Pure water is pure and clean water, and does not contain any impurities or bacteria, such as organic pollutants, inorganic salts, any additives and various impurities. Take the water that meets the sanitary standard of drinking water as raw water. Purified water is disinfected regularly by instruments to eliminate harmful substances. Therefore, drinking directly will not affect the health, but it can also be boiled before drinking, which can further kill some microorganisms and be beneficial to human health.