This page contains information about the new drinking water treatment plant which is being built nearby to the Whau Valley Dam.
6/11/2019 3:59 p.m.
We have some of the best drinking water in the country and we want to keep it that way.
That’s why we are continuing to invest in one of our biggest ever projects with a $30 million new Whau Valley Treatment Plant.
Our current plant was built in 1953. It has served us well but needs replacing.
Once built, the new plant will process up to 22,000 cubic metres of drinking water per day from the Whau Valley Dam and Hatea River, compared to the current 15,000 cubic metres. The plant is being built nearby the dam on Whau Valley Road.
The new plant will future-proof water supply for our growing District, featuring new filtration systems and the latest technology.
Construction is underway and is scheduled for completion in October 2020, which will be followed by a commissioning period. This is expected to take several month to ensure all parts of the treatment process are working well together.
A digitally rendered image of the Whau Valley Water Treatment Plant