The ageing pipes are at risk of backflow if stormwater makes its way into the sewer through cracks or tree root damage, or if downpipes are connected to the sewerage system in error.

Orange councillor Reg Kidd said $700,000 had been budgeted to help with the upgrades.

“We’re using new technology where we put worms through the pipes with cameras on them and they can pick up any problems,” he said.

“We also push steam through the pipes and this picks up any leaks.”

Cr Kidd said advanced technology also allowed the pipes to be repaired while still underground.

“It’s much more efficient and effective this way,” he said.

“The work is part of ongoing maintenance and it will be done far quicker than it used to be.”

Initially work will concentrate on replacing or repairing pipes in Sampson, Byng, Moulder, Kite, and Anson Streets.

Low-lying parts of town are more susceptible to stormwater entering the sewer, with alarms in the sewerage system designed to alert the council if the water level rises.

tracey.prisk@fairfaxmedia.com.au