Onslow Seawater Desalination Plant

Closed 7 Apr 2021

Opened 29 Mar 2021


The Water Corporation propose to construct a seawater desalination plant to supply potable water to the town of Onslow, WA. Seawater intake and brine wastewater release will occur in Beadon Bay, approximately 1 km seaward from the shoreline. The desalination processing facility is to be located at Lot 551, 552 and/or 553 Beadon Creek Road, Onslow.

The proposal will involve the installation of permanent subtidal infrastructure in Beadon Bay (intake head, brine diffusers and transport pipes), a land-based processing plant, and piping to the existing town storage tanks.

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