A contract has been awarded for the $196 million upgrade of Western Australia’s largest wastewater treatment plant, which will increase capacity by 40 million litres each day.

Western Australian Water Minister Mia Davies said joint venture partners, Civmec Construction and Engineering and Black and Veatch Australia, were the preferred proponent to upgrade and expand the Woodman Point Wastewater Treatment Plant (WWTP).

The upgrade includes construction of a new grit removal facility, new flow distribution channel, expansion of existing odour collection and treatment systems, new sedimentation tanks and conversion of the existing batch reactor to a permanent aeration facility.

Ms Davies said the project would increase the plant’s capacity from 140 to 180 million litres a day to cater for future growth in the region.

“The Woodman Point plant is a critical part of Perth’s wastewater treatment network and it currently serves about 680,000 people,” Ms Davies said.

“Once this large program of work is completed, it will be able to accommodate 900,000 people by 2019.

“This is a significant investment by the Liberal National Government which will create more jobs for West Australians.”

The project will be delivered using a construction alliance model, which the corporation has used to complete other complex infrastructure projects, including its two desalination plants.

The announcement follows a comprehensive request for proposal and bid process.

The expansion is expected to be completed by the end of 2019, with construction on site scheduled to be underway in early 2017.

Woodman Point WWTP serves an area bounded by Kalamunda in the east, Byford in the south, and the coast to the west.

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