South-west wastewater upgrade

Project overview

As the southwest of Auckland develops, we need to expand our wastewater treatment infrastructure to support population growth in Waiuku, Glenbrook Beach, Clarks Beach and Kingseat. Currently, these communities are served by local wastewater treatment plants.

Our plan has been to replace these plants with one larger facility that can meet the needs of 30,000 people.

Recent developments

In 2023, we purchased land in Glenbrook and lodged a Notice of Requirement with Auckland Council to designate it for wastewater treatment purposes. Council referred it to a panel of independent commissioners for review.

In late May 2024, the independent panel of commissioners recommended we withdraw our Notice of Requirement. After reviewing the commissioners’ feedback, we have decided not to pursue the designation of our land in Glenbrook for wastewater treatment purposes at this time.

Next steps

We will continue to work closely with the community to find a sustainable, affordable and appropriate long-term solution that enables the area to grow. Alternative options, including our Waiuku and Glenbrook sites, will be considered as we revisit the planning/ feasibility stage.

To support growth in the short to medium term, we are upgrading our Clarks Beach Wastewater Treatment Plant and constructing an outfall pipe into Waiuku Channel. See the project page for details.