New York City communities are looking into the contents of their wastewater facilities for clues about the spread of the COVID-19 virus and how to stop it. They’re using water testing methods developed by Fulton Schools Professor Rolf Halden and his research team at the Center for Environmental Health Engineering at the ASU Biodesign Institute. Halden encouraged New York officials to increase the frequency of its sewage testing efforts and to do that testing at multiple locations. Halden is a co-author of a cost-benefit analysis that found using wastewater-based epidemiology in combination with clinical testing is much less expensive than using traditional methods that focus on testing individuals for the coronavirus infection. The article was also published in the Brooklyn Daily Eagle.