Poop (i.e. human waste) contains millions of bacteria, viruses, and other disease-causing organisms called pathogens. Quite conveniently, in today’s modern world, our poop is easily flushed down the toilets. But the story does not end there. Pathogen-laden faecal waste (alongside wastewater from homes, businesses, schools, industrial facilities etc.) finds its way through the wastewater network into wastewater treatment plants where it is subjected to some form of treatment.