1. mineral water. High-quality and authentic mineral water contains minerals suitable for human body, which has certain health care function, but its cost is high and it is not suitable for long-term drinking.
2. Pure water. That is, distilled water and space water, all harmful substances and elements have been removed, which is suitable for making tea. Simple long-term drinking is potentially harmful, especially to the elderly and children.
3. Bottled water. Uneven quality, easy to secondary pollution, choose carefully.
4. Filter tap water. That is, the standard tap water treated by the waterworks, but it reaches the faucet through the water pipe network and water tank, and there are some impurities and bacteria. It is recommended to drink it after boiling. This kind of water is convenient and economical.
5. Tap water filtered by water purifier or water purifier. This water is the healthiest and safest, but it needs to be equipped with a qualified water purifier. Pay attention to the following points when drinking water, don't wait until you are thirsty, don't drink expired water, don't drink hot water in winter, and drink water without ice in summer.
6. Boiled water. Boiled water is the best drink. Although there are some harmful substances in it, it will be gone when it is boiled, and boiled water is affordable for everyone.