There were still water born diseases occurred in Police Academy like Morbili, Variola, Thypus, Conjunctivitis, Diarea Varicella, Herpes and DHF. Overall cases had the amount of 136 (in the year 2005) and 241 (in the year 2006) Those diseases may be related to the bacteriological quality of water. This research aimed to study the bacteriological quality on water supply system in Police Academy S…