North West Treatment Hub

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There’s a new approach to the way we treat wastewater in Sydney’s North West. As a rapidly growing area of Sydney, we want to make sure we’re ready to continue to provide a reliable service as well as play our part in helping to grow the already vibrant communities in the area.

That’s why we’re creating a North West Treatment Hub, which will link the three plants in the area – Castle Hill Water Recycling Plant, Rouse Hill Water Recycling Plant and Riverstone Wastewater Treatment Plant. This will enable us to provide a more flexible and efficient regional-level wastewater treatment system in Sydney’s North West.

There’s a new approach to the way we treat wastewater in Sydney’s North West. As a rapidly growing area of Sydney, we want to make sure we’re ready to continue to provide a reliable service as well as play our part in helping to grow the already vibrant communities in the area.

That’s why we’re creating a North West Treatment Hub, which will link the three plants in the area – Castle Hill Water Recycling Plant, Rouse Hill Water Recycling Plant and Riverstone Wastewater Treatment Plant. This will enable us to provide a more flexible and efficient regional-level wastewater treatment system in Sydney’s North West.

  • Decision Report now available

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    6 months ago

    Sydney Water has released its Decision Report on Phase 1 of the North West Treatment Hub project.

    The Decision Report responds to the four submissions we received during the public display of the Review of Environmental Factors (REF). The submissions raised issues about noise and vibration, odour and visual impact for the proposed Castle Hill WRP works and environmental performance of the WRPs.

    Further detailed planning and investigation has occurred since the exhibition of the REF and has resulted in several changes to the project. This includes a reduction in the scope of works at Castle Hill WRP, which is...

    Sydney Water has released its Decision Report on Phase 1 of the North West Treatment Hub project.

    The Decision Report responds to the four submissions we received during the public display of the Review of Environmental Factors (REF). The submissions raised issues about noise and vibration, odour and visual impact for the proposed Castle Hill WRP works and environmental performance of the WRPs.

    Further detailed planning and investigation has occurred since the exhibition of the REF and has resulted in several changes to the project. This includes a reduction in the scope of works at Castle Hill WRP, which is outlined in the Decision Report.

    However, changes to the transfer main from Rouse Hill WRP will be subject to a separate environmental assessment (addendum to the original REF). This Addendum REF will be complete around April 2020 and will be posted online.

    Outcomes summary for Castle Hill WRP

    • Noise and vibration - the scope of works at Castle Hill WRP has now been reduced substantially. Works would be confined to standard daytime construction hours and noise impacts are now expected to be minor.
    • Air quality and emissions - the reduced scope means that there will be no new odour source installed at the Castle Hill WRP. Measures, such as planned cover replacements, are expected to improve the current odour impact from the WRP.
    • Visual impacts - due to the reduced scope of the project, there will be no new ventilation shaft installed at Castle Hill WRP.

    To learn more, access the full Decision Report here.

  • What the REF found

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    over 1 year ago

    Sydney Water has assessed how this project will impact the environment and local community.

    The assessment, or Review of Environmental Factors (REF), found:

    • The potential for environmental impacts is low because most of the work will be occurring with the boundaries of the Rouse Hill Water Recycling Plant and Castle Hill Water Recycling Plant.
    • The upgrade will improve the quality of recycled water discharged from the plants.
    • There will be typical construction impacts such as additional traffic and noise. We will put measures in place to minimise these.
    • Extended work hours are proposed. Work will occur at the plants from...

    Sydney Water has assessed how this project will impact the environment and local community.

    The assessment, or Review of Environmental Factors (REF), found:

    • The potential for environmental impacts is low because most of the work will be occurring with the boundaries of the Rouse Hill Water Recycling Plant and Castle Hill Water Recycling Plant.
    • The upgrade will improve the quality of recycled water discharged from the plants.
    • There will be typical construction impacts such as additional traffic and noise. We will put measures in place to minimise these.
    • Extended work hours are proposed. Work will occur at the plants from 6 am to 6 pm on weekdays and 7 am to 4 pm on Saturdays. No noisy work is permitted to occur prior to 7 am on weekdays and on Saturdays, prior to 8 am and after 1 pm.
    • Vegetation and tree removal will be required as a part of this work. Safeguards will be in place to minimise flora and fauna impacts.
    • Potential odour impacts on the surrounding community will not increase as a result of this work.
    • We are committed to keeping the community and stakeholders informed throughout this project.
  • What we're planning to do at Rouse Hill and Castle Hill

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    over 1 year ago

    We're planning on improving the Water Recycling Plants (WRPs) at Rouse Hill and Castle Hill to enable a portion of the wastewater that enters the plants to be transferred to Riverstone Wastewater Treatment Plant (WWTP).

    This will ensure a more efficient regional-level treatment system that will provide the flexibility needed to service a rapidly growing area.

    For more information on what we are planning to do at each of the plants, go to the Review of Environmental Factos

    We're planning on improving the Water Recycling Plants (WRPs) at Rouse Hill and Castle Hill to enable a portion of the wastewater that enters the plants to be transferred to Riverstone Wastewater Treatment Plant (WWTP).

    This will ensure a more efficient regional-level treatment system that will provide the flexibility needed to service a rapidly growing area.

    For more information on what we are planning to do at each of the plants, go to the Review of Environmental Factos