clear water prevention

all nature is full of water, but not all water is potable (fit for consumption). Only 0. 3% of the total water available to humans is considered to be “drinking water”. For a water to be drinking, there must be a certain amount of substances that can safely consume each day without risk of health [...]

from all waters in the world, only 3% are fresh (water with less than 0. 5 parts per thousand dissolved salts). Less than one third of one percent is available for human use. The rest is frozen in glaciers or polar ice caps, or even in the depths of the earth where we can not [...]