hot stain n.— «Because there are what scientists call “hot stains’”…the parts of the Earth now running out of potable water. Hot stains include northern China, large areas of Asia and Africa, the Middle East, Australia...
toilet to tap n.— «Atwater plans to ramp up efforts to recycle wastewater for potable use, as Orange County has already done. (This process is sometimes disparagingly referred to as “toilet to tap.” In fact, it produces water...