Drinking Water Rules

Drinking Water Rules

    To help our members and the wider sector understand and work within the new rules, Water New Zealand has run a series of webinars on the new rules and other key topics. View past recordings or upcoming webinars here.   

    New Drinking Water Standards

    Drinking Water Standards (Standards) set the Maximum Acceptable Values (MAVs) for a range of contaminants which can affect the safety and quality of drinking water. They are based on guideline values set by the World Health Organisation.

    The new Drinking Water Standards were set by the Minister of Local Government on 9 June 2022 and will come into effect on 14 November 2022.

    Taumata Arowa has issued updated aesthetic values for drinking water. These Aesthetic Values replace the guideline values for aesthetic determinands specified in the Drinking-water Standards for New Zealand 2005 (Revised 2018).

    If you are a private supplier you will need to register by 15 November 2025 and be compliant by 15 November 2028. 

    View Draft Drinking Water Quality Assurance Rules  

    Municipal Suppliers

    Registered suppliers can notify Taumata Arowai by using a form that is available on their website. If there’s an immediate risk to public health, call 24/7 on 04 889 8350. 

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    Small Suppliers

    There are various solutions for small suppliers as laid out by Taumata Arowai.

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