Prospect South to Macarthur (ProMac)

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Under the ProMac project we are building new drinking water pipelines and infrastructure between Prospect South and Macarthur as part of Sydney Water's long-term plan to increase resilience in our network and to extend the city’s water capacity and supply.

ProMac will upgrade our existing water reservoirs at Liverpool and Cecil Park as well as build two new reservoirs at Oran Park. This will allow for an extra 100 Megalitres of additional reservoir capacity in Western Sydney. That’s the equivalent of about 50 Olympic-sized swimming pools!

We’re also building 15 km of additional pipework, three pumping stations and upgrading our existing network to ensure growing communities in South Western Sydney have access to clean drinking water even during the hottest and driest days.

Sydney Water is investing in new infrastructure that will not only support the growing, dynamic South Western Sydney but also meet the challenges of a changing climate.

ProMac will help Sydney Water deliver on its vision of creating a better life with world-class water services.

Under the ProMac project we are building new drinking water pipelines and infrastructure between Prospect South and Macarthur as part of Sydney Water's long-term plan to increase resilience in our network and to extend the city’s water capacity and supply.

ProMac will upgrade our existing water reservoirs at Liverpool and Cecil Park as well as build two new reservoirs at Oran Park. This will allow for an extra 100 Megalitres of additional reservoir capacity in Western Sydney. That’s the equivalent of about 50 Olympic-sized swimming pools!

We’re also building 15 km of additional pipework, three pumping stations and upgrading our existing network to ensure growing communities in South Western Sydney have access to clean drinking water even during the hottest and driest days.

Sydney Water is investing in new infrastructure that will not only support the growing, dynamic South Western Sydney but also meet the challenges of a changing climate.

ProMac will help Sydney Water deliver on its vision of creating a better life with world-class water services.

Q. What infrastructure is required for the ProMac project ?

The following existing infrastructure will be utilised:

  • Pipeline between Prospect WFP and Liverpool
  • Reservoir at Liverpool 
  • Reservoir at Cecil Park 
  • Pipeline along the Northern Road
  • Pipeline from Oran Park to Narellan South
  • Reservoir at Narellan South
  • Pipeline between Narellan South and Sugarloaf Water Pumping Station
  • Pipeline between Sugarloaf Water Pumping Station and Campbelltown
  • Reservoir at Campbelltown
  • Pipeline between Sugarloaf Water Pumping Station and Macarthur WFP
  • Reservoirs/Clearwater Tanks at Macarthur WFP
  • Pipeline between Macarthur WFP and Appin
  • Reservoir at Appin
  • Pipeline between Appin and Milton
  • Carnes Hill Reservoir
  • Raby Reservoir

The following new infrastructure is being constructed for this project:

  • Upgrade to existing pumping station at Prospect WFP
  • New reservoir at Liverpool
  • New pumping station at Liverpool reservoir
  • New pipeline between Liverpool reservoir and Cecil Park reservoir
  • New pipeline between Cecil Park reservoir and Oran Park reservoir (through Kemps Creek)
  • New reservoirs at Oran Park
  • New water pumping station at Oran Park
  • Duplication of existing pipeline between Narellan South and Sugarloaf Water pumping station (through Australian Botanic Gardens)
  • Upgrade to existing pumping station at Sugarloaf
  • New water pumping station at Carnes Hill
  • Upgrades to Macarthur Water Filtration Plant
  • Minor network modifications
  • Water chlorination facilities
  • Electrical upgrades to supply power to the new infrastructure

Q. What area does the ProMac supply?

In addition to improving service to existing customers, the project will support growth in South West Sydney Growth Area, Western Sydney Aerotropolis, Liverpool CBD and Menangle Park.

Q. What’s the current state?

Currently, Sydney’s Macarthur-Camden area is supplied by water from the Metro Dams and Warragamba Dam.

Kemps Creek, Bringelly, and Rossmore areas currently have very minimal water infrastructure including tanks, rainwater, and farm-dam water.
The additional infrastructure will provide more storage capacity for drinking water to support growth and development within these areas, manage supply and account for future growth.


Q. How will you be engaging the community?

We have been actively engaging with key stakeholders including Local Councils, Roads and Maritime Services, major developers, utility authorities and private property owners.  We have been doing so from a growth perspective. We will continue to engage with the community as the project progresses. 


Q. How are you working with other agencies to ensure this is delivered on time and on budget?

We have engaged with Local Councils, Roads and Maritime Services, Endeavor Energy, Western Sydney Parklands Trust and Water NSW to ensure that the project is coordinated with other activities and infrastructure projects. 


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