Ryde to Pymble Pipeline Upgrade

Customer:   Sydney Water

Contract:  Design & Construct

Location: Sydney, New South Wales  

Water & Wastewater Solutions Australia

Fast Facts: 

  • New DN900 watermain
  • 10.2 km trenched construction
  • 800 m trenchless crossing under national park

In joint venture with Gamuda Australia, we have has been awarded Sydney Water’s Ryde to Pymble pipeline upgrade project.

The project involves the design and construction of approximately 11 km of DN900 watermain from Ryde Pump Station to Wahroonga Reservoir, reinstating a critical watermain first built in 1936.

We will use a mix of open trenching (10.2 km) and trenchless methods (800 m) to minimise environmental and community impacts across Sydney’s suburbs.

Early works - including environmental investigations and detailed design - will begin in early 2026, with the project expected to be completed in 2028.

Once complete, the Ryde to Pymble pipeline will strengthen Sydney’s water network and boost support for the Ryde and Prospect North systems, which supplies more than 1.6 million people across Sydney.