The project, which also includes doubling the Binduli Reservoir from 400 million litres to 800 million litres, is expected to boost the amount of water able to be pumped through the pipeline by 10 per cent. The pipeline, designed by famed WA engineer CY O'Connor, has served the Goldfields and Wheatbelt for 120 years.
Demand for water in the Goldfields has increased by 16 per cent in the past five years. Kalgoorlie's mining industry is currently hampered by a lack of commercial water supply, with the existing pipeline designated for drinking water only. Most businesses draw water from the ground, which is six times as salty as seawater.
WA Water Minister Daniel Pastorelli said from 2027 an additional 7.2 million litres would flow into the Goldfields every day. "The Goldfields pipeline is one of the most important pieces of economic infrastructure in the state's history," he said. "It served the Goldfields and the Wheatbelt for now 120 years, providing water to a whole vast range of different communities and industries, and supported economic development for many, many years. Today marks the beginning of the next chapter."
The new section of the pipeline runs through the shires of Westonia, Merredin, and Yilgarn, and much of it will be buried.