What a waste...

This evening in barnes & noble, as I exited the restroom, I noticed a grown woman standing in front of the sink brushing her teeth. At first I thought, "good for you, taking care of your teeth..." then, noticing that she left the water running while brushing, I thought, "what a waste...". Now, I'm not one who's big on recycling, ozone and all the 'going green' goings on, but come on! Turning the water off while you brush...that's elementary.