Thornleigh Pipeline Duplication

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Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with significant growth in the area where the population is expected to increase from 1.6 to 2.04 million by 2031, and 2.26 million by 2046.

We are investing now to transform and integrate our water, wastewater, storm water, and recycled water systems to ensure we can continue to provide safe, reliable and affordable services to customers as the region continues to grow.

One of the ways we are doing this is by duplicating the 1.4 km drinking pipeline between Thornleigh Reservoir (on Quarter Sessions Road) and the Thornleigh-Wahroonga Water Pumping Station (on Dale Close). The proposed pipeline will increase the resilience of local water supply by allowing water to be transferred between the two locations to cater for the growing population.

This is not just about pipes. It's about water - clean, life sustaining water. Our work will ensure we can continue to give you clean and reliable water as the area continues to grow.

Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with significant growth in the area where the population is expected to increase from 1.6 to 2.04 million by 2031, and 2.26 million by 2046.

We are investing now to transform and integrate our water, wastewater, storm water, and recycled water systems to ensure we can continue to provide safe, reliable and affordable services to customers as the region continues to grow.

One of the ways we are doing this is by duplicating the 1.4 km drinking pipeline between Thornleigh Reservoir (on Quarter Sessions Road) and the Thornleigh-Wahroonga Water Pumping Station (on Dale Close). The proposed pipeline will increase the resilience of local water supply by allowing water to be transferred between the two locations to cater for the growing population.

This is not just about pipes. It's about water - clean, life sustaining water. Our work will ensure we can continue to give you clean and reliable water as the area continues to grow.

  • REF exhibition now closed

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    The Review of Environmental Factors (REF) consultation has closed.

    Thank you to everyone who attended a community information session or provided feedback.

    The team will now analyse all submissions and write a Decisions Report. We will provide a community update in the new year. In the meantime, you can get in touch with the community engagement team at thornleighIOM@sydneywater.com.au.

  • Review of Environmental Factors (REF) now on display

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    We have prepared a Review of Environmental Factors (REF) document guided by the Environmental Planning and Assessment Regulation, 2021. The REF looks at all the potential benefits and environmental impacts of the project during construction and also looks ahead to its operational impacts. It includes:

    • the background of the project

    • proposed construction activities, including work locations

    assessment of environmental impacts including:

    • soil impacts related to ground disturbance
    • water impacts related to groundwater extraction and works above/near waterways
    • biodiversity impacts from vegetation disturbance
    • noise and vibration impacts from plant, equipment, and vehicles
    • traffic and access changes.

    The REF also recommends measures to minimise or manage potential impacts during construction and operation of the new pipeline.

    How can I have my say?

    The REF document is on public display from Tuesday 21 November until Monday 18 December.

    During the display period, you are invited to make a written submission by email to thornleighIOM@sydneywater.com.au.

    We will also be hosting two community information sessions where you can meet the project team to find out more.

    Location Address Date Time
    Thornleigh Squash Club 6 Duffy Avenue, Thornleigh, NSW 2120 Wednesday 29 November 2023 4.30pm – 6.30pm
    Normanhurst West Public School 4/10 Dartford Rd, Thornleigh NSW 2120 Tuesday 5 December 2023 5pm - 7pm
Page last updated: 20 Dec 2023, 02:41 PM