自然界水体中虽然含有极少量对人体有益的微量元素，同时也含有大量的可溶解性离子（包括对人体有害的重金属离子）、不溶性杂质、微生物，乃至各种污染物。例如，有一水体，碘的含量达到了每升0.5毫克，与此同时，其离子总量达到了每升2000毫克。那么，为了获得少量的微量元素而喝入大量无用的，甚至于有害的物质是一个值得斟酌的问题。 Although in nature water contain a small amount of trace elements beneficial to human body, but also contains a large number of soluble ion (including the harmful heavy metal ions), insoluble impurities, microbes, and all kinds of pollutants. For example, a water body, the content of iodine reached 0.5 mg per liter, at the same time, the total ion content reached 2000 mg per litre. So, in order to get a small amount of trace elements and drink a lot of useless and even harmful substance is a question worth considering. 　　 自然界水中含有的矿物质多为无机矿物质，人所能吸收的矿物质必须是经过转换的有机化合物质，才能被人或动物吸收利用。例如，体内缺少钙，饮用再多的高硬度的水都无济于事，只能从食物或钙片中提取活性钙来补充体内需要的钙。若饮矿物质含量高的水，必然摄入大量不被吸收的无机矿物质，这些无机矿物质将沉积在体内，或通过肝脏、肾脏等排出体外，从而使人体内各器官承受额外的负担。 Natural water contains minerals are inorganic minerals, people can absorb minerals must be transformed organic compounds, can be absorbed by people or animals. For example, the lack of calcium in the body, drink more water with high hardness to no avail, can only extract active calcium from food or calcium to supplement the needs of calcium in the body. If the drinking water of high mineral content, must intake cannot be absorbed inorganic minerals, these inorganic minerals will be deposited in the body, or through the liver and kidney eduction body outside, so that the different organs in the human body to bear the extra burden. 　　 水在人体中的主要功能是参与新陈代谢，即输送养份，排出废物。形象讲，水是体内的“搬运工”和“清洁工”。纯净没有任何杂质，是一种不饱和的“饥饿水”，它可将养份快速的送到体内各器官，又可迅速将体内有毒、有害物质带出体外，其代谢速度远大于自来水。显而易见，加快代谢，可促进健康。 Water in the main function is to participate in the body metabolism, transport nutrients, discharge waste. Image, the water is "a porter" and "cleaner" in the body. Pure without any impurities, is a kind of unsaturated water "hunger", it can also quickly to the different organs in the body, and can rapidly the poisonous and harmful substances in the body out of the body, its metabolic rate than tap water. Obviously, to speed up the metabolism, can promote health. 　　有人认为纯净水溶解力强，会将体内的营养物溶解排出体外，使人虚脱。 让我们做一个简单的实验，在手上打上肥皂，然后用自来水冲，一冲即掉，纯净水来冲手上总有一种滑腻的感觉。这表明对于某些物质来说，自来水的溶解力比纯净水还要强。 Some people think that pure water dissolving power, will be dissolved nutrients in the body out of the body, make the person collapse. Let's do a simple experiment, soap in the hand, and then with water, a rushed out, there is always a kind of pure water to flush hands soapy feel. This shows that for some material, water dissolving force stronger than pure water. 总体来说，纯净水是一种非常安全饮用的水。 Overall, the pure water is a kind of very safe drinking water.