In our water environment, undoubtedly pure water. Minerals and so on, can be obtained from the rich food to replenish, the water rather less important. I think drinking water or buy the kind of water purifier with adsorption method, with ordinary water dispenser use, depending on the quality of water to determine the frequency of replacement cartridge. Boiled water = boiled tap water: our tap water quality is not good, even if the factory qualified, poor quality pipeline also cause heavy metal pollution, unhealthy; not to mention that now tap water treatment also apply chemical flocculants, and residual chlorine is too high. Pure water = reverse osmosis and other processing of water: very few impurities, lack of natural minerals needed by the human body. Mineral water = pure water + magnesium sulfate, potassium chloride: just add magnesium salt and potassium salt to improve the taste, other minerals, or no, and magnesium and calcium will have a certain replacement, perhaps long-term drinking will not be conducive to dental health. Certain mineral water = deep lake water: China, in addition to the Tibetan plateau, there is almost no unpolluted lake, such as Nongfushanquan water Qiandao Lake, surrounded by cities and industrial zones, even if the deep water, but also by the groundwater and contaminated substances on the upper layers of contamination, especially the ratio of significant pollutants, basically deposited into the deep layers to go. Sales so much each year, if you really take water from the deep lake, the original small pollution of the water has also long been taken out, and now is supplemented by the upper layers and groundwater, how the surface pollution, how dirty it is. Certain mineral water = glacier water: not to mention the glacier exposure to dust in how many years, the deposition process adhered to how much volcanic ash and other substances, the last hundred years of atmospheric pollution spread directly into space, the area of a few kilometers high glaciers count what? Plastic products everywhere, not bad bottled water this pollution, comprehensive consideration, drink finished water, or pure water is more reliable.