To select and use drinking water, you should pay attention to the following aspects:
1. Check whether the lid of the vat of water is sealed. If the lid is not sealed, the water will be easily contaminated by bacteria. Especially in the summer, the lid is easy to loosen. You can try to rotate the lid by hand to see if the lid can be turned. Or put the bucket upside down for a while, to observe the bucket mouth whether there is water seepage. If water seeps out, it means the lid is not sealed.
2. Carefully observe whether the water in the barrel is clear and whether there is suspended matter. If you find that the water in the barrel has suspended particles, foreign objects or turbidity, it means that the water is contaminated and not drinkable.
3. Try to pick a new barrel of water, the old barrel used for a long time, the inner wall will not be smooth, especially the storage of mineral water barrel, the inner wall is prone to mineral precipitation, not easy to clean, will breed bacteria. Observe the barrel wall, there can not be green algae. Found green algae, indicating that the water has been contaminated by microorganisms, can no longer drink.
4. Taste a mouthful of water. Normal water should have the normal taste of each type of water, sometimes there will be a slight ozone flavor, which is normal. If there is any other odor or plastic flavor, you can no longer drink.
5. Pay attention to the production date of the product, as far as possible to drink recently produced products. Once the barrel is opened for drinking, it should be consumed as soon as possible. Generally in the drinking fountain on the barrel water, drinking period should not be more than a week, otherwise, the water quality is susceptible to airborne bacterial contamination.
6. Drinking fountains should be placed in a clean, ventilated environment. Regular cleaning and disinfection with disinfectant solution to ensure that the drinking fountain hygiene. Mineral water and spring water should be kept in a cool, sheltered place to avoid sunlight. Because under the action of sunlight, algae will rapidly multiply, leading to the emergence of green algae.