In 2015, Sheffield engineers hung ordinary tampons inside 16 drains for three days; nine glowed under ultraviolet light, exposing sewage entering local rivers

In a unique approach, engineers in Sheffield implemented the use of tampons in 2013 to pinpoint sewer misconnections. These tampons emitted fluorescence when exposed to ultraviolet light, revealing contamination from household products. This innovative technique, developed in collaboration with Yorkshire Water, provided a budget-friendly method for tracking pollution sources in drainage systems, significantly aiding in the quest to mitigate sewage-related issues.
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