Wellington Cross-Harbour Pipeline

Detailed Planning
Wellington Cross-Harbour Pipeline

The Cross-Harbour Pipeline will see construction of an alternative bulk water supply pipeline from the Hutt Valley across Wellington Harbour to Wellington City. The project aims to improve water supply resilience in the earthquake prone area. 

Key Dates

2022 Expected Construction Commencement
2025 Expected Construction Completion

Funding contributions

Local Council


Mar 2018 The Greater Wellington Regional Council committed NZ $116 million for the project in its Long Term Plan 2018-28.
Apr 2018 A marine survey was conducted for Wellington Harbour to inform the potential location of the pipeline.
Nov 2018 Exploratory bore drillings into the harbour floor found that an aquifer option was not suitable for meeting water resilience goals. The study also confirmed the Cross-Harbour Pipeline as the preferred option.
Jan 2020 Undersea geotechnical investigations were completed for Evans Bay and Lowry Bay.
Estimated Total Cost
Water & Sewerage
Procurement approach
Unconfirmed |
New Zealand |
Project website
Cross-Harbour Pipeline