Central Interceptor

A super-sized tunnel that will reduce wastewater overflows into central Auckland waterways

Watch the video: The Central Interceptor's greatest hits so far!

Where are our TBMs now?

Project milestone

We’re underway with an extension to our CI project, the CC9 sewer connector works, in Keith Hay Park, Mt Roskill. This will supply services to new housing developments in the area. These important works will not only add additional network capacity but will also help prevent wastewater overflow into local waterways. Our mini-Tunnel Boring Machine Victoria, will shortly be launched from a new manhole in the Park, boring from Richardson Rd to our main CI site in the Park.

CI discovery centre

Where’s the Discovery Centre?

The Discovery Centre has a fun virtual reality experience, digital and outdoor games and a movie ride as well as lots of project information. Check out the list below of where it will be.


  • Sun 3 March, 2-4pm: Out & About Fun Day, Keith Hay Park, Mt Roskill

  • Sat 9 and Sun 10 March, all day: Pasifika, Western Springs Park

Why we're building the Central Interceptor

Read about the benefits this super-sized wastewater tunnel will deliver for Auckland

Constructing the Central Interceptor

Find out more about our construction sites

Engaging with our communities

We want to be a good neighbour while our project is underway

Sustainability and environment

On the Central Interceptor project, sustainability is at the heart of all we do

Keep up with us on social

Read about project milestones on Facebook or LinkedIn

Find out more

Read the latest newsletters, media releases and consent documents associated with the project

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