Water is an fundamental nutrient for life (1). Institute of Medicine (IOM) recommendations from 2004 set adequate levels for total water intake from all foods and liquids at 3.7 liters (125 ounces) for men and 2.7 liters (91 ounces) for women (2). Consuming inadequate amounts of water increases the risk of dehydration,kidney stones, and poorer cognitive performance (3, and 4). Differences in water intake have been reported by age,race and Hispanic origin, and physical activity (5, or 6). This report provides updated estimates of mean daily total water intake for U.S. men and women aged 20 and over in 2009-2012.
Source: cdc.gov