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Lower South Creek Treatment Program

Upgrading existing wastewater infrastructure to meet the needs of a rapidly growing community

  • $450M

    Total Project Value

  • 42%

    Less Emissions

  • 3

    Treatment Plants

  • Sydney, New South Wales

    Sydney, New South Wales

Such significant population growth requires equally significant planning and design.

An additional half-a-million people are expected to enjoy life in leafy north-west Sydney by 2040.

The Lower South Creek Treatment Program (LSCTP) is an upgrade to three of Sydney Water’s major inland wastewater treatment plants—Riverstone, St Marys and Quakers Hill—to cater for this population boom and to protect the region’s much-loved waterways. 

We were engaged to provide the engineering development and design at all three sites: implementing mechanical primary screens for treatment at each, and an ingenious Aerobic Granular Sludge procedure for the secondary treatment at Quakers Hill. In addition, our ‘best-of-breed’ designs at two sites provide Sydney Water with the flexibility to adopt and alter them, if required, for use elsewhere.

Throughout delivery, we also developed the Building Information Management (BIM) tools, drawing on our detailed knowledge to aid construction through the development of material take off and quantities, and identify cost savings such as combining multiple structures into one and re-routing a storm bypass pipeline.

The result? Sustainable, cost-efficient and effective wastewater treatment plants that will continue to benefit the community and the environment. 

At a Glance

2019 Excellent Design Rating, Infrastructure Sustainability Council of Australia
Meet Our Team

Cameron Staib, Market Leader—Treatment, Australia

I understand our clients’ organisations and roles and use my expertise to provide services and solutions that support their success.
Cameron Staib Market Leader—Treatment, Australia Read More

Paul Kersey, Business Centre Operating Lead

It gives me a real sense of purpose to help clients plan and implement their water projects for new communities or to enhance existing ones.
Paul Kersey Business Centre Operating Lead Read More

Maz Mahzari, Group Leader, Dams and Hydropower

I wake up every day with motivation to help others experience a better quality of life. Through my work I help create healthier societies.
Maz Mahzari Group Leader, Dams and Hydropower Read More

Cameron Staib

Market Leader—Treatment, Australia

Paul Kersey

Business Centre Operating Lead

Maz Mahzari

Group Leader, Dams and Hydropower

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