Distilled water is water that is distilled and condensed. The water that is steamed twice is called re-steamed water, and the water that is steamed three times is called triple steamed water. Water with low oxygen consumption is obtained by adding potassium permanganate and acid industrial distilled water. It is not good to drink distilled water at ordinary times for the following reasons:

① Distilled water is pure water in theory, and it does not contain minerals (inorganic salts) and other nutrients needed by human body. Drinking distilled water can only supplement the body's need for water, but not the other major elements and trace elements.

② Some chemical experiments in the laboratory need distilled water, which has no electrolyte, free ions or impurities. Therefore, distilled water is an experimental product and is not suitable for people to drink.

Therefore, to sum up, distilled water is pure water, and it is not good to drink distilled water at ordinary times. Daily water should be produced from natural water sources such as mineral water, and the effect will be better.