Drinking water - Wikipedia
The amount of drinking water required per day is variable. It depends on physical activity, age, health, and environmental conditions. In the United States, the reference daily intake (RDI) for total water is 3.7 litres (130 imp fl oz; 130 US fl oz) per day for human males older than 18, and 2.7 litres (0.59 imp gal; 0.71 US gal) per day for human females older than 18 which includes drinking ...
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