This plant will soon stop operating, with all wastewater being processed at the main Christchurch Wastewater Treatment Plant in Bromley.

When the treatment plant was constructed in 1996, wastewater was collected from Lyttelton, Rapaki, Corsair Bay, Cass Bay and Governors Bay for treatment at the Lyttelton Wastewater Treatment Plant.

 A project is on the go to redirect (pump) all of Lyttelton Harbour's wastewater to Christchurch's main treatment plant in Bromley.

The Lyttelton Harbour wastewater project will end the routine discharge of treated wastewater into the harbour, an important environmental milestone for our city.

So far, all of the wastewater from Rapaki, Corsair Bay, Cass Bay and Governors Bay is being redirected to Bromley, with the serviced area of Lyttelton soon to follow.

For more information about this please see the Lyttelton Harbour wastewater scheme project webpage.


Wastewater receives primary and secondary treatment within the plant followed by an ultra-violet (UV) disinfection process before being discharged through an outfall pipeline into Lyttelton Harbour.

Sludge is regularly removed and transported to the Christchurch Wastewater Treatment Plant for processing into biosolids.


The main resource consent for discharge to the harbour (CRC 940390A) expires in 2029. 

Recent Sample Results