Tinaroo Wastewater Treatment Plant, Kairi, Queensland

Tinaroo wastewater treatment plant is located near Lake Tinaroo in Kairi, within the Tablelands Regional area of Queensland, Australia. It serves a small population of 878 residents, reflecting its role in a rural community setting. The plant provides secondary treatment, which is the standard biological treatment level for municipal wastewater in Australia. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant discharges an annual volume of 227.31 megalitres, consistent with its small service population. The treated effluent is released into the local environment, likely contributing to the Lake Tinaroo catchment, which is part of the larger Barron River basin. This area supports diverse aquatic life and is important for regional water resources. The plant's operations are regulated under Queensland's environmental protection framework, ensuring compliance with discharge standards to protect downstream ecosystems.

The plant discharges into the Lake Tinaroo catchment, which feeds into the Barron River and eventually flows to the Coral Sea. The lake is a man-made reservoir used for irrigation and recreation, supporting a variety of fish and bird species. Downstream, the Barron River passes through ecologically sensitive areas before reaching the coast, making nutrient and pathogen control critical for maintaining water quality.