Jacobs was selected by Water Corporation to design, build, operate and maintain the Alkimos Seawater Desalination Plant in Perth, Australia. The project, part of an alliance with Water Corporation and ACCIONA, is expected to produce 13 billion gallons (50 billion liters) of drinking water per year, scalable up to 26 billion gallons (100 billion liters) under a future project. Part of an overall program by Water Corporation estimated at approximately $1.83 billion (AUS $2.8 billion), the plant will secure a climate-independent, sustainable water supply to more than 2.5 million Western Australians.

In addition to the desalination facility, the project incorporates a 2.5 mile (4.1 kilometer) offshore outfall tunnel and 1.6 mile (2.6 kilometer) clean, seawater intake tunnel. Both tunnels are approximately 11.3 feet (3.45 meters) inside diameter and will be constructed beneath the seabed using tunnel boring machines. Jacobs has been at the forefront of innovative desalination plant design, delivery and maintenance for decades, delivering the early-phase concepts for the Alkimos site.

This follows Jacobs' roles as the designer of the Sydney Desalination Plant, Gold Coast Desalination Plants, and key roles in many more desalination facilities around the globe including Carlsbad in California and Tuas 3 in Singapore.