Yup, I hear you, office on Queen's Road in Sheung Wan. We are lucky in that we installed a shower in one of our toilets so easy for filling buckets for flush water- otherwise not sure how we would get the flush water into the bucket in the tiny sinks.
Great fun when clients come to the office as well! Gives a great professional feel.
The only good thing about the water dept is that they have not billed me now for ONE WHOLE YEAR other than an initial 400 dollar deposit. Tried contacting them a few times, couldn't get through.
Our flush water did come on for a bit over the weekend and was BLACK. Lovely.