3. Sometimes the tap water has a bleaching powder smell. Why?
This is the odor of residual chlorine after the disinfection process. Actually, the odor of residual chlorine will vanish after it has dissolved in water for about half an hour. In order to ensure that the water in all sections of the network mains meets the European Union standard, and to handicap condition of bacterial reproduction in treated water, , we may adjust the dosage of chlorine. This will sometimes result in a relatively strong odor of chlorine, but this is essential to making water drinkable.