Project Announcement – Cranbrook Water Treatment Plant Upgrades – WA


WestWater have successfully won a tender with the Water Corporation for the design and construction of upgrades to the Cranbrook Water Treatment Plant, located in the Great Southern Region of Western Australia. The project is required to provide enhanced treatment of the water source for the local population, and to cater for forecast future demand.

The works will include:

  • Decommissioning and removal of existing assets.
  • Installation of a new treatment plant consisting of the following components:
    •  Strainer/disc filter unit
    •  Raw water tank
    •  Coagulant Contact Tank
    •  Coagulant Contact Tank Feed Pumps
    •  Ultrafiltration unit with integral feed pump
    •  Clean-in-Place (CIP) Tank
    •  Filtrate tank
    •  Filtrate Water pumps
    •  Ultra-violet disinfection units
    •  Booster pumps with hydro-pneumatic tank
    •  Chemical dosing and storage systems (dosing cabinets)
    •  Waste disposal system including pressure main
    •  Auxiliary systems including water sampling and analysis system, safety showers, hose reels and compressed air system
  • Modifications to the transfer main between dams and WTP inlet to provide a scour/flushing point.
  • Temporary works required for changeover between the existing system and new system.
  • Chemical barrier protection.

All aspects of the works will be completed in accordance with the Contract, Water Corporation Standards and Australian Standards.

The project is expected to reach Practical Completion in May 2023.