Stage 1 of the Alkimos Seawater Desalination Plant (ASDP) will deliver a plant capable of producing 50GL/a of water supply to Perth and Peel region, which in the future will have the potential to expand to 100GL/a (Stage 2). Together with the Eglinton Groundwater Scheme, also to be delivered by 2028 (4.9 GL/a), these two major water sources will produce an estimated combined capacity of ~105GL/a. Due to the location of the site in Alkimos, the seawater desalination plant will require a Trunk Main to deliver the source water to the closest Integrated Water Supply Scheme (IWSS) large storage facility in Wanneroo known as the Wanneroo Reservoir. To enable the integration of the new water source into the IWSS, it is proposed that a 32.5km Trunk Main (TM) is installed from ASDP to Wanneroo Reservoir with an offtake to Carabooda Tank. The first 6km of the 32.5km ASDP TM is commenced delivery in early 2022. This project is to deliver the remainder and majority of the 32.5km connection.
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