Pay per drop: New water charges loom for city dwellers
Wednesday, 17 June 2026
Hard-to-stomach charges could be on the way if the new company in charge of drinking and wastewater approves a water meter roll-out.
IAWAI is the new council-owned company responsible for water and wastewater services in the Hamilton City and Waikato District Council areas.
It was established last year to jointly deliver efficiencies for the communities it serves and to align with Government policy and direction.
On Thursday, the independent board which governs the organisation will consider a report recommendation approving charging for water based on volumetric usage, following the results of a trial in Hamilton East.
The report says a trial across 200 properties highlighted the potential water conservation benefits of metering.
The meter data identified leaks on private property across 19% of the participating homes.
“Addressing these leaks enabled this group alone to prevent the loss of an estimated 5.1 million litres of treated drinking water every year,’’ the report says.
The trial findings say water meters are expected to reduce peak demand consumption by around 20-25%.
Waikato District properties already have metered water for residential and commercial properties.
Hamilton has about 4000 meters in commercial properties.
Under the Government’s Local Water Done Well legislation, IAWAI is required to move away from capital value charging for water within five years (currently Hamilton households pay for their share of water services based on the value of their home, rather than by how much water they use).
On Thursday the board will decide if it will accept recommendations to implement a four-year programme of work, culminating in the “full citywide roll-out’’ of water meters.
The roll-out will start with a larger trial in 2027.
However, with the billing system yet to be decided, Board documents say because the programme of work has a four- year duration, billing can be phased in.
No matter the billing system used, the documents expect the decision to be unpopular and IAWAI should be prepared for backlash from the community, businesses and individual Hamilton City councillors.
With a 15-year lifespan for water meters, the roll-out has been costed at $155.16m.
However, not doing so is even costlier.
Without improved water efficiency, demand will require accelerated investment in new infrastructure, of around $780m across 10 years and 30 years - costings that have “already been assumed in the capital programme of the draft Water Services Strategy’’.
The Board now have three choices to chose from.
It can proceed, defer the work for five years or do nothing.
Board documents acknowledge that public opinion over water metering was mixed during initial consultation but also points out that feedback from those involved in the Hamilton East trial was positive.
Other topics for Thursday’s meeting include formal adoption of the Water Services Strategy, including changes made following public feedback, as well as adoption of policies and the Schedule of Fees and Charges ahead of the “go-live” operational date of July 1.
The Strategy confirms a reduction in the water charge increases for this year previously forecast by both councils - down $91 for Hamilton households and $247 for those in Waikato District.
The strategy introduces an annual growth charge for new dwellings consented after 1 July 2026 as a contribution to the costs of growth.
The combined charge for water and wastewater services ($500 for a new dwelling and $250 for a new secondary minor dwelling – or “granny flat”) are applied to the property as an ongoing annual charge for 25 years.
The draft strategy projects the charge will generate $40 million over 10 years – costs which otherwise would fall to existing ratepayers.