TEAM was Engineer to the Contract for QLDC’s expansion of Wānaka Wastewater Treatment Plant. This project was designed to be net-positive in terms of environmental impact. The expansion uses a sequencing batch reactor (SBR) fill-and-draw activated sludge system for wastewater treatment, and high-efficiency oxygen transfer to reduce organic matter in the wastewater. The process produces grey water which is dispersed through multiple points and used to irrigate the surrounding farmland.