Tocumwal Wastewater Treatment Plant, New South Wales, Australia

Tocumwal wastewater treatment plant is located on McCullochs Road in Tocumwal, New South Wales, within the Berrigan Shire Council area. The plant serves a population of approximately 2,427 residents, providing secondary treatment for municipal wastewater. As a secondary treatment facility, the plant meets the standard requirements for inland wastewater treatment in Australia. Australian regulatory frameworks, such as the National Water Quality Management Strategy and state-based environment protection authorities, set discharge standards to protect receiving waters. For a plant of this scale, secondary treatment is typical and ensures significant reduction of organic matter and suspended solids. The treated effluent is discharged at a volume of 628.11 megalitres per year. The plant is located inland, over 50 km from the coast. The local watershed likely drains into the Murray River system, which is a vital waterway for agriculture, ecosystems, and communities in southeastern Australia. The plant plays a key role in protecting downstream water quality.

The plant discharges into the Murray-Darling Basin, Australia's largest river system, which ultimately flows into the Southern Ocean via the Murray Mouth. The basin supports diverse aquatic life, including native fish species and waterbirds, and is a critical water resource for agriculture and communities. The plant's secondary treatment helps reduce nutrient and organic loads, mitigating risks of algal blooms and oxygen depletion in downstream waters.