Woodville Wastewater Treatment Plant, Manawatū-Whanganui, New Zealand

The Woodville wastewater treatment plant is located in the town of Woodville, within the Tararua District of the Manawatū-Whanganui region in New Zealand's North Island. The plant serves a population of approximately 1,657 residents, reflecting a small community scale. The plant provides secondary treatment, which is the standard biological treatment stage required under New Zealand's regulatory framework. The Resource Management Act (RMA) governs wastewater discharges, and plants of this size are typically subject to regional council permits that set discharge quality standards. The plant's discharge volume is reported at 556.92 megaliters per year. The treated effluent from Woodville is discharged into the local catchment, which ultimately drains into the Manawatū River system. The Manawatū River flows southwest to the Tasman Sea near Foxton. The river supports diverse aquatic life and is an important waterway for the region's ecology and agriculture.

The Woodville plant discharges into the Manawatū River catchment, which flows into the Tasman Sea. The river system supports native fish species and provides habitat for waterfowl. The surrounding area is predominantly agricultural, so the plant's nutrient removal helps protect downstream water quality in the Manawatū River estuary.