The recommended daily amount of water intake for an average adult varies but generally ranges between 2.7 to 3.7 liters (about 91 to 125 ounces), including all beverages and food sources. This recommendation may differ based on factors like age, sex, physical activity level, and climate. Staying hydrated is crucial for maintaining body function, supporting digestion, and regulating body temperature. Listening to your body's signals for thirst and monitoring hydration status (especially during exercise or hot weather) can help ensure adequate fluid intake.