The plant is currently recovering from a discharge into the sewer network that has disrupted the biological processes used to treat wastewater. These processes are critical to the plant’s operation, and their temporary impairment has resulted in increased odour emissions.
We are actively investigating the source of the discharge, while also working to stabilise the treatment process and minimise odour impacts on the community. It is expected that odour levels will gradually reduce over the next two to three weeks as the plant returns to its usual operating rhythm.
Upgrades currently underway at the Te Maunga WWTP are designed to improve the facility’s resilience to events of this nature in the future. Importantly, treated wastewater continues to be safely discharged to the ocean in compliance with consent and regulatory standards.
Council acknowledges the disruption caused to residents and appreciates the community’s patience while recovery efforts continue.