When choosing and using drinking water, we should pay attention to the following aspects:
1. Check whether the cover of the water tank is sealed. The lid of the bucket is not sealed, so the water is easily contaminated by bacteria. Especially in summer, the lid of the bucket is easy to loosen. You can try turning the lid by hand to see if it can turn. Or put the bucket down for a period of time and observe whether there is water oozing from the mouth of the bucket. If there is water oozing, the lid is not sealed properly.
2. Carefully observe whether the water quality in the bucket is clear and whether there is suspended matter. If there is suspended matter, foreign matter or turbidity in the water in the bucket, it means that the water quality is polluted and can't be drunk.
3. Try to choose new bottled water. The inner wall of the old barrel will be uneven if it is used for a long time. Especially the barrel for storing mineral water, the inner wall is prone to mineral precipitation, which is not easy to clean and will breed bacteria. Observe the barrel wall, and no green algae can appear. The discovery of green algae means that the water has been polluted by microorganisms and can no longer be drunk.
4. Take a sip of water. Normal water should have the normal taste of all kinds of water, and sometimes it will have a slight ozone smell, which is normal. If there is any other peculiar smell or plastic smell, you can't drink any more.
5. Pay attention to the production date of the product and try to drink the products produced recently. Once the bucket is opened for drinking, it should be finished as soon as possible. Generally, the drinking period of bottled water on the water dispenser should not exceed one week, otherwise the water quality will be easily polluted by bacteria in the air.
6. The drinking fountain should be placed in a clean and ventilated environment. Clean and disinfect regularly with disinfectant to ensure the hygiene of drinking fountains. Mineral water and mountain spring water should be kept in a cool and dark place to avoid sunlight. Because under the action of sunlight, algae will multiply rapidly, leading to the emergence of green algae.