East Wellington Wastewater Treatment Plant, Tailem Bend, South Australia

East Wellington is a wastewater treatment plant located near Tailem Bend in South Australia, Australia. It serves a small population of 519 people and operates under secondary treatment standards. The plant is situated in the Coorong District Council area, a region known for its agricultural and coastal environments. As a secondary treatment facility, East Wellington provides biological treatment to reduce organic matter and suspended solids. The plant discharges approximately 134.33 ML of treated wastewater annually. Australian wastewater treatment plants of this scale typically operate under state environmental protection regulations, such as those enforced by the Environment Protection Authority (EPA) South Australia. The treated effluent from East Wellington is discharged into the local environment, which ultimately drains into the Southern Ocean via the Murray-Darling Basin system. The nearby Coorong and Lower Lakes are ecologically significant wetlands that support diverse birdlife and aquatic species. The plant's coastal proximity requires careful management to protect marine water quality and sensitive ecosystems.

East Wellington discharges into a catchment that flows toward the Coorong, a coastal lagoon system of high ecological value. The Coorong connects to the Murray River estuary and the Southern Ocean, supporting migratory birds and fish. The plant's coastal location within 10 km of the sea means its discharge must meet strict nutrient and pathogen limits to protect marine habitats and recreational waters.