The water footprint of an individual consumer refers to the sum of direct and indirect freshwater use by the consumer. The direct water use is the water used at home. The indirect water use relates to the total volume of freshwater that is used to produce the goods and services consumed by the consumer. A water footprint is generally expressed in terms of the volume of water use per year. So, the indirect water mentioned here known as virtual water which the water used cannot be seen directly. The water used normally is embedded in food we take or clothes we wear.