Westernport Water has joined forces with scientists to explore how floating wetlands can be used in the wastewater treatment process.

The two-year research project from 2023-2025 involved the installation of a floating wetlands system on a wastewater lagoon at Cowes Wastewater Treatment Plant.

Floating wetlands are a recent innovation for wastewater treatment. They mimic the appearance of a natural floating island. Like a hydroponic system, the roots of native plants grow into the water under modules that float on the surface of the water.

As the plants grow, their roots provide habitat for microorganisms that assist with the removal of wastewater pollutants and capture floating particles in the water.

Together with scientists from Deakin University and CSIRO, Westernport Water are monitoring the plants over two-years to evaluate their impact on nutrient removal and greenhouse gas reduction. The removal of emerging contaminants to the plant tissue is also being investigated.

FAQ's - Frequently Asked Questions

Frequently Asked Questions – Floating Wetlands Pilot Project 

Answers to frequently asked questions about the Floating Wetland Pilot Project. Click here. 

Preliminary findings and key insights – August 2024

Learn about preliminary findings from the establishment phase of the two-year pilot project. Read more. 

Timeline

  • Planning and benchmarking

    November – April 2023

  • Floating Wetlands Installed

    May 2023

  • Site visit for agricultural and local community

    November 2024

  • Final research released

    July 2025

Project Partners

Clarity Aquatic
Blue Carbon Lab logo
Victoria State Government: Environment, Land, Water and Planning

More information

Please email westport@westernportwater.com.au or call 1300 720 711 if you would like more information about the project.