Water
is a substance (of molecular formula H2O) found at room temperature and pressure a clear liquid, it is present
naturally as rain, and found in rivers, lakes, and seas, its solid forms is ice and its gaseous form is steam.
Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as
drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity
level, age, health-related issues, and environmental conditions. "