From July 2026, we're looking after the water services that support daily life across Hamilton City and Waikato District.
We’re here to care for wai as taonga, keeping drinking water, wastewater and stormwater services safe, reliable and future-ready.
IAWAI brings Hamilton City and Waikato District Councils together as a single regional water provider.
Working in partnership with Waikato-Tainui and guided by Te Ture Whaimana, we bring people, knowledge and investment together so we can plan our infrastructure needs, spend wisely, and support the needs of our growing communities.
Partnership with:
See the progress we’ve been making with recent projects across Hamilton and the Waikato.
The preferred location, consenting approach and treatment standards for a new wastewater treatment plant have been confirmed, marking a major step forward for the project.
A multi-year programme to improve water efficiency and drive financial savings through residential water metering was confirmed for Hamilton this morning.
The first structural changes to how long-term water and wastewater costs are managed in Hamilton and Waikato District were locked in this morning (Thursday 18 June 2026).
Decisions which will shape the future of its region's water services are on the agenda for the IAWAI Board this Thursday.
IAWAI has been created to bring drinking water and wastewater services together under a single regional provider. This allows water services to be planned, funded and delivered more efficiently, while meeting higher standards and supporting growth across the region.
No. IAWAI is publicly owned by Hamilton City and Waikato District Councils. Water remains publicly owned, and by law it cannot be run for profit.
IAWAI officially launches in July 2026.
No. Your water will continue to flow as it does now. The same teams, infrastructure and standards remain in place.
No action is required, just get to know us! This is a planned transition, not a sudden change.
For now, you’ll continue to contact your council as usual. Over time, customer services will transition to IAWAI; we’ll keep you in the loop about these changes when they happen.
