In the best case, not necessary substances in the water, getting into the human body, are deposited, on the level of how cells, tissues and whole organs. These substances violate metabolism in the body, thereby violating the vital activity of single cells and tissue, so the organism as a whole.
An example of such deposits, in the human body, can serve, stones and sand, which are deposited in the kidneys and other human organs.
In more serious cases, when the water is contaminated with toxic substances, they, once in the human body, affect particular organs and tissue, and cause a reduction in overall toning, immunity, and other functions of a human body.
In the most complex cases polluted water can cause toxic poisoning, and with regular use, a variety of diseases, including cancer. In addition, some of the toxic substances can affect the human heredity.
That long to explain, it would be enough to say that the human body in seventy per cent of the water. And if it is dirty water, and the body will ache and not work as you need to.
Therefore, it is very important to try and clean drinking water, or to store clean water, in order to protect their own health and well-being.
Wish you all the best and good health.