Water treatment and supply

Carrying water from the source to your tap, our vast networks include more than 9,000 kilometres of pipes
alt=" "

Each day we supply around 400 million litres of top-quality drinking water to the people of Auckland. The water is drawn from dams, rivers and aquifers. Before it reaches you, we remove suspended solids, dirt particles and harmful micro-organisms.

Water pressure and flow

In normal conditions we will provide residents with:

  • Water pressure of at least 200 kPa
  • A water flow rate of at least 25 litres per minute (based on 15mm residential water meter). Click here to learn more.
alt=" "

Treating water

Follow the process from raw water to drinking water.

alt=" "

Monitoring and testing

We check the water at every stage to ensure it meets Ministry of Health standards.

alt=" "

Drinking water quality

Your tap water comes from natural sources and is treated to high standards.

diagram of how pressure management works

Pressure management

How and why pressure management is used across our water pipes