New South Wales Consolidated RegulationsThe holder of a licence that authorises the operation of a milk tanker or vessel that is used for the bulk transport of milk must ensure that the tanker or vessel is not used for any purpose except:
(a) the collection of milk from dairy farms, or
(b) the transportation of milk or cream, or
(c) the transportation of clean water or food-grade liquids that will not contaminate or affect the quality of milk or cream or leave residual odours.