If you think about what you really need, to survive, it is water. Typically you are unable to survive more than 3 days without fresh water.
Around 60% to 65% of the human adult body is water, although there can be considerable variation in body water percentage based on a number of factors like age, health, weight and gender. Even your bones are watery…around 31%.
Our water analysis
Mineral analysis typical values Mg/l