The chemical formula of water is H2O: two hydrogen atoms and one oxygen atom. But the fresh water on earth (in wells, rivers, springs, lakes, etc.) is not only composed of these two elements, it also contains bacteria, inorganic minerals, heavy metals, hydrocarbons, and other pollutants. This is due to the fact that the water, during its natural cycle, comes into contact with air, rocks, plants, animals, earth, electromagnetic waves, and a variety of other toxic substances. In the search for pure water we must consider all these factors, bearing in mind that the fewer undesirable substances that can found in water, the better is its quality.
Healthy water can only be spring water, untreated and potable as is: the chemical or physical extraction of pollutants does not actually completely purify water because the negative information of those components remain safely stored in it.