The mission of the WaterMAPS™ team is to provide technical assistance to water suppliers in support of urban water demand management, conservation programming, and planning and policy decisions. WaterMAPS™ was developed as an analytic and public information tool to help municipalities, water districts, and managers of pressurized secondary irrigation systems better understand patterns of landscape water use. Water applied to landscapes constitutes approximately 65-75% of urban residential water demand in the United States West. Urban landscapes contribute to the health of urban environments and their residents, yet they are often watered in excess of the actual water needs of the vegetation. Increasing landscape water use efficiency offers one of the greatest opportunities for reducing urban water demand in order to manage scarce water supplies in the context of aridity, drought and climate variability.