July – December 2020
Treatment plant upgrade at 241 Hunua Rd, and watermain construction will be carried out from 241 Hunua Road through Papakura
Auckland is in the grips of a severe drought. As part of our response we are bringing back into service the Papakura Water Treatment which sources water from Hays Creek Dam. We are also constructing a new watermain. This means that by December 2020 we will be able to supply Aucklanders with an extra 6 MLD (million litres) of Aa-graded drinking water.
What are the benefits?
- Ensuring we can continue to supply Aa-graded water that is compliant with the drinking water standards for New Zealand
- Increase resilience and operational flexibility of the water supply system
Treatment plant upgrade
The Papakura Water Treatment Plant located at 241 Hūnua Road was originally constructed in the 1950’s and treated water from Hays Creek Dam. It has been out of service for approximately 15 years, however, in response to the drought we are bringing it back into service. A new modular treatment plant is being constructed within the existing site and will be up and running in December.
Hunua Road traffic management
We are also constructing a new watermain that will ensure we can supply Auckland with water from the new water treatment plant. From late-July to November 2020, the new water pipe is being constructed along Hūnua Road, from the intersection with Dominion Road to the Papakura Water Treatment Plant at 241 Hūnua Road.
Traffic management will be in place during that time with one-way traffic operating. Updates will be provided on roadside digital messaging boards ahead of the construction area. As a precaution we will have traffic management controllers on site to ferry cyclists through the construction area. We do, however, recommend that cyclists use an alternate route during the construction period.
Please follow signage in place and take care around the construction area.
Why is the pipe being built along Hūnua Road and not through farmland? Why is it being built using open trenching rather than trenchless technologies?
Frequently Asked Questions
We are constructing a new water treatment plant and watermain as part of our response to the drought. This infrastructure is needed so we can provide additional water supply by December and assist with summer peak demand. Time constraints rule out the option of constructing the pipe through farmland as private land agreements take time. Due to COVID-19 and the scale of the work, trenchless technology would not be feasible as specialist equipment and staff are overseas, while some staff have been let go due to COVID-19. With quarantine requirements and strict border controls in place trenchless options are not feasible. In addition to the time constraints, there are hydraulic restrictions and areas of natural beauty (native vegetation) that mean open trenching through farmland is not possible.
How do we notify road users?
VMS (Variable Message Signs) digital boards are the most effective way to communicate with road users. These will be put in place in advance of the works, while we have already placed traffic notices in local newspapers. Facebook posts targeted to the Papakura and Hūnua areas along with letters to the wider community (including schools and cycling groups) have been be written to communicate that the works are taking place.
What traffic control will be used?
There will be traffic lights plus traffic controllers onsite 24/7.
How long will the wait be?
Specialist modelling was completed as part of the traffic management plan submission. At peak traffic times we anticipate your journey will be extended by 20-25 minutes. It is recommended you factor this into your travel time.
How are you working to ensure the pipe is constructed within the expected timeframe?
We have sufficient resourcing to install the pipe as quickly and safely as possible. Progress will be tracked, and additional resourcing will be sourced if required.
Any other questions?
Alternatively, you can contact us on (09) 442-2222
Want information about the drought?
Click here to find out more.