Waste-water surveillance indicates the Omicron surge in COVID-19 cases appears to have plateaued or even begun to fall in major cities across British Columbia, Alberta and Ontario, but this type of monitoring is carried out on less than two-thirds of Canada’s population. Sampling sewage to find population-level transmission trends is one of the most reliable methods of tracking the spread of COVID-19 as the swift spread of Omicron has swamped testing regimes across Canada.