Super-repellent coating helps toilets save water

Engineers at Penn State University have developed a super-repellent coating for toilets that leads to cleaner and more efficient flushing.More than 141 billion litres of water are used just to flush toilets each day, with millions of people around the world affected by water scarcity at the same time. According to the Penn State team, its coating can reduce the amount of water required to flush a toilet cleanly by 50 per cent, from six litres to just three litres.
Engineering consumer technology