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What proportion of Auckland’s drinking water supply is sourced from the Hunua Ranges?

Answered Question 17687 (2026)
Question published
Reply lodged

Asked by

Rachel Brooking

Member for Dunedin · Labour Party

Question

  • What proportion of Auckland’s drinking water supply is sourced from the Hunua Ranges?

Answered by

Hon Simon Watts

Member for North Shore · National Party · Minister of Local Government

Answer

The proportion of Auckland's overall drinking water sourced from the Hunua Ranges is a matter under Watercare's responsibility. This information is publicly available on the Watercare website: https://www.watercare.co.nz/home/about-us/what-we-do/water-collection-treatment-and-monitoring/about-our-dams