Sydney Water has invested $6.9 million to upgrade a 2.1 kilometre section of the Canterbury Bankstown Submain, which extends between High Street, Canterbury and Unwin Street, Earlwood.
Sydney Water’s Managing Director Kevin Young said the upgrade is a significant investment which ensures the long term reliability of the system.
“This upgrade will provide an essential and sustainable wastewater service to the community for many years to come,” Mr Young said.
“Work began in March 2011 and required crews to descend to depths of 25 metres below ground to carry out the repairs, which were mostly done at night due to high wastewater flows in the pipe during the day. Night work also ensured a safer working environment for the crews. ”
Crews worked across 14 sites in Earlwood and Canterbury to:
• clean and repair 2108 metres of the 1.8meter diameter wastewater pipe with a PVC liner
• clean and repair 18 maintenance holes with an epoxy protective coating
• clean and line one large maintenance hole with a calcium aluminate cement protective coating
• remove 70 tonnes of silt and debris to increase the capacity and efficiency of the pipe.
The work also included installing stormwater structures, a walking bridge and spillway to contain the stormwater.
Mr Young said “Trenchless technology was used to line the pipe, which significantly reduced the impact on the environment and community.
“I would like to congratulate our contractor, Water Infrastructure Group, who completed the work on time and within budget, achieving outstanding safety results, high levels of customer satisfaction and excellent performance results,” he said.
The Canterbury Bankstown Submain was built between 1919 and 1927, and carries wastewater from Belfield through to Arncliffe and the Malabar Wastewater Treatment Plant.
This work was part of Sydney Water’s SewerFix program, which improves the wastewater system and protects public health and the environment.
To know more, visit sydneywater.com
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