General Information

Location: Situated within the Alkimos Water Precinct, adjacent to the existing Alkimos Wastewater Treatment Plant.  The facility integrates with Perth's water supply network via a 33.5-kilometer underground pipeline connecting Alkimos to Wanneroo.

Partnerships: Alkimos SeaWater Alliance (ASWA) an alliance of Water Corporation, ACCIONA and Jacobs Group Australia, leads the project, bringing extensive expertise in water infrastructure delivery and operations.

Project value: Alkimos is part of an overall Water Corporation program of works valued at AU$2.8 billion to secure drinking water to millions of Western Australians.

Timeline: Construction began in mid-2024, with commissioning and delivery of drinking water targeted for 2028.

Key Features

• Stage 1 of the plant will produce 150,000 cubic meters (150 million litres) of drinking water per day, equivalent to 50 billion litres annually.
• There is a provision for a future Stage 2 expansion doubling capacity to 300,000 cubic meters per day (100 billion litres annually)
• The plant is designed for net-zero greenhouse gas emissions during construction and operation

Benefits

• The Alkimos Seawater Desalination Plant will help reduce the region’s reliance on groundwater by 30 billion litres annually, helping to preserve wetlands, forests, parks, and public open spaces.
• ACCIONA has committed to creating over 1,300 local jobs, including at least 155 apprenticeships and traineeships, to support workforce development in Western Australia.
• Built-up, vegetated sand dunes and retaining walls will protect the facility from coastal impacts and integrate it with the natural landscape.