What's happening?

As the north-west of Auckland expands, so does the amount of wastewater collected and treated. The Northern Interceptor is a new wastewater pipeline that will be build in stages, depending on how fast the population grows. Currently, wastewater from Massey North, Whenuapai, Hobsonville, Kumeu, Huapai and Riverhead flows to the Māngere Wastewater Treatment Plant. The new pipe will redirect this flow to the nearby Rosedale Wastewater Treatment Plant in Albany. Future stages of the pipe will be constructed depending on population growth in the area.

What are the benefits?

  • The new pipeline will free up the Mangere treatment plant to cater for future growth. 
  • The Rosedale Wastewater Treatment Plant has the capacity to manage the anticipated growth in the northern area up until 2070.

Latest update:



Please contact Watercare: 

Phone: (09) 442 2222

Email: NIProject@water.co.nz