Thanks! Yes, water consumption was definitely high. Part of the issue was that the heads were freshwater not saltwater. Odd for a charter boat.
The other issue was obviously getting everyone to shorten their showers. It got much better as the week went on but with 6 people showering evey day, we did got through quite a bit of water.
I just push the green button and the water maker and when the tank is full I push the red button.