How can I stop my three teenagers from taking really, really long showers?

water conservation. But lately they’ve become much more responsible after we explained how costly it is to the environment when they use more hot water than necessary in the bathroom. That said, it sounds like you might have already tried something like this. If wise words haven’t worked, try installing a low-flow shower head. Besides reducing the amount of water consumed, low-flow equipment also makes showering considerably less enjoyable, despite manufacturer claims to the contrary. Look for a unit that delivers 2 1/2 gallons of water per minute or less, and show your kids that their wasteful habits are so extreme they’ve made it to the newspaper.