WHAT IS WATER

Water is the source of all life on earth.
The amount of water there is on earth today is the same amount as always. It's the same water we drink today as the dinosaurs ware drinking millions of years ago. There is no new water created, but there is no water disappearing either.
In our part of the world we are spoiled with a good supply of clean and fresh water
In other parts of the world the supply of water is not that good. Water is necessary to survive. A human could stay alive for several days or weeks without food to eat but without water she would die in just a day or two.
The human body looses somewhere between 2,5 and 3,5 litre of water throughout the twenty-four hours. The water disappears through the skin, exhalation and urine. A grown up human need to compensate the loss by intake of at least three litres of water in some form every day.

All water contents natural minerals, microorganisms and chemicals of different sorts and in various amount depending on the source. There is established limit values on how much of every substance the water could contain to be used as drinking water.
The following substances you can find in common water:

Fluor
Iron
Silicon
Chrome
Sulphur

Phosphorus
Calcium
Chlorine
Magnesium
Zinc

Iodine
Potassium
Copper
Sodium