Compared with tap water, bottled water is clean and safe, and bottled water is fashionable and convenient, so it becomes the first choice of many families and offices. Many people think that bottled water is clean and sanitary, in fact, it is not! So do you know how long the shelf life of bottled water is generally? What is the harm of drinking bottled water for a long time?
The survey found that one of the biggest problems of ordinary people in the process of drinking bottled water is that they think that drinking a bucket of water for a long time is not harmful to their health. In fact, according to the relevant research results, there is a shelf life when bottled water is used on the machine - the shelf life can not exceed 20 days at most.
According to the current investigation, there are generally two microbial indicators to measure drinking water, one is the total number of colonies and the other is the total coliform bacteria. Generally speaking, most of the coliform bacteria are qualified. The main problem is that the total number of colonies exceeds the standard, and the exceeding standard of the total number of colonies will be more serious as you use it for a long time. At present, there are so many people using bottled water, the problem that should be paid attention to is the service cycle of bottled water, the shorter the cycle, the better.
Due to the structural defects of the water dispenser, once the water tank is opened, the water will contact with the air. Most of the water dispensers have no disinfection and filtration device. Some air microbes and dust will enter into the water tank from the air inlet, which will cause the pollution of the water dispenser. If the bottled water in Kaifeng is kept for more than half a month, although there is no change in the taste, the bacteria have exceeded the standard. So we should not drink bottled water for too long. If you haven't finished drinking for more than 20 days, don't drink the rest of the water. Do other treatment and don't waste it.
What's the harm of drinking bottled water for a long time
Hazard of bottled water I: poor quality barrels may contain carcinogens
The mineral water uses PC bucket (good bucket: relatively speaking, but it will produce more and more chemicals after a long time: bisphenol A). This bucket has good transparency and high rigidity, so the wall of the bucket is not very thick, and it is colorless and transparent. In 2004, TPE bucket (General bottled water is disposable, anti reuse is toxic, and it is forbidden to be used in many places). In 2004, the state banned pet bucket recycling for bucket Package with water. Although it is now required to carry out QS certification for buckets, the buckets sent for inspection by some enterprises are qualified, and the ones actually used may not be qualified.
Harm of bottled water II: bacteria grow in over time service buckets, and secondary pollution of bottled water is inevitable
Many urban residents use barreled pure water in their homes, and it has become the main way of drinking water for their families. The relevant departments have tested the bottled water in Kaifeng for two weeks, and the results show that the total number of bacteria in the bottled water exceeds 12.5 times the upper limit of the factory standard. There are so many hidden dangers in a bucket of seemingly clean water. Experts exclaim: the second pollution of bottled drinking water is shocking.
The secondary pollution of bottled water is inevitable. No exception for water delivery is the use of bicycles and tricycles. Due to the influence of time, climate, environment and personnel quality, there is a great possibility of "secondary pollution" in the whole water delivery process. At the same time, the bacteria and dust in the air will inevitably enter the water dispenser and bucket. The large-scale survival and reproduction of bacteria is extremely harmful to people's health. There is also a common problem of "thousand boiling water" in bottled water. When the bottled water is repeatedly heated in the water dispenser, it will form a "thousand boiling water". It seems clean, but it is actually a concentrated solution of harmful substances such as heavy metals and arsenide.
Harm of bottled water three: over time service, the bucket becomes a paradise for bacteria growth
According to the regulations, each bucket will be scrapped after 100 times of repeated use. Experts say scrap barrels are often a 'paradise' for bacteria to grow. Some small and medium-sized bottled water manufacturers do not carefully disinfect the recycled empty buckets, but simply wash them in the tap water for use, resulting in a large number of bacteria in the buckets. With this kind of bottled water, no matter how good the water is, it must be polluted. The "black barrel" has not completely withdrawn from the market, and the excessive service of the water barrel is serious. The waste barrels that should be eliminated are still in large use, which causes great pollution to the bottled water.
Harm of bottled water four: black heart water, black heart barrel, harmful to health and toxic
"Blackheart water" refers to the bottled water directly filled by illegal traders with tap water, and the polymer in the industrial waste of "blackheart barrel" will seep out in the water environment, which is an organic pollutant, easy to cause human cancer. People who drink the water in the "black heart barrel" will not feel it immediately, but like chronic poisoning, the harm will show up after many years.