke testing is a cost-effective method of identifying possible issues within the sanitary sewer system. The vapor test results are used to pinpoint areas of the sewers which may require further investigation or immediate repairs. The results also help locate leaking manholes, structural issues such as cracks, improper sewer connections, and private-side sources of inflow and infiltration.
The 2023 sanitary smoke testing project is managed by the RMOW and administered by ISL Engineering and Land Services. The subcontractor performing the operational works is Mar-tech Underground Services Ltd. The smoke testing is scheduled to take place from June 30, 2023.
Neighborhoods scheduled for testing
During smoke testing, field crews blow air and smoke into the sanitary sewer system in the street and monitor where smoke escapes the system. The smoke under pressure will fill the main line as well as any connections and then follow the path of any leak to the ground surface, quickly revealing the source of the problem.
For instance, if smoke permeates up through the ground, it indicates breaks in the sewer line. Only enough force to overcome atmospheric pressure is required and smoke should escape from building roof vents.
The smoke should not enter your home from the sanitary sewer lines if your sink and drain traps contain water. If smoke does enter your home, this is an indication that sewer vapors also have the potential to enter your home and minor corrections may be needed to your plumbing.