The Central Interceptor is a wastewater tunnel that will run between Western Springs and the Mangere Wastewater Treatment Plant. The tunnel will run underground for 13 kilometres and will be at a depth of between 22 and 110 metres, as shown below.
This project will be tendered soon!
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![](https://i0.wp.com/www.ardeo-solutions.com/wp-content/uploads/2018/04/Central-interceptor-route.png?resize=840%2C413)