North Grafton Wastewater Treatment Plant, Grafton, New South Wales

North Grafton wastewater treatment plant is located in Grafton, New South Wales, Australia, within the Clarence Valley Council area. The facility serves a population of approximately 15,288 and has a designed capacity of 1.00 ML/day, indicating it is a medium-sized plant for the region. As an Australian plant, it operates under the national regulatory framework administered by the New South Wales Environment Protection Authority (EPA). Plants of this scale are typically required to meet secondary treatment standards and comply with discharge licenses that protect local water quality. The plant is expected to adhere to state-level environmental regulations. The plant discharges treated wastewater into the local environment, ultimately contributing to the Clarence River system. This river flows into the Pacific Ocean near Yamba, supporting diverse aquatic life and estuarine habitats. The plant plays a key role in protecting downstream ecosystems from untreated sewage.

The plant's treated effluent enters the Clarence River catchment, which drains into the Pacific Ocean via the Clarence River estuary. This watershed supports significant biodiversity, including migratory fish and waterbirds. The estuary is ecologically sensitive, with seagrass beds and mangrove forests that rely on good water quality. Effective treatment at North Grafton helps maintain the health of these downstream environments.