To most people in the U.S., water is simply assumed. Without much thought, they turn on the shower, brush their teeth, make coffee or tea, flush the toilet, and grab a full, cold plastic bottle of name-brand water. Taking a bite of food or slipping on a cotton T-shirt does not inspire thoughts of water, its role in agriculture, or challenges to managing the nation’s water supply. But water is the lifeblood of agriculture, and plays an ever-increasing role in food availability, cost, food security, and national security… and competition for it is increasing as supplies decrease.