Waterloo
Waterloo Water Treatment Plant
Eight wells supply water from the Waiwhetu aquifer, beneath Lower Hutt, to our Waterloo Water Treatment Plant, which was commissioned in 1981.
Water drawn from our wells has been underground in an airtight environment for more than 12 months, making it free from microbiological contamination.
The water that we take from the aquifer is safe to drink without any treatment, but has a low pH and is therefore relatively corrosive to pipes and fittings. We simply reduce the corrosiveness or acidity of the water with lime.
The natural level of fluoride is also adjusted to a level recommended by the Ministry of Health to promote dental health.
Waterloo has a maximum production capacity of 115 million litres of water per day, but typically produces about 60 million litres or roughly 40 percent of our total annual supply.
Water treated at Waterloo supplies Lower Hutt (apart from Manor Park and Stokes Valley, which are supplied from Te Marua) and, mixed with water from Wainuiomata, Wellington's business district and southern and eastern suburbs.