The work on the sewer main in Arthur Street
The work on the sewer main in Arthur Street

IT’S A LEAK! Sewers start letting off steam

IF YOU see the ground around you letting off a little “steam” over the next few weeks, there’s no need to panic.

In fact, it might actually stop the ground bubbling up at you in the future.

Inflow and infiltration testing of the Clarence Valley sewer system will take place in parts of Maclean and South Grafton during November and December.

Council’s manager of Water Cycle, Greg Mashiah, explained ttesting was carried out by pumping an innocuous smoke-like fog into the sewer lines.

“The fog should come out of the main vent outlet on property roofs,” he said.

“If it comes out of the gutters, storm water drains or emerges from the ground this indicates there may be an issue that needs to be looked at.

“This testing allows us to quickly, easily and safely identify where there are either cracked or damaged pipes, incorrectly installed sewer relief gullies or downpipes that allow storm water to enter the sewer systems.

“The sewage treatment plant runs most efficiently when there are no major spikes in the amount of water entering the system.”

>>> RELATED: Sewer fix an ongoing issue

Council’s water cycle team is able to analyse data after heavy rain events to identify any spikes in the volume of water entering the system. By isolating the pump station where the spike occurs they can focus on any potential problems and make repairs as required.

“Anything we can do to make the system more efficient results in savings for the community,” Mr Mashiah said.

“Properties with infiltration or inflow issues will be advised so they can correct the problem.”

The testing will take place from November 11 with work taking about four weeks to complete. Residents will be informed by letter drops if their home is within the testing area.

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