Wellington Water is building a new underground pump station in Inglewood Place, off Taranaki Street. As part of the upgrade of the CBD wastewater network, the upgrade to the Taranaki Street Pump Station is to ensure future resilience, support population growth and protect the environment.
This pump station will collect and transport wastewater. It will move wastewater from a gravity pipe (no pressure) and pressurise 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.
Work excavating the 9m deep shaft started 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 starting 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.
Wakefield Street rising main
A new rising main (pressurised pipe) is being built along Wakefield Street as part of the major Wellington CBD renewals programme.
This new rising main will deliver many benefits including increasing the capacity and resilience of the CBD’s wastewater network and providing additional back-up in the network and lowering the contamination risk to the harbour.
Stage one was completed in December. The construction programme for stage two, the remainder of this new rising main, will commence in September following the 2023 FIFA Women’s World Cup.
Victoria Street rising main