Griffith Wastewater Treatment Plant, Griffith, New South Wales

The Griffith wastewater treatment plant is a municipal facility located on Harward Road in Tharbogang, near Griffith, New South Wales. It serves a population of around 15,276 residents in the Griffith City Council area, operating as part of the region's essential water infrastructure. As an Australian plant serving a medium-sized agglomeration, it is subject to state and national wastewater regulations under the Environment Protection Authority (EPA) of New South Wales. Treatment standards are expected to meet secondary or tertiary requirements depending on discharge location and environmental sensitivity, in line with the National Water Quality Management Strategy. The plant's treated effluent is discharged into the local catchment, which drains into the Murrumbidgee River system, a major tributary of the Murray-Darling Basin. This basin supports extensive agricultural activity and is ecologically significant for native fish species and waterbirds, making effective treatment critical for downstream water quality.

The plant discharges into the Murrumbidgee River catchment, part of the Murray-Darling Basin, Australia's largest river system. The basin supports diverse aquatic ecosystems, including native fish like Murray cod and golden perch, and provides water for irrigation in the Riverina region. Downstream, the Murrumbidgee joins the Murray River, which flows to the Southern Ocean via the Coorong lagoon, a wetland of international importance. Effective wastewater treatment is vital to prevent nutrient enrichment and protect these sensitive environments.