Crews using ‘smoke’ in north Lethbridge investigation

The City of Lethbridge Water and Wastewater team is performing ‘smoke’ testing in the 200 Block of Mayor Magrath Drive North. The testing will begin on May 29, 2024, at 8:30 a.m.

The investigation is to determine the cause of reported foul odours in the area. ‘Smoke’ will be pumped into the underground sewer system. Where it emerges will show how sewer gases are travelling underground in the neighbourhood. The chemical used to create the ‘smoke’ is non-toxic, odourless and white to grey in colour. It does not cause staining or create a fire hazard. It is similar to what is seen at a rock concert or drama production.

During the investigation, community members may notice the ‘smoke’ coming out of neighbourhood manholes. It may also be seen exiting plumbing stacks on residential and commercial rooftops. Work crews will monitor the neighbourhood for the duration of the investigation.

Due to the nature of the work, wind or rain may result in the postponement of the investigation.

Motorists are asked to drive with caution in the area and follow posted detours.

For Public Inquiries:

Call 311 | Monday to Friday, 8 a.m. to 4:30 p.m.