Plumbers technical note – Water efficiency labelling and standards

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All documents issued prior to 1 July 2017 were issued by the former Department of Commerce. Documents listed here are the latest versions available. For more information on this document, please contact

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This technical note has been published to provide information on the objectives and requirements of the Water Efficiency Labelling and Standards (WELS) scheme.

Building Commission
Technical standards
Last updated 25 Oct 2016

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