Kambalda Wastewater Treatment Plant, Kambalda East, Western Australia

Kambalda wastewater treatment plant is located on Tip Road in Kambalda East, within the Shire of Coolgardie, Western Australia. The facility serves a population of 2,706 and provides secondary treatment, which is the standard level for inland communities of this scale in Australia. The plant operates under Western Australia's environmental regulations, which require wastewater treatment to protect local water resources. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The plant has an annual discharge volume of 700.09 megalitres. The treated effluent is discharged into the local environment, likely into a nearby watercourse or evaporation basin, given the arid climate of the Goldfields-Esperance region. The area is part of the Lake Lefroy catchment, an internally draining system that supports unique salt-tolerant ecosystems and is important for migratory bird species.

The plant discharges into the Lake Lefroy catchment, a terminal salt lake system in the Goldfields region of Western Australia. This arid environment relies on groundwater and episodic surface flows, making water quality management critical for the hypersaline lake ecosystem, which supports migratory shorebirds and endemic aquatic invertebrates. The catchment drains internally with no outflow to the ocean.