Kerepēhi Raw Water Upgrades

Share Kerepēhi Raw Water Upgrades on Facebook Share Kerepēhi Raw Water Upgrades on Twitter Share Kerepēhi Raw Water Upgrades on Linkedin Email Kerepēhi Raw Water Upgrades link

March 2026 Update

After a lot of planning and hard work, the finish line is almost in sight. The watermain is connected and working well, and the two raw water tanks are also now in service.

The focus is now on completing the remaining upgrades to the Waihou intake pump station. The new discharge pipework is already operational, and the new pump has been installed. The final steps are to commission the pump and prime the system.

Inside the Waihou pumpstation...New discharge pipework

Why are the two tanks needed?

At its previous processing throughput, the water treatment plant held about 24-hours of raw water reserves. The water supply was influenced by the tidal conditions of its source, the Waihou River. It could also be adversely affected by severe weather events.

The two new tanks add around four million litres of additional storage, providing a continuous supply and significantly reducing the possibility of a water shortage.

Construction was carried out by Reliant Solutions Limited, who also constructed the two treated water storage reservoirs at the site in 2018. The two new tanks were constructed simultaneously at the back of the treatment plant.

Feel free to take a look at the timelapse video featured on this page. This shows the construction process from the ground preparations to the finished tanks.

What's happening with the supply pipes?

The previous 5.3km-long water pipe that supplies raw water had come to the end of its life and has been replaced with a wider pipe. The switch to the new pipeline has now been completed.

Above: The red and blue line is the water main which has been replacedThe budgets were approximately $2.7 million for the tanks and $6.05 million for the pipeline.

We’ll keep you up to date right here on every step of the upgrade.

Alternatively, why not check out our Antenno app and sign-up to stay informed?

You can also keep up with the latest news throughout the Hauraki District by signing up for our newsletters.

March 2026 Update

After a lot of planning and hard work, the finish line is almost in sight. The watermain is connected and working well, and the two raw water tanks are also now in service.

The focus is now on completing the remaining upgrades to the Waihou intake pump station. The new discharge pipework is already operational, and the new pump has been installed. The final steps are to commission the pump and prime the system.

Inside the Waihou pumpstation...New discharge pipework

Why are the two tanks needed?

At its previous processing throughput, the water treatment plant held about 24-hours of raw water reserves. The water supply was influenced by the tidal conditions of its source, the Waihou River. It could also be adversely affected by severe weather events.

The two new tanks add around four million litres of additional storage, providing a continuous supply and significantly reducing the possibility of a water shortage.

Construction was carried out by Reliant Solutions Limited, who also constructed the two treated water storage reservoirs at the site in 2018. The two new tanks were constructed simultaneously at the back of the treatment plant.

Feel free to take a look at the timelapse video featured on this page. This shows the construction process from the ground preparations to the finished tanks.

What's happening with the supply pipes?

The previous 5.3km-long water pipe that supplies raw water had come to the end of its life and has been replaced with a wider pipe. The switch to the new pipeline has now been completed.

Above: The red and blue line is the water main which has been replacedThe budgets were approximately $2.7 million for the tanks and $6.05 million for the pipeline.

We’ll keep you up to date right here on every step of the upgrade.

Alternatively, why not check out our Antenno app and sign-up to stay informed?

You can also keep up with the latest news throughout the Hauraki District by signing up for our newsletters.

Page last updated: 11 Mar 2026, 01:21 PM