Millbank Wastewater Treatment Plant, Bundaberg, Queensland

Millbank wastewater treatment plant is a municipal facility located in the suburb of Millbank, Bundaberg, Queensland, Australia. It serves an estimated population of 25,079, placing it in the medium agglomeration category for Australian wastewater infrastructure. Under Australian regulatory standards, wastewater treatment plants serving populations of this scale typically employ secondary treatment processes to meet environmental protection requirements. The facility has a designed capacity of 1.00 million liters per day, indicating it is sized to handle the local wastewater load. The plant's discharge ultimately flows into the Burnett River catchment, which drains into the Coral Sea near Bundaberg. This coastal discharge point is ecologically significant, as the region supports diverse marine habitats including seagrass meadows and coral reef ecosystems. The treatment plant plays a key role in protecting downstream water quality and the health of the Great Sandy Marine Park.

The plant is located in the Burnett River basin, which flows into the Coral Sea near Bundaberg. The downstream environment includes the Burnett River estuary and coastal waters that support important fisheries and marine biodiversity. The region is part of the Great Sandy Marine Park, a protected area that includes seagrass beds, mangroves, and coral reefs. Effective wastewater treatment is critical to prevent nutrient pollution and maintain water quality in these sensitive coastal ecosystems.