Huntfield Heights to Noarlunga Downs: Brodie Road, River Road

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Upgrading our wastewater network in Onkaparinga Heights

We’re upgrading wastewater infrastructure in Noarlunga Downs, Huntfield Heights and Onkaparinga Heights to support reliable services for current and future customers.

In May 2025, installation will begin on a new gravity‑fed wastewater main. The alignment includes three sections, each crossing Main South Road via micro‑tunnelling.

This infrastructure will service and enable development of approximately 3,000 new residential allotments in Onkaparinga Heights.

Completion is expected by Mid 2027, providing increased network capacity to support future development.

Where we’re working
(See map below for details)

  • River Road, Noarlunga Downs
  • Patapinda Road, Onkaparinga Heights
  • Adel Circuit, Huntfield Heights
  • Brodie Road, Huntfield Heights

What to expect

  • changed traffic arrangements will be in place throughout the area until late-2026
  • work may take place during the day, at night or on weekends to help maintain schedule and minimise disruption
  • you may notice some noise, vibration and dust during construction
  • we’ll continue working closely with the community to minimise impacts wherever possible
  • If you're directly affected, we’ll provide advance notice and work closely with residents, businesses, and road users before and during construction.

Please note: Timeline dates are subject to change based on program requirements and weather conditions.

What happens to roads and footpaths after our works?

We work closely with the local council and follow all required reinstatement obligations, reinstating the parts of the road, footpath or the environment directly impacted by our works.

Find out more about reinstatement

Go back to project home page

Need more information?

Visit our FAQs page for answers to the most asked questions.

Upgrading our wastewater network in Onkaparinga Heights

We’re upgrading wastewater infrastructure in Noarlunga Downs, Huntfield Heights and Onkaparinga Heights to support reliable services for current and future customers.

In May 2025, installation will begin on a new gravity‑fed wastewater main. The alignment includes three sections, each crossing Main South Road via micro‑tunnelling.

This infrastructure will service and enable development of approximately 3,000 new residential allotments in Onkaparinga Heights.

Completion is expected by Mid 2027, providing increased network capacity to support future development.

Where we’re working
(See map below for details)

  • River Road, Noarlunga Downs
  • Patapinda Road, Onkaparinga Heights
  • Adel Circuit, Huntfield Heights
  • Brodie Road, Huntfield Heights

What to expect

  • changed traffic arrangements will be in place throughout the area until late-2026
  • work may take place during the day, at night or on weekends to help maintain schedule and minimise disruption
  • you may notice some noise, vibration and dust during construction
  • we’ll continue working closely with the community to minimise impacts wherever possible
  • If you're directly affected, we’ll provide advance notice and work closely with residents, businesses, and road users before and during construction.

Please note: Timeline dates are subject to change based on program requirements and weather conditions.

What happens to roads and footpaths after our works?

We work closely with the local council and follow all required reinstatement obligations, reinstating the parts of the road, footpath or the environment directly impacted by our works.

Find out more about reinstatement

Go back to project home page

Need more information?

Visit our FAQs page for answers to the most asked questions.

  • Traffic changes - Serafino Drive, Noarlunga Downs

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    When: Monday 29 June to early August

    Where: Serafino Drive at the intersection with River Road, Noarlunga Downs

    Hours of work: 7.00am-6.00pm, Monday to Friday (road closures in place 24/7)

    Key details:

    • local access to residents and businesses will be maintained
    • please follow detour signage and directions on site for your safety
    • the next stage of work will require progressive lane restrictions on River Road.

    Please note: Timeline dates are subject to change based on program requirements and weather conditions.

    We appreciate your patience as we complete this important work.

    Find out about detours near you

    Read more about how we restore any roads, footpaths or the environment impacted by our works.

    When: Monday 29 June to early August

    Where: Serafino Drive at the intersection with River Road, Noarlunga Downs

    Hours of work: 7.00am-6.00pm, Monday to Friday (road closures in place 24/7)

    Key details:

    • local access to residents and businesses will be maintained
    • please follow detour signage and directions on site for your safety
    • the next stage of work will require progressive lane restrictions on River Road.

    Please note: Timeline dates are subject to change based on program requirements and weather conditions.

    We appreciate your patience as we complete this important work.

    Find out about detours near you

    Read more about how we restore any roads, footpaths or the environment impacted by our works.

  • Cycle and pedestrian detour - Coast to Vines trail between Southern Expressway and Melsetter Road

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    When: Thursday 4 June until mid-August 2026

    Where: Coast to Vines trail between Southern Expressway and Melsetter Road

    Hours of Work: 7:00am - 6:00pm, Monday - Saturday (detours in place 24/7)

    Key details:

    • short sections of the trail will be diverted around work zones
    • pedestrians and cyclists will be directed off the path and onto the residential streets of Adel Circuit and Kimber Avenue
    • please follow signage and directions from traffic controllers.

    We appreciate your patience as we complete this important work.

    When: Thursday 4 June until mid-August 2026

    Where: Coast to Vines trail between Southern Expressway and Melsetter Road

    Hours of Work: 7:00am - 6:00pm, Monday - Saturday (detours in place 24/7)

    Key details:

    • short sections of the trail will be diverted around work zones
    • pedestrians and cyclists will be directed off the path and onto the residential streets of Adel Circuit and Kimber Avenue
    • please follow signage and directions from traffic controllers.

    We appreciate your patience as we complete this important work.

  • Day and night works- Main South Road, between River Road and Melsetter Road

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    When: Monday 25 May until mid-August 2026

    Where: Main South Road between River Road and Melsetter Road.

    Hours of work: Day works - 7:00am- 6:00pm, Monday to Saturday

    Night works - 7:00pm – 6:00am, Sunday to Thursday nights

    Key details:

    • at times, construction works may take place 24/7, including both day and night
    • changed traffic conditions may apply on Main South Road
    • some vibration, noise and dust are to be expected during these works.


    Please note: Timeline dates are subject to change based on program requirements and weather conditions.

    We appreciate your patience as we complete this important work.

    When: Monday 25 May until mid-August 2026

    Where: Main South Road between River Road and Melsetter Road.

    Hours of work: Day works - 7:00am- 6:00pm, Monday to Saturday

    Night works - 7:00pm – 6:00am, Sunday to Thursday nights

    Key details:

    • at times, construction works may take place 24/7, including both day and night
    • changed traffic conditions may apply on Main South Road
    • some vibration, noise and dust are to be expected during these works.


    Please note: Timeline dates are subject to change based on program requirements and weather conditions.

    We appreciate your patience as we complete this important work.

Page last updated: 22 Jun 2026, 04:10 PM