This scheme serves the immediate Governors Bay community of around 750 residents who live along Main Road to approximately 350 metres short of Church Lane.

The treatment plant is located approximately 400 metres south of the Governors Bay wharf, above the foreshore.


Wastewater from Governors Bay receives primary and secondary treatment within the plant followed by ultra-violet (UV) disinfection, before being discharged through an outfall pipeline into the harbour. Sludge is regularly removed and transported to the Christchurch wastewater treatment plant for processing into biosolids. The treated wastewater is discharged to Lyttelton Harbour between Quail Island and Rapaki via an outfall pipe.

The consent

The main resource consent for discharge to the harbour (CRC101760) expired in December 2018.

The Council is underway with the Lyttelton Harbour wastewater scheme, which is a programme of work to be completed in 2022 that will see this plant decommissioned, with all of the wastewater from Governors Bay, Lyttelton and Diamond Harbour being pumped directly to the Christchurch wastewater treatment plant.

Due to construction difficulties, the original timeframe for completion of December 2018 could not be achieved, so a new application has been lodged with Environment Canterbury for a short term consent for the continued discharge of treated wastewater from the Governors Bay wastewater treatment plant to Lyttelton Harbour.

Consent monitoring

Resource consent CRC101760 sets out requirements for monitoring treated wastewater and the area receiving the discharge (receiving environment). Samples are taken and analysed on a regular basis. The volume of wastewater leaving the plant is recorded continuously. Together these provide an indication of how the plant is performing and whether there are any potential adverse effects of the discharge on human health or the environment.

Monitoring data is provided in the tables and graphs linked to below:

Annual report on monitoring data: