Alkimos Seawater Desalination Plant
What is being planned?
Water Corporation is investigating the establishment of a possible future seawater desalination plant on land adjacent to its wastewater treatment plant in Alkimos. The investigations are part of long term planning to secure Perth’s water supply.
The possible future Alkimos Seawater Desalination Plant is proposed to be delivered in stages. Initially a 25GL/year plant, with supporting intake, outfall and pipeline infrastructure, with a further 25GL/year expansion to follow.
We are also investigating a possible future desalination plant near operating plant in Kwinana and pursuing other water source solutions including expansion of groundwater replenishment.
What is a feasibility investigation?
A feasibility investigation, or study, assesses whether a project is viable and takes into consideration a range of factors including the likely environmental, social, technical and financial outcomes of what is being considered. A feasibility study can include applying for some approvals before a project is decided to proceed.
Why is it needed?
Water Corporation is planning ahead to secure water supplies in our drying climate for a growing city. Streamflow into dams has reduced from an average of 394 billion litres per year pre-1975 to an average of 50.6 billion litres over the past five years. This represents an 87 per cent reduction in average streamflow to our dams. In 2015, Perth’s dams received their worst streamflow on record.By 2030, we expect a further 70 to 100 gigalitres of additional climate independent water will be required to support Perth’s water needs, providing our targets for water use reduction and recycling are met.
Why Alkimos and not elsewhere?
When will the plant be built?
How does desalination work?
Why desalination and not other options (such as groundwater replenishment)?
Why can’t you expand the existing desalination plants (in Kwinana and Binningup)?
What will it cost?
What will the plant’s energy requirements be?
Instead of a major new water source, shouldn’t we be concentrating on reducing and recycling water?
Will the desalination plant have an effect on the value of my home?
Response prepared by Lendlease:
The location of the proposed plant would be within the Water Corporation’s existing infrastructure land to the north. This site has an existing buffer of regional open space separating the facility from the community.
Any Water Corporation construction and operational trucks for the facility now also have their own access point directly off Marmion Avenue and no longer drive through the residential area.
Part of initial planning for the plant includes sinking the possible future plant into the Water Corporation site, where it will be sheltered from community view to the north and south by large dunes.For more information please contact Lendlease.
Will our 6star Green Star rating for Alkimos Beach estate be affected by a desalination plant?
Response provided by Lendlease:
No, the vision of the Alkimos Beach development partners, LandCorp and Lend Lease, is to create a sustainable and carbon neutral community and this remains unchanged. Alkimos Beach was awarded Australia’s first 6 Star Green Star community based on the physical implementation of infrastructure and fostering community initiativesFor more information contact Lendlease.