Council & City

Duplicate water main

To protect Palmy's water supply for the future, we’re building another water main pipe from the treatment plant to our Ngahere Park Reservoir by the Manawatū River.

Photo shows Palmerston North's water reservoir in the Turitea Valley.

Our main water supply comes from the Turitea Dam at the northern end of the Tararua ranges. It provides about two-thirds of our water. After it’s treated it then travels through a major pipe to the reservoir, where a network of pipes takes the water to your homes and businesses.

To protect our water supply for the future, we’re building another water main pipe from the treatment plant to the reservoir. This will ensure that if major operational problems or an earthquake occur, we can continue to supply water.

The current pipe is 525mm in diameter, made of steel and lined with concrete.

The new pipe is 450mm in diameter and is made of a type of thick plastic material which can move in an earthquake.

In 2020 we installed the pipe from treatment plant to just past its entry gates. This year the pipe will be installed down the road and then to our Ngahere Park Reservoir.

During construction we’ll be talking to residents on Turitea Road about what we're doing and how that may affect access to their homes at certain times of the day during this period. We’ll work with them to keep any impact to a minimum.

The rest of the city’s water comes from bores scattered around the city. Currently, these bores only provide water to some suburbs, but in an emergency can supply the whole city.


  • 2020: Construction of the duplicate main from Turitea Water Treatment Plant to its entrance gates.
  • Jan to October 2021: Construction between Turitea to Ngahere Park Reservoir.

We’re committed to supplying some of the best water services in the country

Our Three Waters Plan outlines our priorities over the next few years so we can continue to provide and future proof a clean and healthy water supply.