The world is on the verge of a water crisis. Rainfall shifts caused by climate change plus the escalating water demands of a growing world population threaten society’s ability to meet its mounting needs. By 2025, the United Nations predicts 2.4 billion people will live in regions of intense water scarcity, which may force as many as 700 million people from their homes in search of water by 2030, reports Thomas Sumner. (1) Population growth is one factor requiring drinking water and sanitation, but there is also the need to produce more food. Agriculture accounts for 70% of water use. (2)