The upgrade of critical water infrastructure across Tasmania continues with the completion of the Green Point Sewage Treatment Plant upgrade in Bridgewater near Hobart.
The modernised facilities are now equipped to meet the wastewater needs of Hobart’s outer northern suburbs for years to come.
Located on the banks of the Derwent River, the Green Point Sewage Treatment Plant has been operating since 1972. The upgrade focused on renewing ageing infrastructure to improve reliability, reduce odour, and support future population growth requirements.
The plant remained fully operational throughout construction, which added complexity to the delivery.
The project included a range of technical and operational upgrades, including:
- Modernisation of electrical and control systems
- Upgrades to the plant’s anaerobic digesters
- Installation of a new on‑site biogas flaring system
- Improvements to sludge handling using new Spirotainers to reduce odour and limit manual handling
- Installation of solar panels to support more sustainable operations
These improvements are designed to improve plant performance while supporting safer and more efficient operations.
The site’s location near parkland, a playground, residential areas and a community education facility meant proactive community engagement was a key part of the project.
Increased vehicle movements and on‑site works called for dedicated measures to manage impacts, maintain safety and keep nearby residents and visitors informed throughout delivery.
Exceptional collaboration between a wide range of teams – spanning project execution, operations, quality, asset performance, HSE and specialist subcontractors – led to seamless integration of new equipment within the existing infrastructure.
The upgrade was delivered by the TasWater Alliance – a partnership between TasWater, CPB Contractors, UGL and WSP Australia.