Where Your Water Comes From

Although there is some merging of boundaries, in general the following areas receive treated water from these catchments:

Catchment area Supply area Via treatment plant
Hunua Ranges and Waikato River
  • Manukau City
  • Takanini
  • Most of Auckland City
  • Marine suburbs of North Shore City
 Ardmore and Waikato
Waitakere Ranges
  • Waitakere City
  • South western suburbs of Auckland City
  • Western North Shore and Whangaparaoa/Orewa
Huia and Waitakere
Onehunga underground source
  • Onehunga
 Onehunga

Water Treatment Plants