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We are extending the existing stormwater network to create separate stormwater and wastewater networks.
This project is part of the Western isthmus water quality improvement programme and will be delivered in partnership with Watercare.
Construction started in 2024 and will take approximately nine years to complete.
The Waterview catchment is currently serviced by aging infrastructure dating back to the early 20th century. The pipes carry both wastewater and stormwater.
Usually, the network carries the wastewater to the treatment plant. During heavy or long-lasting rain, the system can overflow and release stormwater mixed with diluted wastewater into Oakley Creek and the Waterview Inlet.
The project is designed to reduce these overflows to 2-5 spills a year. This will improve public health by significantly reducing waterway contamination.
The new network will:
We will use both traditional trench digging and trenchless methods to construct:
Map of the Waterview separation project.
This project involves upgrading parts of the private and public stormwater systems in the area.
Wherever possible, we aim to place the public stormwater system on public land, such as within the road reserve.
We will contact you in advance if we need to construct public stormwater assets like pipes, manholes or outfalls on your property. If a contractor needs to construct private drainage on your property, they will seek your permission weeks or months in advance.
The cost of both the private drainage and public drainage works is covered by the Water Quality Targeted Rate.
There is no extra cost to property owners.
Find out more about the Western isthmus water quality improvement programme.
Email waterviewHW@aucklandcouncil.govt.nz if you have any questions about the project.