NZ InfraWatch
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WATER
Nelson Tasman Regional Water
Nelson City Council / Tasman District Council · Nelson
Regional water supply upgrades for Nelson and Tasman following severe water restrictions in 2021–2022. Options include new storage dams, water treatment plants, and interconnections between systems. No final decision on scope or funding.
D
46/100 · At risk
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
- Nelson
- Sector
- Water
- Status
- Planning
- Estimated value
- $450m
- Indicative completion
- 2030
- Funding status
- No Source
- Lead organisation
- Nelson City Council / Tasman District Council
- Election risk
- Medium
Election risk assessment
Depends on Local Water Done Well framework. Contested between National and Labour policy approaches.
Government priority alignment
MEDIUM — Depends on the Local Water Done Well framework; funding model contested.
Chronology
- 2021Nelson implements Level 4 water restrictions — worst water shortage in decades
- 2022Nelson-Tasman joint water security study confirms long-term supply deficit
- 2023Options assessment: Waimea Dam stage 2, new dam at Lee Valley, or interconnection considered
- 2024Preferred option feasibility study underway. Funding model under debate
- 2030Target for first new infrastructure to be operational