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Water Infrastructure

Enhancing Rottnest Island with $34.1 million for vital infrastructure upgrades to overhaul the ageing water production and supply network.


The Water Infrastructure upgrade addresses the critical need for a robust water supply network that can adequately support the increasing demands of both tourists and island businesses in peak visitation periods.

With a $34.1 million investment, the project aims to revamp the island’s outdated system, including the desalination plant, water mains and distribution network. This strategic upgrade is vital for meeting both current and future water demands as well as enhancing firefighting capabilities. The Water Infrastructure Master Plan guides the multi-stage delivery, ensuring a sustainable and efficient water service for the next two decades.

This project is a key priority of the Rottnest Island Management Plan 2023-28, which includes a strategic focus on strengthening the island’s infrastructure to address legacy issues and ensure the island can sustainably meet demand over the next two decades.

Key benefits

Water production will be enhanced to meet the needs of visitors and residents for the next 20 years
Upgrade of the desalination plant and water mains to handle current and future demands
Reduction of water leaks with a new robust supply network
Increased service pressures across the water network
Improved capabilities for firefighting
Trial of mobile drinking water refill stations for visitor convenience

Key dates

Early works completed to date include the installation of new water mains within Kingstown and the Settlement Mall in 2021, and South Thomson, Longreach and Fay’s Bays in 2022.

The expected completion dates for the remaining areas are:

  • Geordie Bay – Due to be completed over winter 2024
  • North Thomson – Planning underway to be completed in winter 2025
  • Upgrade of water production infrastructure – Planning underway to be completed in Winter 2025


Contact and further information

You can reach us on the following details to find out more about these projects. Our contact lines are open Monday to Friday, 8:30 am to 5 pm, excluding public holidays.


This project has been made possible by funding from the State Government of Western Australia.
Start date
End date
This project has been made possible by funding from the State Government of Western Australia.