[WATER OUR FOCUS]

Rouse Hill Wastewater Transfer Main

Delivering critical gravity sewer infrastructure to support capacity relief between the Rouse Hill and Riverstone wastewater treatment systems.
Confluence Water
Rouse Hill – Riverstone Network, New South Wales

840m Gravity Sewer Pipeline + Manhole Construction

[Project Background]

Supporting Wastewater Capacity in a Rapid Growth Corridor

Rapid population growth along the Metro Northwest corridor placed increasing demand on the Rouse Hill Water Recycling Plant, pushing the facility toward its treatment capacity limits. To provide temporary capacity relief while long-term upgrades were planned, Sydney Water initiated the installation of a transfer pipeline to divert excess sewage to the Riverstone Wastewater Treatment Plant.

Delivered for Confluence Water, the project formed a critical component of Sydney Water’s strategy to maintain reliable wastewater services across the rapidly expanding corridor.

[Scope Of Works]
Operating in Sensitive and Live environments

Construction of gravity wastewater infrastructure supporting increased treatment capacity across the Metro Northwest growth corridor.

Installation of approximately 840m of DN375–DN450 GRP gravity sewer pipelines
Construction of 10 cast in-situ DN1200 maintenance holes and discharge structures
Open trench excavation up to 6 metres deep within active development areas
Testing, commissioning, and restoration to Sydney Water standards
Project Technical Snapshot

Installation of a gravity wastewater transfer main connecting the Rouse Hill and Riverstone sewer networks.

840m Wastewater Transfer Main
840m Wastewater Transfer Main
Pipe Diameter
DN375 – DN450 GRP
Manholes Constructed
10 Cast-in-situ DN1200 Manholes
[Outcome / Key Features]
Delivered Critical Wastewater Transfer Infrastructure
Outcome
  • Installation of 840 metres of GRP gravity sewer pipeline (DN375–DN450)
  • Construction of 10 cast-in-situ DN1200 maintenance holes including discharge chamber
  • Pipeline installed via open-cut trenching up to 6 metres deep
  • Connection of new pipeline to existing developer manhole at chainage 0.00
  • Testing and commissioning completed to Sydney Water standards
Key Features
  • Delivered for Confluence Water under NEC4 Option C contract framework
  • Detailed service locating and utility coordination prior to excavation works
  • Benched excavations implemented to maintain safe access and egress for deep trench works
  • Active stakeholder engagement ensuring no community complaints during construction
  • Full restoration of construction areas to Sydney Water specifications
[Environmental Responsibility]
No items found.
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