The recommended daily water intake for an average adult is about 2.7 liters (91 ounces) for women and 3.7 liters (125 ounces) for men, according to the U.S. National Academies of Sciences. This includes all fluids consumed from beverages and food. Proper hydration is essential for maintaining bodily functions, including temperature regulation, nutrient transport, and joint lubrication. Individual needs may vary based on factors such as physical activity, climate, and overall health. It's crucial to listen to your body’s signals and drink water accordingly for optimal wellness.