Safeguarding the future of Perth’s drinking water thanks to seawater desalination

The Perth’s seawater desalination plant is one of the first desalination plants in the region and the largest plant in the southern hemisphere using reverse osmosis technology.

The Facility includes seawater intake, pretreatment structures, reverse osmosis desalination units, pumping and remineralization units. The innovative technology used includes pressure exchangers which provide energy savings of up to 20%.

Alliance* contract for the Design and Build 2005-2007
Alliance contract for Operation & Maintenance 2007-2032.

*Alliance agreement proAlliance : SUEZ in association with Multiplex Engineering and the Water Corporation



of drinking water per day


Billion litres

of fresh water supplied to 2M people each year