Bathwater can be recycled, you know. It is possible to use the same bath water for an entire week (assuming one bath a day for most people). All you really need is a small auxiliary heater to warm the water up in the tub prior to bathing, and there is a simple plug-in bathwater heater now available from the UK, and it was the inventive genius of Nigel Tufnel which made this all possible. (He's not just a rock n' roll visionary.) I recommend that everyone get one of these auxiliary bath water heaters and do the Earth a big favour by recycling your bath water. Do it now.