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.
As the first rates notices including an IAWAI water services charge roll out this week, residents and businesses are being assured the water component is a split of the previous total charge, not an additional or a replicated cost.
The evacuation of around a dozen Tuakau properties during a significant emergency services response last night highlights the dangers of allowing prohibited substances in to the wastewater network.
Policies for today and infrastructure for tomorrow are the major topics of the first board meeting for IAWAI as an operational entity.
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.
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 all water-related issues contact us on 0800 WATERS (0800 928 377) or email us: info@iawai.co.nz
You can also report issues through the Antenno app.
