Speaking of water usage, do all commercial ice machines that make clear cubes use a constant supply of water running over the cooling plate to do this, or does this extra water go right down the drain, or does it get recycled? I know say on our house refrigerator/ice maker the valve only allows a timed amount of water in, so no waste. But on our commercial unit at work I can hear water going down the drain while it is making new cubes. If so on all machines I would think water bills would be astronomical in say the Keys.