Dinner Plain Wastewater Treatment Plant - Alpine Shire, Victoria

Dinner Plain wastewater treatment plant is located in the Alpine Shire of Victoria, Australia, serving the small resort town of Dinner Plain. With a population served of 267, it is a small-scale facility designed for the local community and seasonal visitors. The plant provides secondary treatment, which is appropriate for its size and inland location. Australian wastewater treatment standards require secondary treatment for discharges to inland waters, ensuring protection of the surrounding alpine environment. The plant's discharge volume of 69.15 megalitres per year reflects its small service population. The treated effluent is discharged into the local catchment, which ultimately drains into the Mitchell River system and then to the Gippsland Lakes and Bass Strait. The alpine setting means the plant operates in a sensitive environment with cold temperatures and seasonal tourism fluctuations, requiring robust treatment to protect downstream ecosystems.

The plant discharges into the headwaters of the Mitchell River catchment, which flows through the Victorian Alps before reaching the Gippsland Lakes, a large estuarine system, and finally Bass Strait. The alpine watershed supports unique flora and fauna, including threatened species such as the Alpine She-oak Skink. The plant's secondary treatment helps protect water quality in this ecologically sensitive region.