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Mullaquana Station named preferred site for Northern Water Desalination Plant

December 3, 2025 9:49 am in by
Image: John White Photos for Getty Images.

A site near Whyalla has been earmarked as the preferred location for the proposed Northern Water Desalination Plant.

Mullaquana Station – about 20km south of Whyalla – has been found to have the best balance of environmental, social and economic factors, following a multi-criteria analysis.

If the project goes ahead, the location will also avoid creating an extra 200 kilometres of pipeline.

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Cape Hardy on the Eastern Eyre Peninsula was also assessed as a potential location for the project.

Premier Peter Malinauskas said the project would be a major economic boost for the Spencer Gulf region.

“If green-lit, Northern Water will support South Australia’s strategic mineral industries, including magnetite for steel production and copper expansion at Olympic Dam, Oak Dam and Carrapateena,” he said in a statement.

Despite this, there are concerns around the environmental impacts of a desalination plant in the region, particularly regarding Mullaquana’s location near the ocean.

Detailed bids on delivering the project are now being prepared, with a final investment decision expected in the next financial year.

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