Huntfield Heights to Noarlunga Downs: Brodie Road, River Road
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
Need more information?
Visit our FAQs page for answers to the most asked questions.
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Day and night works- Main South Road, between River Road and Melsetter Road.
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Where: Main South Road between River Road and Melsetter Road.
Hours of work: Day works - 7:00am- 6:00pm, Monday to Friday
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.
Who's Listening
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Phone 0487 713 464 Email metrogrowth@sawater.com.au -
Phone 1300 981 233 Email metrogrowth@sawater.com.au
Help with contacting us
Deaf, hearing or speech impaired customers.
Contact us through the National Relay Service and ask for SA Water on 1300 981 233.
- TTY users phone 133 677 then ask for SA Water on 1300 981 233
- Speak and Listen users phone 1300 555 727 then ask for SA Water on 1300 981 233
Calling from overseas
You can contact us on +61 8 7424 1735
