The ongoing study of wastewater in an effort to track the prevalence of COVID-19 in Saskatchewan's larger communities has recorded among some of the lowest levels of viral load since January, according to the researchers behind it. The Global Institute for Water Security has been regularly testing wastewater samples in Saskatoon, Prince Albert and North Battleford. The viral loads in each city are based on an average of three measurements over the week and measure the number of particles, in the tens of thousands, in 100 mL of sewage. The result provides insight into how much virus that causes COVID-19 is in a community — often a cautionary report before a more tangible rise in case numbers and hospitalizations.