Wastewater Pipeline Duplication in Rockingham

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To help cater for expected growth and increase in wastewater flows we are installing a new 3.8km treated wastewater pipeline next to an existing pipeline in the City of Rockingham.

The pipeline, referred to as the Sepia Depression Ocean Outlet Landline (SDOOL), transports treated water from several wastewater treatment plants in the metropolitan area and other industries to the ocean outfall offshore from Point Peron.

We have now completed the pipeline installation and have been working with the City of Rockingham on a plan to rehabilitate the area. This reinstatement is now underway and should be completed by the end of March 2021.

Find out more information on the project on our webpage.

Who can I contact?

For more information, please contact Amy Wright, Senior Advisor Community Engagement at Amy.Wright@watercorporation.com.au on phone (08) 9420 2130.




To help cater for expected growth and increase in wastewater flows we are installing a new 3.8km treated wastewater pipeline next to an existing pipeline in the City of Rockingham.

The pipeline, referred to as the Sepia Depression Ocean Outlet Landline (SDOOL), transports treated water from several wastewater treatment plants in the metropolitan area and other industries to the ocean outfall offshore from Point Peron.

We have now completed the pipeline installation and have been working with the City of Rockingham on a plan to rehabilitate the area. This reinstatement is now underway and should be completed by the end of March 2021.

Find out more information on the project on our webpage.

Who can I contact?

For more information, please contact Amy Wright, Senior Advisor Community Engagement at Amy.Wright@watercorporation.com.au on phone (08) 9420 2130.



  • Reinstatement underway

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    Now the construction is complete, the contractor is coordinating reinstatement of the area.

    Here is a brief update of the actions planned and in progress:

    • Limestone wall works underway, one last wall to be completed at Ritchie Drive.
    • Concrete footpaths to be completed by mid-February.
    • The area from Ritchie Drive to Bay View Street has several access chambers. The reinstatement will involve landscaping to reduce the visibility and avoid any trip hazards.
    • Trees and other planting to commence mid to late February.
    • The lawn around the basketball courts at Broughton Way Reserve is being restored.
    • Laying of the lawn along Lake Street commenced the week beginning 25 January. This should take around three weeks and be completed by mid-February.
    • Temporary irrigation, fencing and new lawn is been installed along Lake Street, near Lake Richmond. Once the planting is complete fencing will stay up until the lawn has been irrigated for six weeks. This is an agreed approach with the City of Rockingham to allow the lawn time to establish.


    All reinstatement work should be completed by the end of March 2021.