How hygienic is the tap?
The tap will come in repeated contact with hands, bottles and glasses. You need to ensure that as a result of these contacts the tap does not get contaminated with germs. In case you do find that the mouth of the tap has become dirty, clean and disinfect it with a dilute disinfectant such as bleach / hypochlorite (50 ppm available chlorine ) solution then discard the first 2 litres of Pureit water that flows through the tap.