We own and operate the storage dams, treatment plants, pipes and water meters that make the District's water supply network.
Our systems provide approximately nine million cubic metres of treated water annually to about 80% of the District's population.
Current dam levels
Whau Valley Dam
Last updated: 18 August 2022
The average daily production through our water treatment plants is approximately 25,000 cubic metres, all of which is treated to meet the Ministry of Health Drinking Water Standards. Treatment usually involves a combination of sediment removal, clarification, pH correction, filtration, chlorine dosing and UV filtration.
The Water Supply Bylaw protects the water supply and sets out customers' entitlements and responsibilities.
Water Supply Bylaw