Quality is very good, some barrels of water said to be natural mineral water, but the investigation found that the water around all the garbage. Some say it is mineral water, but found that it is actually tap water and so on. The water source of the barrel water questioned constantly, it is difficult to guarantee the quality of water.
Drinking fountains, if not regularly disinfected, there will be bacteria, virus breeding.
When we change the barrel of water on weekdays, we can see that there are bubbles gurgling up, when most of the bacteria in the air dissolved into the water, and rapidly multiply in the water. Opened three days, do not drink in time to finish, the bacteria exceeded the standard 227 times, more than the tap water bacteria.