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There will be smoke coming out of sewer holes next week

Starting Nov. 11 the City of Guelph will be testing sewers for approximately four weeks
2018-05-28 manhole cover sewer
Stock image

Don’t be alarmed if you see smoke coming from maintenance sewer holes in a few days.

The city will be conducting sanitary smoke testing on Nov 11 for approximately four weeks on weekdays between 8 a.m. and 5 p.m.

The tests will determine if rainwater is infiltrating through the sanitary sewers through cracks and holes to help the city identify if any repairs are needed.  

The city has stated that the smoke is harmless coloured vapour with no odour and poses no concern to one’s health.

Residents and businesses around the area will be notified about where the testing will take place and what to expect from the tests in advance. 

There may also be partial closures of arterial and collector roads and pedestrian sidewalks in the smoke test area.

This is what to expect: (from City of Guelph website)

  • Residents in the smoke testing area may see smoke coming out of street maintenance holes, the sewer plumbing stack at the top of houses, or exiting stormwater catch basins and roof downspouts at the side of houses. Guelph Fire Services has been notified. If you smell or see smoke and are unsure of its source, please contact 911.

  • Residents in affected areas are asked to ensure all plumbing traps under sinks, washing machines and floor drains have water in them. When you receive notice from the City, please pour water down basement floor drains, all sinks, showers and other plumbing fixtures to help reduce instances of smoke entering your house.

  • If smoke enters your home, pour some water down the drain and open your windows for ventilation. Smoke will quickly disappear in a few minutes and isn’t harmful to your health. If you do experience irritation, please leave the area until the smoke has disappeared. If you have any health concerns, please contact your healthcare provider.