9 September 2025 ·
Updates ·
Initiatives
Planning for Growth – Wonthaggi Sewerage Upgrade Project (WoSUP) South Gippsland Water is planning a major upgrade of the Wonthaggi Wastewater Treatment Plant and transfer pipeline to Baxters Beach to keep pace with the region’s growth. With Wonthaggi’s population set to rise by 30 per cent by 2036, the current lagoon system is nearing capacity. […]
South Gippsland Water is planning a major upgrade of the Wonthaggi Wastewater Treatment Plant and transfer pipeline to Baxters Beach to keep pace with the region’s growth. With Wonthaggi’s population set to rise by 30 per cent by 2036, the current lagoon system is nearing capacity. A new mechanical plant will ensure safe, reliable, and sustainable wastewater treatment for decades to come.
Wonthaggi’s Wastewater Treatment Plant has been serving the community well for over 50 years. Located about 2.5km west of the town centre, the lagoon system treats wastewater from Wonthaggi, Kilcunda, and Dalyston to strict standards set by the Environment Protection Authority (EPA).
Community members, local groups and stakeholders are encouraged to get involved and help us refine our plans and design. South Gippsland Water and consultants RMCG are visiting communities and meeting with interest groups and stakeholders throughout the region until October 2025.
For more information, to organise a project briefing for your group, or to share your view, get in touch with our project engagement team at email wosup@rmcg.com.au or call 0456 774 170.
