Suitable if you have no choice. First, the view that the distilled drinking water - the pure, not always justified. Distilled drinking water is obtained by distillation, therefore, may contain volatile organic impurities. Secondly, the mineral composition of distilled water (or more accurately - lack thereof) does not correspond to natural (especially distressing lack of potassium ions). Established that the low level of mineralization of distillate has poor organoleptic properties and has adverse effects on water-salt metabolism and functional status of pituitary-adrenal system, regulating the basic metabolic processes in organizme.Malomineralizovannye waters are not only low taste, but not quench thirst, not full enough for the salt composition. There has also been a number of changes in the electrolyte metabolism - increasing the concentration of chloride, potassium and sodium in the blood and increased excretion of mochoy.V regard to drinking water is scientifically substantiated the need to incorporate an additional criterion - the physiological usefulness. This criterion includes not only standardization of maximum permissible concentration (MPC) for chemicals and elements, but also necessary, optimal levels of total salt and water content in it of some biological macro-and micronutrients. Can I drink the rainwater? Atmosphere of the earth is polluted, no less than the rest, so condensation of raindrops in the water dissolves all that "flies" in the air. Thus obtained acidic and radioactive rain. Boil and drink? Prolonged continuous use of boiled water leads to a decrease in immunity. Boiling kills microorganisms, but the salts of heavy metals remain in the water. Useful same substance - calcium and magnesium salts are destroyed by boiling and in the form of scale deposited on the walls of the cookware. Boiled water is already a day is harmful to health. Boiling violated the so-called "immunity" and the storage of water like a sponge, it absorbs from the air all microorganisms, bacteria, viruses. Desirable to drink boiled water only after boiling in a tea or coffee. More useful for the organism to drink unboiled water. The main thing that it was of good quality.