This part of ISO 5667 establishes principles to be applied to the techniques of sampling water intended for human consumption.For the purposes of this part of ISO 5667, water intended for human consumption comprises:a) all water either in its original state or after treatment, intended for drinking, cooking, food preparation, or other domestic purposes, regardless of its origin, plusb) all water used in any production undertaking for the manufacture, processing, preservation or marketing of products or substances intended for human consumption unless the competent national authorities are satisfied that the quality of the water cannot affect the wholesomene