NZ InfraWatch
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WATER
Wellington Water Infrastructure Renewals
Wellington Water / Greater Wellington RC · Wellington
Multi-year programme replacing Wellington's aging pipe network, including major trunk mains. Wellington suffers chronic water loss (~30% of supply) from leaking pipes. Programme running 2022–2030+. Critical for water resilience after 2022 January weather events.
B
73/100 · Likely to proceed
Completion Probability — likelihood this proceeds on roughly its stated timeline.
Funding statusweight 30%
Delivery stageweight 25%
Election / policy riskweight 20%
Govt priority alignmentweight 12%
Project scaleweight 8%
Delivery agencyweight 5%
Key facts
- Region
- Wellington
- Sector
- Water
- Status
- Under Construction
- Estimated value
- $2.4b
- Indicative completion
- 2030
- Funding status
- Part Funded
- Lead organisation
- Wellington Water / Greater Wellington RC
- Election risk
- Low
Election risk assessment
Critical aging infrastructure replacement. Bipartisan support for water safety.
Government priority alignment
MEDIUM — Aligns with Local Water Done Well; locally led renewal of critical assets.
Chronology
- 2018Wellington Water identifies critical aging infrastructure across the network; pipe failure rate increasing
- 2020Major pipe failures cause city-wide boil water notices. Urgency recognised
- 2021January floods damage key infrastructure. Wellington Water plan expanded
- 2022Multi-year renewal programme begins; trunk main replacements start
- 2024Major work on Orongorongo trunk main and pump station renewals
- 2030Phase 1 programme target — 30% network loss reduction goal