What's this project all about?

TasWater is committed to investing in improved sewerage infrastructure to cater for Hobart’s future growth, with the Green Point Sewage Treatment Plant undergoing a major upgrade during 2024/25.

This major project involves upgrading the electrical and control systems, as well as the two anaerobic digesters. The Sewage Treatment Plant will also receive a new biogas system.

Upgrading the ageing anaerobic digester and biogas systems will contribute to a more efficient waste treatment process and help minimise odours. By improving the systems the plant utilises to operate effectively, we are ensuring that our infrastructure will meet the needs of the growing Bridgewater community.

Construction began in May 2024, following preliminary works at the Green Point Sewage Treatment Plant. Originally planned for completion in early 2025, the works will be extended until September 2025 as we take the opportunity to upgrade other important infrastructure at the Plant.

What you may notice during our work

There will be construction activity around the Green Point Sewage Treatment Plant, including truck movements, heavy equipment, service vehicles, and workers. Those visiting the playground or regularly attending businesses near the Plant are advised to be cautious of additional traffic in the area.

To facilitate the project, we will be moving waste from Green Point Sewage Treatment Plant to other Pump Stations to be processed. The initial location is a sewage pump station located on Cadbury Road. Transfer to this Pump Station ceased in July 2024, and we are now transferring waste to Price of Wales Bay Sewage Treatment Plant. Treatment of waste at the Cameron Bay Sewage Treatment Plant also remains an option for this process.

You will notice minor increased truck movement at these locations. We are confident that the risk of odour is minimal due to the nature of the technology used during the transfer process.

Most work will take place weekdays, Monday to Friday. There will be some waste transfer activity on Saturdays to ensure the plant remains efficient and operational.

What to expect during plant commissioning

The commissioning phase of the project will take place from early August 2025. This involves seeding of the two new anaerobic digester tanks, which will mean they start producing some biogas before the new biogas flares coming online.

There may be a temporary increase in odour during the seeding phase of the new tanks from early August for approximately four to six weeks until mid-September 2025.

We’re committed to minimising impacts on the local community throughout this commissioning phase.