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What does IAWAI mean for you?
IAWAI has been created for you. Following public consultation in 2025, Hamilton City and Waikato District Council have jointly built a more efficient water services organisation that can invest more over time while keeping costs as low as possible.
Why IAWAI?
Our scale, and our greater access to debt funding, means we can spread the costs of infrastructure over a longer period, reducing the burden on today’s ratepayers and ensuring those in the future pay their fair share.
Challenges ahead
We have significant challenges to address. Water and wastewater costs are rising, so we need to find savings without cutting the essential services we all rely on. We need to support new homes and businesses without expecting all households to fund that growth.
Much of our network is ageing and needs a lot of work. Decades of under-investment mean tough choices because we can’t afford to fix everything at once. Ageing infrastructure can result in leaks and environmental damage. Maintenance is essential to protect our environment, our awa (river) and our moana (sea).
Our next water services strategy
Later this year, we’ll ask you about our next Water Services Strategy. We’ll have full public consultation early in 2027 and we want your views. Some big decisions need to be made and changes are coming in the years ahead, but we have time, and we’ll work together every step of the way.
Learn more about Water Services Strategy 2027-2037
Fees and charges
Read about IAWAI fees and charges for all customers in Hamilton City and Waikato District.
What does 'your water' mean?
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Drinking water
We treat and deliver safe, clean water to homes, businesses, schools, and hospitals across our region. That means treating water from the Waikato River and our local water sources, storing it safely, and moving it through pipes to your tap.
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Stormwater
On behalf of our shareholding councils, we manage the rainwater that drains off roads and properties, preventing flooding and protecting our rivers and streams from pollution.
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Wastewater
We safely collect and treat wastewater from homes and communities. That includes maintaining the pipes beneath streets and buildings, operating treatment plants, and protecting both public health and the health of our waterways.