Hamilton-Waikato water merger faces countdown risk
Friday, 19 December 2025
A tight timetable is in place for the merger of Hamilton City and Waikato District councils’ water services, with key decisions required early next year.
The deadline for a transfer agreement was flagged as a key risk at the recent IAWAI – Flowing Waters board meeting, as was the tight time frame for a new water plan.
February milestones are looming to keep both aspects on track for the official July 1 transfer.
Interim chief executive and executive chair IAWAI Establishment Board Kevin Lavery said he was “twitchy” about the time frame for the new water services strategy.
This and the council transfers were the big decisions for IAWAI.
The team had a lot on, and he was exploring contingencies if things did not track as planned.
“I’m a little bit worried we might end up needing a bit more time to consider certain aspects of the water services strategy, because they are coming in late.”
The strategy needed to be approved by July.
The draft would be submitted to the board in February, then shared with councils and Waikato-Tainui by March 1.
Formal public consultation would follow in March and April.
A progress update in the meeting agenda said the board planned to reduce the projected 22% average increase in water charges.
IAWAI was considering a combined water and wastewater capital investment programme of approximately $3 billion over the next 10 years, with a significant portion allocated to support growth
Key risks were delays in financial modelling, and delays in government economic guidelines.
“The Commerce Commission is developing an information disclosure regime for water service providers…the commission must publish its final determination on the disclosure requirements by 26 February 2026.”
Board member Dave Chambers said he was sure the board would move quickly, but highlighted the second risk.
“We’ll have to have done a plan and not know what the economic regulator might necessarily require.”
The meeting agenda also described the agreement for the legal transfer of water infrastructure and all related resources to IAWAI.
This would come to councils for approval in February.
“The biggest risk would be failure to agree to the transfer agreement in early 2026,” it said.
If this was not done it would cause “legal, reputational, and financial risk”.
There were a range of complex issues to be resolved in relation to the transfer of land held under the Reserves Act, but used exclusively for waters purposes, the agenda said.
Legal advice was being sought to ensure that the most straightforward approach to transfer could be found.