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Asia Pacific design, engineering and advisory company Aurecon, in partnership with KPMG, is pleased to announce Hamilton City and Waikato District Councils have received formal government approval for a joint Water Services Delivery Plan (WSDP). They are the first councils in New Zealand to receive this approval.
This landmark achievement establishes the country's first joint council-controlled organisation (CCO) for water services, named IAWAI – Flowing Waters, which will serve 280,000 people across the Waikato region.

The WSDP includes a ten-year $3.6 billion investment plan into shared water services, with 67% of this investment driven by growth requirements. It features a comprehensive transition strategy for the CCO and a financial sustainability framework addressing affordability for ratepayers.
The plan enables both authorities to access enhanced borrowing capacity and sets IAWAI – Flowing Waters up to begin operation from July 2026, managing wastewater plant upgrades and long-term growth strategies.
“Aurecon is privileged to have supported this transformation through our partnership with KPMG,” says Dr Deborah Lind, Aurecon Water Industry Lead. “We would like to acknowledge the exceptional leaders from both councils for contributing to the success of the WSDP.”
Waikato District Council Three Waters Manager, Keith Martin says, “This represents a genuine step forward for collaborative local government in New Zealand. Our joint working group was determined to show that councils can work together effectively on complex infrastructure challenges.”
With $120+ billion investment needed for New Zealand's ageing water infrastructure over the next 30 years, collaborative models provide the pathway to achieve essential upgrades while keeping costs manageable. Just days after Hamilton City Council and Waikato District Council received approval, Whangārei District Council voted unanimously to establish a Northland-wide CCO, bringing together three councils to serve 100,000+ consumers.
“These councils are proving that working together creates value for everyone – better services, more affordable costs, and stronger communities,” says Aurecon’s Deborah Lind.
“The councils' leadership and commitment to collaboration has set a new standard for water services delivery in New Zealand.”

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