There are few things we take for granted as much as our ability to turn on the tap and get water in a seemingly endless supply. Even during droughts, and despite warnings about shortages and conservation, most of us treat this precious resource as a given. The average American uses 80-100 gallons of water per day, and while less than half of that will be used for cooking or drinking, chances are that all of it is treated, potable water from the municipal provider. High demand strains supplies and under extreme conditions necessitates water rationing. Water efficiency means doing more with less water; for example, washing dishes or flushing the toilet with the least amount of water necessary. Green building encourages innovative water-efficiency strategies that help projects use water wisely. Project teams can follow and integrated process to begin assessing existing water resources, opportunities for reducing water demand, and alternative water supplies.