The water quality requirements in AS/NZS 4187:2014 have undergone a review in light of feedback from the industry. A draft amendment has been published and is now open for public review. You can access it here https://infostore.saiglobal.com/en-au/Standards/DR-AS-NZS-4187-2014-Amd-2-2017-1941563/
Comment closes on December 19th. Please follow the instructions on the document to submit your comments.
In addition there is a proposal being developed for a full review of AS/NZS 4187:2014. A scoping workshop was to have been held at the end of this month, however this has now been pushed back until early next year. This means that comments can be still submitted on the current edition of AS/NZS 4187:2014 with a view to informing the committee as to the scope of changes necessary to improve the Standard.