Perth Seawater Desalination Plant 2

Closed 20 May 2019

Opened 14 May 2019


The Western Australian Water Corporation is proposing to construct the Perth Seawater Desalination Plant 2 (PSDP 2) as part of Perth’s Integrated Water Supply Scheme which aims to provide additional sources of drinking water to supplement the existing metropolitan water supply.


The PSDP2 Proposal will be located within the Kwinana Industrial Area, approximately 38 km south of the Perth Metropolitan Area, on Lot 1864, Riseley Road in Naval Base.

PSDP2 will be developed in two stages (each with a capacity to supply 25 GL) and will be operated independently of the existing PSDP1. The Proposal requires the installation of a seawater intake pipeline and seawater return outlet to enable the discharge of return seawater (brine) to the marine environment.

Why your views matter

At this initial stage of the EIA process, comment is simply sought on whether or not the EPA should assess a proposal and, if so, what level of assessment is considered appropriate.

What happens next

Following the seven day public comment period and consideration of any comments received, the EPA will decide whether or not this proposal requires environmental impact assessment and, if so, what level of assessment will be applied.

The EPA's decisions on level of assessment are released each Monday on the EPA's website.


  • All of Western Australia


  • Public


  • Seven-day comment on referrals