Brushing gold teeth and rubbing wedding rings as we wash our hands is contributing to an estimated £13 million worth of precious metals flushed away every year
Analysis by Thames Water found that the level of gold in sewerage systems was comparable to those found in working mines.
Hazel Prichard, a geologist from Cardiff University who has been studying precious metals in urban waste alongside Thames Water, by investigating the incinerators used to burn off sewage sludge.
“We were stunned,” she told The Times. “They were all consistently high in gold.”