Auckland’s groundwater supply comes from rain that percolates down through the soil or rock fractures, filling up the pores between grains of sand or the fissures in rock. These sources of water are known as underground aquifers.
In the Auckland region, some communities receive treated water that comes from groundwater or springs:
- Algies Bay
- Snells Beach
Find out more about groundwater.
Water from Onehunga Springs is pumped and treated, and can supply 21 million litres a day. It mostly supplies the Onehunga community, but it is part of the metropolitan network. While water from our Onehunga Springs is not currently fluoridated, by 30 June 2024 we have been directed by the Director-General of Health Dr Ashley Bloomfield to install fluoride dosing systems at our Onehunga Water Treatment Plant. To read more about this decision, click here.
A historic photograph of the Onehunga Pump Station.