1 Factory water balance In the sugar process, water requirements are the followings: imbibition, process water use, lime make up water, flocculants make up water, filter wash, pan house requirements and service water requirements. The use of external supplies should be kept to a minimum, because they inflate the quantity to be disposed of ultimately. It is possible for a mill to exist without an external supply, providing water circuits in the mill carefully managed. A scheme showing the water flows in a sugar process production appear in Figure 1