The New Plymouth Wastewater Treatment Plant was built in 1984 and is located in the eastern area of New Plymouth.
The plant takes raw sewage and trade wastes from New Plymouth City, Bell Block, Inglewood, Waitara and Ōākura. It uses a biological treatment process known as activated sludge aeration to produce a high quality effluent. The clean effluent is discharged to the Tasman Sea via a 480m ocean outfall.
The quality of the water leaving the plant is one of the cleanest in New Zealand and well within the New Zealand standard for safe swimming and seafood gathering.
NPDC has a monitoring plan as a special condition of its resource consent to discharge treated municipal wastewater from the New Plymouth Wastewater Treatment Plant through a marine outfall into the Tasman Sea. Included in this plan is the monitoring NPDC undertakes at the plant, the monitoring TRC undertakes of the receiving environment and the peer review by an independent, suitably qualified expert to ensure that the monitoring programme is still appropriate once every five years, which is also a special condition on the consent.
New Plymouth Wastewater Treatment Plant Monitoring Plan - March 2022
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Page last updated: 01:56PM Mon 11 July 2022