This study examined water use in a group of single family homes built after Jan 1, 2001, that were chosen at random from 8 water agencies in the U.S. The report provides detailed analyses of end uses by household and examines the factors that affect indoor and outdoor water use.  In addition a sample of new homes built specifically for high water use efficiency (to the WaterSense new home specification) was also studied and indoor water use was compared to the water use for the standard new homes and...

How much water can be saved through retrofits of high-efficiency fixtures and appliances?  This study presents pre- and post-retrofit water use measurements and assess the impact of a wide range of water efficiency measures.