Sorry if this topic has been covered elsewhere or is common knowledge to everyone out there....We are new to Hong Kong and while we love most things about it, are concerned by the color and cloudiness of the water that fills our toilet bowls (obviously when the bowls are clean). The water that comes out of the taps is clear, but we have a good filtration system installed. Does the toilet water come from a different source than the tap/shower water (it must)? And if so, what source (it is gross!)? I need to clean the bowls every other day to prevent scum from accumulating, much more frequently than I am accustomed to. Is this problem specific to my building or more widespread? Is there anything I can do to battle the constant scum buildup (apart from the every-other-day scrubs)? Is this water even sanitary? Should I insist everyone closes the toilet lid after usage? Thanks!