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Auckland Watercare: Water Supply Upgrades
Watercare Services (Auckland Council) · Auckland
Watercare's ten-year capital programme: new treatment capacity, trunk main replacements, wastewater upgrades and the $1.12b Huia plant replacement, its largest single piece. Watercare lifted the programme to $15.2b in late July 2026, up from $13.8b. The figure shown is the indicative water-supply share, not the whole programme.
Data current as at 16 Sept 2026, when the pipeline was last checked against its source.
Key facts
- Region
- Auckland
- Sector
- Water
- Status
- Under Construction
- Estimated value
- $2.1b
- Indicative completion
- 2031
- Funding status
- Fully Funded
- Lead organisation
- Watercare Services (Auckland Council)
- Election risk
- Safe
Election risk assessment
CCO-funded water supply infrastructure, largely insulated from government policy change.
Government priority alignment
MEDIUM: Aligns with locally led water delivery under Local Water Done Well; CCO-funded.
Chronology
- 2020Watercare 30-year strategy released: identifies $17B investment need over 30 years
- 2022Huia Water Treatment Plant Stage 2 upgrade begins construction
- 2023Major trunk main renewal programme underway across Auckland network
- 2025Rosedale wastewater plant upgrade completed. New Pukekohe reservoir commissioned
- 2026Watercare unveils a $15.2b ten-year programme, up from $13.8b, including about $4b of new and accelerated investment (late July); the Commerce Commission says it will scrutinise it and will set the first price-quality path, PQP28, for when the charter ends in mid-2028
- 2028expectedSouthern water supply network upgrades complete
- 2031expectedCurrent capital programme target
Source
Watercare ↗ · Watercare / NZ Herald ($13.8b 10-year plan) ↗ · RNZ: Commerce Commission to scrutinise Watercare's $15.2b plan ↗ · Commerce Commission: keen to inspect Watercare's $1.5bn-a-year plans ↗