Kooralbyn Wastewater Treatment Plant, Queensland, Australia

Kooralbyn wastewater treatment plant is located in the Scenic Rim Region of Queensland, Australia, serving the small community of Kooralbyn. The plant provides secondary treatment for a population of around 1,920, reflecting its role in managing domestic wastewater for this rural area. As a secondary treatment facility, Kooralbyn meets the standard required for Australian wastewater plants under the National Water Quality Management Strategy. The plant's discharge volume of approximately 496.89 megalitres annually indicates its operational scale. Australian regulations mandate that such plants comply with state-level environmental protection policies, ensuring treated effluent meets water quality criteria before release. The plant's treated effluent is discharged into local waterways that ultimately flow into the Logan River catchment and Moreton Bay, a significant coastal ecosystem. This discharge supports downstream aquatic habitats and agricultural water reuse, contributing to the region's water cycle. The plant's inland location reduces direct marine impact, but its operations are crucial for protecting local creeks and groundwater from untreated waste.

The plant discharges into the Logan River catchment, which flows into Moreton Bay, a large coastal embayment in Queensland. Moreton Bay supports diverse marine life, including seagrass meadows and fish nurseries, and is an important migratory corridor for shorebirds. The plant's secondary treatment helps reduce nutrient and pathogen loads, protecting these downstream ecosystems from eutrophication and contamination.