Utah State University Extension
In Utah, nearly two-thirds of the water consumed by residential homeowners is used to maintain landscapes. Recent water checks conducted by Utah State University Extension found that a typical homeowner applies 80 inches of water each growing season. This is twice as much as is needed.
McCammon, Todd A., "Home Water Self-check: Do-It-Yourself Water Check for the Home Landscape" (2003). All Current Publications. Paper 914.