Huia water treatment plant replacement - Manuka Road, Waima

Planning is underway to build a water treatment plant and two storage reservoirs in Waima, west Auckland.

Start–finish: 2016–2023
Location: Woodlands Park Road, Waima (Titirangi)
Status: Planning

Planning is underway to build a water treatment plant and two storage reservoirs in Waima, west Auckland. The treatment plant will replace an existing plant that was built in 1928 and is reaching the end of its operational life. The reservoirs will increase the volume of water stored locally, improving the resilience of the wider water network and accommodating daily demand fluctuations. 

As with the existing plant, the new plant will treat water from four dams in the Waitakere Ranges. The water produced by the plant will feed into Auckland’s metropolitan water supply network, meeting up to 20 per cent of the city’s water needs. This means it benefits the wider Auckland community.

The primary objective of the project is to replace the ageing plant. In doing so, we will ensure the continued resilience of Auckland’s metropolitan water supply network. This network is served by five treatment plants, numerous reservoirs and pump stations, and a highly-connected network of pipes. It means that if one treatment plant has an operational issue, the other treatment plants can meet the city’s water needs. Huia Water Treatment Plant is a vital part of this network.

The new plant will offer more advanced treatment processes and will be easier to maintain than the current plant. It will be carefully laid out to ensure staff can access each treatment process safely and easily.

What’s happening now?

The land we plan to build on is owned by Watercare and has been designated for water supply purposes since 1972. This designation means we are able to build a water treatment plant and reservoirs there at any time subject to Auckland Council reviewing and commenting on our outline plan of works. Our outline plan of works will show the proposed buildings and layout of the plant.

However, we need to seek resource consents for activities that will enable us to carry out construction work. For example: earthworks, stream works and vegetation removal.

In May 2019, we submitted our resource consent application to Auckland Council.

We have asked the council to notify the public of our application. This is because we want to give everyone the chance to have their say.

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Have your say About the proposed plant Engaging with the community

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The current Huia Water Treatment Plant was built in 1928.