People on boats could teach the rest of the population quite a bit about not wasting energy and water. When you depend on batteries for power and have a finite quantity of fresh water aboard, you don't waste. I was told the story of the boss of our boatyard getting incandescent with rage at some poor young official who came round to suggest that efforts were made to reduce water consumption. Apparently the young chap went away with a flea in his ear. Quite right too. I would be surprised if the 40 odd resident boats used a quarter of what 40 land dwelling would use.
They've just installed new pay meters for electricity for us non residential boaters, and now we can see how much we're consuming. Over a 24 hour period at the weekend using the fridge, the battery charger, the radio, the lights, and the water pump, we spent 15 pence!