In fact, there are many kinds of water we drink in our daily life. For example, the well-known boiled water actually includes tap water, purified water and mineral water. These three kinds of water contain different trace elements and nutrients, so although they can all be called boiled water in our daily life, the nutritional value of boiled water made in different regions is also very different. Generally speaking, tap water is a very common kind of water in daily life. Relatively speaking, pure water and tap water may be cleaner and filtered more carefully. Tap water refers to domestic water, such as groundwater or surface water, which is provided for people's daily life after certain treatment. Mineral water generally contains certain mineral trace elements and carbon dioxide gas. In general, mineral water is more expensive, because after pretreatment and filtration, mineral water retains beneficial minerals in water and removes bacteria and toxic substances, so minerals may be healthier for human body and can provide some nutrition. Pure water is a kind of special secondary filtered water formed by more careful filtration. The water quality is very pure. Purified water is purified by multiple processes, and bacteria are removed, so it can be directly drunk. But for the human body, some minerals may make the elements less, because these minerals and substances beneficial to the body are filtered out by special filtration. Under normal circumstances, the choice of these three kinds of water, if the family conditions are general, it is best to choose pure water. If the family is average, because mineral water contains some minerals that can make up for some elements of the body, pure water will taste relatively clean and soft. Tap water is generally a kind of water that is widely used in life.