Taranaki Street Pump Station
On behalf of Wellington City Council, we are building a new pump station in Inglewood Place, off of Taranaki Street.
If you have any questions about this work, please contact:
Wellington Water, 04 912 4400
Latest Updates
Watch crews successfully put the 88-tonne lid on Wellington's new Taranaki Street pump station in this time-lapse video.
Work excavating the 9m deep shaft commenced in the New Year and has now been completed. This was done in two stages....
Current Status
The pump station has now been completed and commissioning and reinstatement works are underway.
Once reinstatement works have been completed, works will commence connecting the pump station to the existing network.
Why are we doing this?
This project is part of a major upgrade of the CBD wastewater network. The upgrade is designed to ensure future resilience, support population growth and protect the environment.
Check out other projects in this programme of work.
What we're doing
Wellington Water is building a new underground pump station in Inglewood Place, off Taranaki Street. Starting July 2022, construction will take approximately 12 months.
A pump station collects and transports wastewater. It moves wastewater from a gravity pipe (no pressure) and pressurises it so that it can travel to the main pipe (the interceptor) and then to the Moa Point Wastewater Treatment Plant.
Pump stations are usually built underground. There are lot of them, and they are very important to the network.
This is what it will look like:
Construction of the pump station will not affect road users as it’s in the parking on Inglewood place.
All Updates
A 140-tonne mobile crane was used on the tight central city site in Inglewood Place to lift each of the lid’s four sections into place from a radius of just 14 metres.
To achieve this tight radius, the crew had to remove some site hoarding and storage containers to widen the slip lane and get the delivery trucks closer to the crane.
They also brought in large ‘swamp pads’ to help spread the load generated through the crane’s stabiliser legs or ‘outriggers’ for the heaviest 26 tonne section of the lid.
As Project Engineer Jacob Walmsley says, the other key to success was the great work of their Otaihanga precast team who set out all the formwork to the correct radius and ensure all the lids would fit.
Work excavating the 9m deep shaft commenced in the New Year and has now been completed. This was done in two stages, with the first part down to 5m below ground where a structural ring beam and shotcrete wall were installed to the inside of the piles.
The dig then went a further 4m down to the bottom of the shaft where the crew is now commencing work to install the 800mm thick steel reinforced concrete floor. This will be completed over the next few weeks starting with installing the underfloor structural drainage component followed by the concrete floor pour and steel reinforcing.
We really appreciate your patience with this project!
Piling is now completed for the Taranaki Pump Station and the crew is getting ready to start excavation. Since New Year work has focused on removing the temporary works required for the piling operation and reinforcing the piles with a capping beam to increase the rigidity of these deep foundations and reduce movement.
The excavation will be done in stages. The first part will go to 5m below ground where a structural ring beam and shotcrete wall will be installed to the inside of the piles. The dig then goes a further 4m deep to install the floor.
In the coming month, the crew will also be installing some excavation shoring on the Taranaki Street side which will allow the pump station outlet pipe to be installed.