Smoke tests to detect sewerage issues start this month

Smoke testing will begin this month in Hervey Bay, Maryborough and Burrum Heads to help identify the sources of stormwater and groundwater leaking into the sewerage network.

Fraser Coast Regional Council Water and Waste Services Director Mark Vanner said leaks can allow groundwater to enter the sewerage system while illegal pipe connections can channel stormwater from roofs into the sewerage system.

“During storms, the amount of sewerage heading into the treatment plant can be more than five times normal dry weather flows,” he said.

“That extra water has to be treated which costs ratepayers money.  It can also cause the treatment plants to overload, which can negatively impact the environment.”

Smoke testing works by injecting a non-toxic, non-staining, odourless coloured smoke into the sewers.

“We can see faults that need fixing when the smoke escapes from the cracks in pipes or incorrectly installed stormwater drains,” Mr Vanner said.

“Smoke may emerge from yards, roof gutters, pipes or street drains.  It is also possible that smoke may appear inside a house if the drainage traps are dry.

“The smoke is not flammable and will not cause any harm to people, pets or plants.”

Mr Vanner said that discovering properties with illegal connections would not necessarily mean fines would be issued.

“Our experience is that once made aware of issues, most property owners comply with the request to rectify problems,” he said.

Residents will be notified by mail of the timing of inspections in their area.

The inspection program starts this month and is due to be completed by April 2024.