The full Malabar System Investment program is a $3 billion ten-year program to be delivered over multiple stages. It will see the upgrading of several facilities and pipelines in the Malabar waste management system.

The delivery of the project has been split into two phases, the near-term program and the medium-term program. The near-term program includes three packages:

Package A

• Delivery of the Glenfield Water Resource Recovery Facility (WRRF) Upgrade and the Liverpool WRRF Upgrade. These upgrades will be undertaken as a single alliance contract estimated to cost between $500 million and $1 billion.

Package B

• Delivery of the Fairfield WRRF and sewage pumping station commissioning. The project will be a fixed-price contract worth between $50 million and $100 million.

Package C

• Delivery of the Western branch submain augmentation including the extension of the Liverpool-Ashfield Pipeline. The project will be a fixed-price contract worth between $50 million and $100 million.

The medium-term program is intended to address forecast capacity constraints beyond 2031. The preferred pathway for the program – as identified in Sydney Water’s 2024 pricing proposal - is the disconnection of the Glenfield and Liverpool WRRFs from the Southern and Western Suburbs Ocean Outfall Sewer and the Malabar WRRF system, and river release.