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Securing drinking water for Kalgoorlie

System modelling for pump station C in Mundaring

Ordinarily, water from the reservoir in Mundaring is pumped to the local water treatment plant and then to Kalgoorlie via the famous C.Y. O’Connor pipeline. However, a contingency was required to secure the supply when water cannot be taken from the reservoir. Utilising water from Perth was the obvious solution, but the initial proposal involved placing a storage tank in the nearby national park – an option fraught with practical, environmental and bureaucratic difficulties.

We used our modelling, water hammer analysis and real-time control systems expertise to help develop and validate an alternative solution that enabled the existing pump station to work in tandem with a new station – Pump Station C – to secure a contingency water supply from Perth, whenever it’s required.

“OneStone provided excellent service, delivering a quality output within a very tight timeframe on a system with complex hydraulic challenges.”

Shane Farquharson
Principal Engineer Water, GHD