Lithgow Wastewater Treatment Plant, New South Wales | Australia

The Lithgow wastewater treatment plant is located in Bowenfels, a suburb of Lithgow, New South Wales, Australia. The facility serves a population of around 12,679 residents, making it a medium-sized municipal plant in the region. It is situated inland, approximately 150 kilometers west of Sydney, in the Central Tablelands region. As an operational plant, it is subject to the regulatory framework of the New South Wales Environment Protection Authority (EPA), which issues environment protection licenses under the Protection of the Environment Operations Act. For a plant of this scale, secondary treatment is typically required, with additional nutrient removal if discharging to sensitive waters. The plant's treatment processes are designed to meet state water quality objectives. The treated wastewater is discharged into the local catchment, which ultimately flows into the Macquarie River system, part of the Murray-Darling Basin. This basin is Australia's largest river system and supports significant agricultural activity and diverse aquatic ecosystems. The plant plays a key role in protecting downstream water quality and maintaining the ecological health of the region.

The Lithgow plant discharges into the local watershed, which drains into the Macquarie River, a tributary of the Darling River within the Murray-Darling Basin. This basin is ecologically significant, supporting wetlands and floodplains that provide habitat for waterbirds and native fish. The plant's operations help mitigate nutrient and pathogen loads, protecting downstream ecosystems and agricultural water users.