An ongoing study of COVID-19 levels in wastewater conducted by the University of Saskatchewan has found there are less traces of the virus in some of the cities it is tracking. The University of Saskatchewan and Global Water Futures program have been examining wastewater samples from Saskatoon, Prince Albert and North Battleford since the summer of 2020. Their goal is to track the spread of COVID-19 in the community through wastewater, with their results usually dictating a rise or fall about a week in advance of changes in cases.