Wastewater is transported along the wastewater network to a wastewater treatment plant where it’s treated, before being discharged to sea.

There are four wastewater treatment plants in the region:

Moa Point (Wellington)

Clearwater Moa Point Plant

Seaview (Upper Hutt and Lower Hutt)

Seaview WWTP 


Porirua (Northern Wellington and Porirua)

Porirua WWTP cropped and low res2


Western (Karori)

western WWTP cropped 

True or Poo treatment

The Treatment Process

All treatment plants are slightly different, but the process is generally similar.   Read more