This analysis of county-level, public-supply water use in six Midwestern states provides useful insights into the relationship between water use and those factors that are most likely to predict or explain water use. It also provides a perspective on the challenges that face water system managers and regional officials in planning to meet future water system infrastructure needs in the region. This summary reviews the water use projections and related findings of the study, and makes several recommendations for actions that may improve water use forecasting and infrastructure planning for drinking water systems.