Warkworth to Snells transfer pipeline

Project overview

We are tunnelling more than five kilometres of new pipeline from Lucy Moore Memorial Park to the new wastewater treatment plant. It is made up of 1,550 metres of rising main (uphill) and 3,500 metres of gravity (downhill) pipe.

The pipes are protected by running through an outer thick steel pipe. The tunnelling is done deep underground by direct pipe tunnelling. This equipment was successfully used on several large wastewater projects in Auckland including the Army Bay and Snells-Algies wastewater outfalls. At some spots along the route there will be access shafts on private properties so we can check on the machine. The pipe is being designed to cater for population growth through to 2099.

How will the work affect you?

• Work hours is typically from 7.30am to 6pm Monday to Friday and may include Saturday

• While the work is carried out underground via tunnelling you may notice the following temporary changes:

• Reduced speed limits

• Pedestrian detours

• Driveway access for residents remains open during the works. In the unlikely event that we do need to restrict access to your property, you will be notified in advance with a separate notice.

• While the work may generate some noise, please be assured that it is kept to a minimum and within the allowable consented levels.