Improving water on the Fleurieu Peninsula

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Changes are being made this December to improve the quality of drinking water supplies to our customers across the Fleurieu Peninsula.

This will apply to homes and businesses in and surrounding: Your water is sourced from Myponga Reservoir

  • Victor Harbor and Encounter Bay, McCracken, Hayborough, Chiton and Hindmarsh Valley.
  • Port Elliot, Middleton, Goolwa and Hindmarsh Island
  • Willunga, Sellicks Beach and parts of Aldinga Beach and Sellicks Hill.

Your tap water is sourced from the Myponga Reservoir and is cleaned, filtered and disinfected before reaching your tap. Currently, we use chlorine to disinfect the water to destroy any bacteria, pathogens or other micro-organisms that may not have been removed in earlier filtration stages. These can be present in raw water and can cause illness if consumed.

From 1 December 2021 we will change the disinfection process from chlorination to chloramination.

This change will overcome water quality challenges due to source water and long pipelines in the region and follows a similar change for residents of Myponga in late 2018 and Normanville, Carrickalinga and Yankalilla earlier this year.

In South Australia, drinking water has been safely disinfected with chloramine since the 1980s. About 220,000 people across the state currently receive chloraminated water, including Milang, Clayton Bay, Strathalbyn and Tailem Bend as well as northern towns including Port Augusta, Crystal Brook, Port Pirie and Whyalla. Chloraminated water is also used on the Yorke Peninsula, and in parts of the Adelaide Hills.

Learn more

In addition to the information and resources available on this page, we’re here to help. Call us on 1300 SA WATER, email project@sawater.com.au or talk to us at one of the locations listed on the right of this page.

If you have questions about health-related matters according to your specific circumstances, the Australian Drinking Water Guidelines or the Safe Drinking Water Act (2011), you can contact SA Health’s specialist Water Quality Unit on 8226 7100 or waterquality@sa.gov.au.

Treating your water to make it clean and safe How we treat your drinking water

Myponga Reservoir is fed by rainfall and can collect a large amount of natural organic matter, such as leaves, earth and sediment. Chlorine can react with this and create by-products such as Trihalomethanes (THMs) which can affect water quality.

To ensure you are supplied with the highest quality drinking water possible in line with our requirements under the Safe Drinking Water Act, the disinfection method of your tap water will change to chloramine.

Chloramine destroys bacteria and other pathogens and is better than chlorine at penetrating the length of the pipes in the Fleurieu Peninsula network. It is important that your water is disinfected right up to your water meter.

To find out more information about chloramine and the way we disinfect water to ensure that it is safe to drink, please head to our website.

Changeover process

There may be some practical matters for you to manage because of the change, but we're here to work with you through these.

Your drinking water supply will not be interrupted during the changeover.

You may notice a change in the taste and smell of your drinking water. This is normal and it may take about two or three weeks to settle. The smell may be more distinctive at first and then will lessen as the water moves through the pipes. Our team of Water Quality Experts will undertake regular testing to monitor the new water as it moves through the pipes.

As the new water moves through the pipes, it may lift organic matter than has built up on the inside of pipes over time. This is called biofilm and while the water is safe to drink, it may temporarily discolour the water.

If you experience any discoloured water, run a sink tap or give your garden a drink to help it pass through the system. If it does not clear, please contact our Customer Care Centre on 1300 729 283.


Australian Drinking Water Guidelines

Our Water quality experts regularly check your water qualityAcross Australia, drinking water is governed by health regulators that enforce the Australian Drinking Water Guidelines (2011), which have rigorous national targets covering a range of parameters and are based on extensive scientific and medical studies. This includes disinfection processes including chloramination and chlorination.

In South Australia, the Safe Drinking Water Act (2011) mandates compliance with the Australian Drinking Water Guidelines, with SA Health being the independent regulator that ensures this.

In addition, through our comprehensive water monitoring and testing program, we regularly collect and analyse samples from across that state, including the Fleurieu Peninsula. More than 250,000 water samples are collected and analysed each year by our experts from a variety of locations across South Australia, from source to tap.

You can use a tool on our website to search your postcode or suburb to see a full profile of the drinking water supplied to your area.



Changes are being made this December to improve the quality of drinking water supplies to our customers across the Fleurieu Peninsula.

This will apply to homes and businesses in and surrounding: Your water is sourced from Myponga Reservoir

  • Victor Harbor and Encounter Bay, McCracken, Hayborough, Chiton and Hindmarsh Valley.
  • Port Elliot, Middleton, Goolwa and Hindmarsh Island
  • Willunga, Sellicks Beach and parts of Aldinga Beach and Sellicks Hill.

Your tap water is sourced from the Myponga Reservoir and is cleaned, filtered and disinfected before reaching your tap. Currently, we use chlorine to disinfect the water to destroy any bacteria, pathogens or other micro-organisms that may not have been removed in earlier filtration stages. These can be present in raw water and can cause illness if consumed.

From 1 December 2021 we will change the disinfection process from chlorination to chloramination.

This change will overcome water quality challenges due to source water and long pipelines in the region and follows a similar change for residents of Myponga in late 2018 and Normanville, Carrickalinga and Yankalilla earlier this year.

In South Australia, drinking water has been safely disinfected with chloramine since the 1980s. About 220,000 people across the state currently receive chloraminated water, including Milang, Clayton Bay, Strathalbyn and Tailem Bend as well as northern towns including Port Augusta, Crystal Brook, Port Pirie and Whyalla. Chloraminated water is also used on the Yorke Peninsula, and in parts of the Adelaide Hills.

Learn more

In addition to the information and resources available on this page, we’re here to help. Call us on 1300 SA WATER, email project@sawater.com.au or talk to us at one of the locations listed on the right of this page.

If you have questions about health-related matters according to your specific circumstances, the Australian Drinking Water Guidelines or the Safe Drinking Water Act (2011), you can contact SA Health’s specialist Water Quality Unit on 8226 7100 or waterquality@sa.gov.au.

Treating your water to make it clean and safe How we treat your drinking water

Myponga Reservoir is fed by rainfall and can collect a large amount of natural organic matter, such as leaves, earth and sediment. Chlorine can react with this and create by-products such as Trihalomethanes (THMs) which can affect water quality.

To ensure you are supplied with the highest quality drinking water possible in line with our requirements under the Safe Drinking Water Act, the disinfection method of your tap water will change to chloramine.

Chloramine destroys bacteria and other pathogens and is better than chlorine at penetrating the length of the pipes in the Fleurieu Peninsula network. It is important that your water is disinfected right up to your water meter.

To find out more information about chloramine and the way we disinfect water to ensure that it is safe to drink, please head to our website.

Changeover process

There may be some practical matters for you to manage because of the change, but we're here to work with you through these.

Your drinking water supply will not be interrupted during the changeover.

You may notice a change in the taste and smell of your drinking water. This is normal and it may take about two or three weeks to settle. The smell may be more distinctive at first and then will lessen as the water moves through the pipes. Our team of Water Quality Experts will undertake regular testing to monitor the new water as it moves through the pipes.

As the new water moves through the pipes, it may lift organic matter than has built up on the inside of pipes over time. This is called biofilm and while the water is safe to drink, it may temporarily discolour the water.

If you experience any discoloured water, run a sink tap or give your garden a drink to help it pass through the system. If it does not clear, please contact our Customer Care Centre on 1300 729 283.


Australian Drinking Water Guidelines

Our Water quality experts regularly check your water qualityAcross Australia, drinking water is governed by health regulators that enforce the Australian Drinking Water Guidelines (2011), which have rigorous national targets covering a range of parameters and are based on extensive scientific and medical studies. This includes disinfection processes including chloramination and chlorination.

In South Australia, the Safe Drinking Water Act (2011) mandates compliance with the Australian Drinking Water Guidelines, with SA Health being the independent regulator that ensures this.

In addition, through our comprehensive water monitoring and testing program, we regularly collect and analyse samples from across that state, including the Fleurieu Peninsula. More than 250,000 water samples are collected and analysed each year by our experts from a variety of locations across South Australia, from source to tap.

You can use a tool on our website to search your postcode or suburb to see a full profile of the drinking water supplied to your area.



Page last updated: 25 November 2021, 09:47