Mundaring DWTP

The Helena Water consortium, comprising ACCIONA, TRILITY, Brookfields Multiplex and the Royal Bank of Scotland, was selected to design, build and operate the Mundaring drinking water treatment plant in the Perth area (Western Australia) under a 35-year concession agreement.

This project is the winning bid under a PPP (Public-Private Partnership) scheme in the State of Western Australia. Its initial capacity is 165,000 m³ per day, with a maximum capacity of around 240,000 m³ per day.

The plant supplies the Goldfields and Agricultural Water System (G&AWS) network, including Kalgoorlie, in the State of Western Australia. Australia's G&AWS is the drinking water supply network serving more than 100,000 people. It has more than 530 km of pipelines originally built in 1919.

The plant takes raw water from the Mundaring reservoir and then treats it to achieve the correct pH level.

GENERAL INFORMATION

Entity: Water Corporation
Location: Mundaring, Western Australia
Population served: 100,000 inhabitants
Capacity: 165,000 m³/day
Type of contract: EPC + O&M

KEY POINTS

3 power supplies
Raw water pumping
Chemical treatment and flocculation
Flotation - filtration: DAFF
Activated carbon filtration (BAC)
Dissolved Organic Carbon Removal (DOC)
Ultraviolet and chloramines disinfection
Recarbonation
Sludge treatment
Product water pumping
24/7 security of supply
Australian Drinking Water Guidelines (ADWG) compliance
Low corrosive product water for distribution pipework
Disinfection control

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GENERAL INFORMATION

KEY POINTS

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