Information Disclosure
We use information disclosure as a tool to regulate suppliers that provide water supply and/or wastewater services.
Our role
One of the key tools we use for economic regulation for the water sector is information disclosure (or ID) – a form of economic regulation that promotes transparency by requiring regulated suppliers to publicly disclose certain information about their performance.
We take that information, analyse it, and publish it in a manner that makes it easier to compare between regulated suppliers, and look at trends over time.
By shining a light on what’s going well and identifying and monitoring areas for improvement, we can encourage your local water service provider to improve efficiency and quality and incentivise it to innovate and invest for the long-term benefit of consumers.
Progress to date
Final determination
On 24 February 2026, we published our final decision package on information disclosure for water service providers. We expect regulated suppliers to fully comply with our ID requirements from the start dates. See our package of documents below.
If you are providing information disclosures to the Commission via email, please send these to infrastructure@comcom.govt.nz.
Read technical frequently asked questions in relation to information disclosure requirements.
Consultation that supported our final determination
On 12 February 2025, we published our information disclosure discussion paper as a first step in engaging with water sector stakeholders to understand their views on how we could develop a new performance reporting regime for water service providers. We published the responses we received and a paper that summaries the key themes and issues raised.
On 11 September 2025, we then published our draft decision on our information disclosure requirements for consultation. The consultation covered our proposed requirements, and the reason we proposed them. Consultation closed 20 October 2025 and we published the responses we received.