Water use is the volume of fresh water used by individuals and businesses. This includes both water consumed and water polluted in the process of meeting the needs and demand for producing goods and services for individuals and communities globally. Related to water use is the concept of water footprint,(1) developed to enhance the understanding of how our production and consumption choices affect the use of global water sources. The concept of virtual water(2) highlights the hidden flows of water that occur when products are traded internationally.(1-3)