Koonibba Wastewater Treatment Plant, Koonibba Aboriginal Community, South Australia

Koonibba wastewater treatment plant is located in the Koonibba Aboriginal Community, within the District Council of Ceduna in South Australia, Australia. The facility serves a small population of 233 residents, reflecting its role in a remote rural community. The plant is operational and provides secondary treatment, which is appropriate for the scale of the community. As a secondary treatment plant, Koonibba meets the standard requirements for biological treatment of wastewater, reducing organic matter and suspended solids. The plant discharges approximately 60.18 megalitres of treated effluent annually. The plant's design aligns with the needs of a small agglomeration under Australian regulatory frameworks, which emphasize appropriate treatment for population equivalents. The treated effluent from Koonibba is discharged into the local environment, likely contributing to the groundwater or nearby watercourses in the arid region of South Australia. The plant's location more than 10 km from the coast means its discharge does not directly impact marine ecosystems, but it plays a vital role in protecting local water quality and supporting the community's health and environment.

The Koonibba wastewater treatment plant discharges into the local watershed within the arid region of South Australia. The treated effluent likely percolates into groundwater or flows into ephemeral creeks that drain towards the Great Australian Bight, a marine environment that supports diverse aquatic life. The plant's secondary treatment helps protect downstream water quality, which is critical for sustaining local ecosystems in a water-scarce region.