Between March 2023 and mid-2024, dedicated Westernport Water staff have maintained the floating wetlands, while research scientists from Deakin University and CSIRO have conducted monitoring to evaluate their impact on nutrient removal and greenhouse gas reduction.

Conclusive results will be released when the project finishes in mid-2025. However, we’re excited to share the preliminary findings and key insights from the establishment phase of the project. with you

Preliminary findings

After one year of the project, we have noted the following results:

  • The installation of the floating wetland contributed to a 27% average reduction in greenhouse gas emissions.
  • There is evidence that the floating wetland is removing synthetic materials from wastewater. Read more.
  • The plant species, Common Reed, has grown better than Jointed Twig Rush and will be able to achieve a higher rate of nutrient removal due to superior growth. An additional species, March Club-rush, was planted earlier in 2024 has adapted well with substantial growth.
  • Reductions in methane and nitrous oxide emissions were also observed from the floating wetland.