Water – Wai
The Commerce Commission regulates water supply and wastewater services, which are critical to the health and wellbeing of New Zealanders. We work to incentivise providers of these services to deliver for the long-term interest of consumers.
What’s happening? | He aha te mea e puta ana?
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Our role
We are currently establishing a new economic regulation regime for water services. Some requirements already apply, while others are being developed and will apply in the next few years.Read more -
Information Disclosure
We will use information disclosure as a tool to regulate suppliers that provide water supply and/or wastewater services.Read more -
Foundational Information Disclosure for Wellington Water
On 15 May 2025 Wellington Water Limited became a specified entity subject to foundational information disclosure.Read more -
Crown monitor for Watercare
We monitor and report on Watercare’s performance as Auckland’s water and wastewater provider.Read more -
Price-quality path for Watercare
Watercare will be subject to a price-quality path once the Charter ends in June 2028.Read more -
Information Disclosure – technical frequently asked questions
This page includes technical frequently asked questions to support regulated suppliers with their disclosure requirements.Read more
If you have any questions regarding our role or the tools available to us, you can contact us by emailing wai@comcom.govt.nz.