They say that one of the biggest water wasting activities is long showers. Yes, I am guilty of this. Even hotel bathrooms warn us to use water sparingly. This is actually where Paul Priestman, director of U.K. design firm Priestmangoode, got the idea for the Waterpebble.
The Waterpebble is, for lack of a better word, a pebble-shaped device that is made for the floor of the shower. Some sort of special sensors in the Waterpebble can sense how much water has flowed past it and down to the drain, and shows this amount with an indicator light.
The green light means that your shower is the proper length. As long as it is still on, you are saving the Earth. The yellow light is, of course, a cautionary alarm, as you have used just enough. As you might have guessed, a red light means that you should stop your shower now.
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