Growing our water and wastewater network

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We’re investing in water and wastewater infrastructure to support housing growth and ensure our community has access to reliable water services now and into the future.

Why we are growing our networks

We’re working with the State Government and industry leaders to deliver effective water and wastewater solutions to support housing growth. This is the biggest expansion of our metropolitan water and wastewater network in decades, and it’s crucial for new housing developments on the outskirts of Adelaide, particularly in the northern suburbs. These areas need large-scale infrastructure to ensure reliable water and wastewater services for growing communities.


Unlocking new homes for the future

As part of the State Government’s Housing Roadmap, SA Water are investing $1.5 billion during the next 4 years to grow and expand our water and wastewater networks to enable an estimated 50,000 new homes to be built across South Australia. This includes an unprecedented $1.2 billion investment in critical growth infrastructure specifically across Adelaide’s north and south to directly unlock 11,000 new homes where they’re needed the most.

With ongoing investment, the network will eventually support up to 50,000 new homes by the 2050s, helping create sustainable and thriving communities. Read more about how we're supporting housing growth

What’s included in the upgrades?

Our planned works include:

  • 30 kilometres of new trunk water mains
  • 54 kilometres of trunk wastewater mains
  • 9 new water and wastewater pumping stations
  • 2 new water storage tanks

Where the upgrades are happening

This directly enables new homes to be built in development areas across Adelaide’s north and south, including:

  • Angle Vale
  • Blakeview
  • Eyre
  • Gawler East
  • Riverlea
  • Roseworthy
  • Onkaparinga Heights (formerly Hackham)
  • Virginia

Minimising disruptions while we deliver

To deliver this essential infrastructure, we’re working across multiple sites, mainly in Adelaide’s northern suburbs. We work closely with local communities throughout construction to minimise disruptions and make sure the work is completed safely and efficiently.

Why is my water pressure lower than normal?

A combination of recent hot weather, higher than usual demand and ongoing network upgrade work is contributing to some changes in water pressure in parts of Adelaide’s northern suburbs. These prolonged hot weather conditions have significantly increased demand across the network particularly in peak times, and when combined with critical infrastructure upgrades to support our network expansion, some customers are experiencing lower than normal water pressure depending on their location.

These significant upgrade works will increase network capacity in Adelaide’s north and while these works are being completed, there may be short periods of reduced pressure as we test, commission and connect new pipes. During these upgrades, we will continue to find ways to improve water network performance for customers ahead of new infrastructure coming online.

Find out more about water pressure and see suburbs currently experiencing low pressure on the SA Water website.

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

How are new pipes brought onto the network?

When we install new pipes, we follow a thorough commissioning process to make sure they’re safe, clean, and ready to join the network. You can learn more about what this involves below.

Find out more about commissioning pipes and other assets

Keep informed and get involved

We’re keeping local communities and stakeholders informed as we deliver these essential network upgrades. Through communication with residents and businesses, online updates, local advertising, and regular meetings with local and state government, we’re making it easy for everyone to learn about the project, share feedback, and stay updated on progress and impacts in their area.

Read our Community Newsletter

Find out more about how you can connect with our team

Find out about planned works near you

Find out about detours near you

Find maps, dates and details about road closures, detours and other traffic impacts in your area.

Need more information?

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



We’re investing in water and wastewater infrastructure to support housing growth and ensure our community has access to reliable water services now and into the future.

Why we are growing our networks

We’re working with the State Government and industry leaders to deliver effective water and wastewater solutions to support housing growth. This is the biggest expansion of our metropolitan water and wastewater network in decades, and it’s crucial for new housing developments on the outskirts of Adelaide, particularly in the northern suburbs. These areas need large-scale infrastructure to ensure reliable water and wastewater services for growing communities.


Unlocking new homes for the future

As part of the State Government’s Housing Roadmap, SA Water are investing $1.5 billion during the next 4 years to grow and expand our water and wastewater networks to enable an estimated 50,000 new homes to be built across South Australia. This includes an unprecedented $1.2 billion investment in critical growth infrastructure specifically across Adelaide’s north and south to directly unlock 11,000 new homes where they’re needed the most.

With ongoing investment, the network will eventually support up to 50,000 new homes by the 2050s, helping create sustainable and thriving communities. Read more about how we're supporting housing growth

What’s included in the upgrades?

Our planned works include:

  • 30 kilometres of new trunk water mains
  • 54 kilometres of trunk wastewater mains
  • 9 new water and wastewater pumping stations
  • 2 new water storage tanks

Where the upgrades are happening

This directly enables new homes to be built in development areas across Adelaide’s north and south, including:

  • Angle Vale
  • Blakeview
  • Eyre
  • Gawler East
  • Riverlea
  • Roseworthy
  • Onkaparinga Heights (formerly Hackham)
  • Virginia

Minimising disruptions while we deliver

To deliver this essential infrastructure, we’re working across multiple sites, mainly in Adelaide’s northern suburbs. We work closely with local communities throughout construction to minimise disruptions and make sure the work is completed safely and efficiently.

Why is my water pressure lower than normal?

A combination of recent hot weather, higher than usual demand and ongoing network upgrade work is contributing to some changes in water pressure in parts of Adelaide’s northern suburbs. These prolonged hot weather conditions have significantly increased demand across the network particularly in peak times, and when combined with critical infrastructure upgrades to support our network expansion, some customers are experiencing lower than normal water pressure depending on their location.

These significant upgrade works will increase network capacity in Adelaide’s north and while these works are being completed, there may be short periods of reduced pressure as we test, commission and connect new pipes. During these upgrades, we will continue to find ways to improve water network performance for customers ahead of new infrastructure coming online.

Find out more about water pressure and see suburbs currently experiencing low pressure on the SA Water website.

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

How are new pipes brought onto the network?

When we install new pipes, we follow a thorough commissioning process to make sure they’re safe, clean, and ready to join the network. You can learn more about what this involves below.

Find out more about commissioning pipes and other assets

Keep informed and get involved

We’re keeping local communities and stakeholders informed as we deliver these essential network upgrades. Through communication with residents and businesses, online updates, local advertising, and regular meetings with local and state government, we’re making it easy for everyone to learn about the project, share feedback, and stay updated on progress and impacts in their area.

Read our Community Newsletter

Find out more about how you can connect with our team

Find out about planned works near you

Find out about detours near you

Find maps, dates and details about road closures, detours and other traffic impacts in your area.

Need more information?

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



  • Stay informed and have your say

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    As we upgrade our water and wastewater networks, we’d love to hear from you. Your feedback helps us understand what’s working well and where we can improve. Visit this link to have your say.

    Read our Community Newsletter for updates on works happening near you, how we’re working to minimise disruptions, and ways to stay informed.

Page last updated: 12 Feb 2026, 02:42 PM