Whakaraupō / Lyttelton Harbour Wastewater
This scheme pumps wastewater created by the people living and working in the area, through the Lyttelton Tunnel to Bromley.
Diamond Harbour wastewater scheme
Serves the immediate Diamond Harbour community and round the bay to include Church Bay and Charteris Bay.
Akaroa Harbour Wastewater Scheme
Akaroa Wastewater Treatment Plant is located at Takapūneke to the south of Akaroa township. It treats wastewater from Akaroa.
Duvauchelle Wastewater Treatment Plant
Serves a community of about 250 permanent residents including the Ngaio Point subdivision.