Can anyone explain to me why we use water citerns to store the water to flush the wc in this country? They take ages to refil and, in busy locations, can be a nightmare for those trying to flush when following someone else into the cubicle. In France I have often used loos which have a lever or push flush which dispenses a niagara of water direct from the mains. It's really efficient and can be used time after time. Why don't we do the same?