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

Our main Tunnel Boring Machine Hiwa-i-te Rangi has arrived at our Haverstock Road site in Sandringham. She broke through the shaft wall 50-metres beneath Auckland. Domenica is now on her last drive, travelling 300-metres from Rawalpindi Reserve to Norgrove Avenue in Mt Albert. Then, link sewer B will be bored with just the surface works to complete over the next 12-18 months. At Keith Hay Park on the new sewer connector, we’ve established five of our seven sites for new manholes and our mini-Tunnel Boring Machine has completed three of her six drives.

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.


  • Tues 23 Apr, all day: YMCA holiday programme, Mt Albert War Memorial Park (Rocket Park)

  • Tues-Fri, 23-26 April, all day: MOTAT holiday experience

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

Button that takes you to the main Watercare website