Dixon Street wastewater upgrade
Update 31 May 2018
Wellington Water is undertaking a wastewater upgrade project on behalf of Wellington City Council in Dixon Street and Victoria Street. This area of the Wellington CBD has been designated as a transformational growth area in Wellington City Council’s urban growth plan, and it is estimated that up to 7,300 new dwellings could be built here. A new wastewater pumping station and new wastewater mains pipes are needed, adding capacity to service this increased population. For more information view our Dixon Street and Victoria Street wastewater upgrade flyer under related documents below.
When is it happening?
Work will begin on 14 June 2018, and is scheduled for completion in October 2018. The first stage of work is the upgrade to the pump station. During this stage of construction, an area of public pavement/plaza near Feltex Lane will be closed while the new pump station is installed underground. It will then be reinstated following the installation. See map below.
The hours of work will be between 7.30am and 6.00pm Monday to Saturday.
During the project, new wastewater mains will be installed on Dixon Street. At this stage of the work, traffic management measures will be put in place on parts of Dixon Street, including lane closures and temporary reductions in parking spaces. Affected residents and business owners will be informed, by receiving a customer care letter, and an invitation to an informal drop-in session where they will be able to provide feedback and ask questions.
Frequently asked questions:
What work is being done here?
Wellington Water, on behalf of Wellington City Council, is installing a new pump station and upgrading the wastewater pipes that serve the area.
Why is this work taking place?
Wellington Water’s role is to ensure the region’s three water networks (drinking water, wastewater and stormwater) are able to cater for growth, and that our customers receive a consistent, reliable and sustainable service. This wastewater network upgrade is vital to support the Council’s plan for the area to grow as a residential and commercial hub, as outlined in its Urban Growth Plan.
Growth is already being evidenced by the new apartment blocks under construction (Victoria Precinct and 111 Dixon Street). Upgrading the wastewater infrastructure now will cater for this immediate growth and sustained development over the coming years.
By locating the pump station at Volunteer Corner, we are able to limit disruption through construction and minimise the water network’s long-term footprint by not constraining the potential of developable land. This location was agreed with the WCC City Engineer as the preferred location out of two potential sites.
What will it look like when finished?
The pump station will be entirely underground, and the paved area near Volunteer Corner will be fully restored to its current condition. Once completed, the only above-ground sign of the new wastewater pump station will be an above ground air vent, and access manholes. There will also be parking restrictions indicated with painted markings on the pavement. This has been agreed with WCC’s Urban Design team.
How does the system work?
The new pump station and pipe will collect and pump wastewater from the local catchment area to the wastewater interceptor main near Willis Street. The interceptor main carries wastewater to the Moa Point treatment plant. The new layout is more efficient than current wastewater flows around this area of the city.
Will there be any long-term impacts, such as noise, associated with the new infrastructure?
The pump station will be contained within an underground chamber meaning it will operate with no noticeable noise.
Why wasn’t this work incorporated within the Victoria Street transformation project in 2014/15?
These works were delivered in part to encourage further investment and development in the area – and further underground services upgrades were always envisioned to support this. That development, as evidenced by the new apartment builds, has come soon after the works’ completion is a positive endorsement of this approach.
How come this wasn’t done before all the effort put into doing up Volunteer corner?
A key aim of work such as streetscaping is to encourage further investment and development in the inner city. While the need for further underground services upgrades was always envisioned, timing is tricky thing – building too early is not necessarily the best use of ratepayer money when there are a lot of other pressing priorities, and there is no certainty that “they will come”. At the time of the street upgrade there was no indication as to when the additional infrastructure might be required.
Inner city development plans and proposals such as new apartment builds have picked up strongly over the past couple of years (suggesting that improving inner city streetscapes does make a difference when you get it right). Importantly, this growth also provides a funding mechanism to support the delivery of the new infrastructure.
We’ll be counting on the team to put things back as good as or better than they were before.
How will you manage the impacts of construction?
Our construction methodology for the new pump station, which uses pre-cast concrete segments, has been selected based on it being quieter and quicker than other options, and requiring a smaller construction compound.
The noisiest works – the removal of concrete pavers – will take place up front in the first week. Following this, as work continues on the pump station, other construction areas will change as work progresses on different parts of the pipe. These works will be supported by approved traffic management plans, which will include a temporary reduction in parking spaces.
The project is trialling a new traffic monitoring system called MOOVen (mooven.io) which uses Google Maps traffic data to measure any delays around the area of our work. Our work on roads will take place outside peak traffic, but if we are holding things up our project team will know about it early, and be able to measure and respond to the impact. We’ve been using MOOVen in advance of construction starting, giving us a baseline understanding of traffic flows to compare against flows during the work.
We’ll be in touch regularly with our neighbours over the construction period, which we anticipate will last up to six months, and be communicating more widely with motorists and pedestrians through signage and social media. Our team will also be available to answer any queries or concerns by phone or email.
- Wellington Water Customer Care Representative Tristan Reynard 027 449 5536
- Consultant GHD Consultants Joel Rowan 027 231 4318
- Contractor Brian Perry Civil Daniel Doyle 027 801 9042
- Wellington City Council, 04 499 4444 (24 hours)
We are managing this work on behalf of Wellington City Council and are committed to providing a safe and reliable water supply network that protects public health.