As for the cleaning frequency for drinking water equipment, among schools above senior high
school level, 52% clean their equipment every
month and 38% clean their equipment every half
a year
An investigation is also conducted to check the time for replacement of filter.
Thirty-two schools replace their filter shorter than
1 month, and only one of them produces a microbe
content higher than the standard value, indicating
an unqualified rate of 3.1%.