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.
Consolidated determination
We have published a consolidated version of the Water Services Information Disclosure Determination, which incorporates all amendments made to date into a single document. This consolidated version is provided for convenience and ease of reference only and does not alter the effect of the original determination or any subsequent amendments.
Compliance calendar
See the Compliance Calendar linked below for more information on disclosure requirements and key dates.
Regulatory framework paper
Our regulatory framework paper explains our approach to setting and amending ID requirements in respect of water services that are subject to ID regulation.
Progress to date
Consumer protection related ID discussion paper
We are seeking feedback on our discussion paper on consumer protection related ID for water services.
The discussion paper explores whether the information currently available provides sufficient visibility of consumer experience and protection issues, or whether additional visibility through information disclosure would improve understanding.
Submissions on our discussion paper are due 26 November 2026. Please email wai@comcom.govt.nz with ‘Submission: Information Disclosure for Water Services – Consumer Protection Discussion paper’ in the subject line.
How to disclose information
If you are providing information disclosures to the Commission via email, please send these to infrastructure.regulation@comcom.govt.nz.
Read technical frequently asked questions in relation to information disclosure requirements.
Please send any queries or concerns relating to our templates to infrastructure.regulation@comcom.govt.nz.