This project proposes for Ontario a transformative approach for identification and surveillance of COVID-19 and prediction of COVID-19 outbreaks based on wastewater-based community-testing epidemiology. WE will identify and measure SARS-CoV-2 RNA and molecular biomarkers of health excreted by populations and use modelling to predict the special-temporal occurrence of emerging outbreaks in sewage wastewaters. Our team will provide a tool for public health officials that delivers test results they need to implement appropriate short-term responses to COVID-19 community spread and long-term planning for disease prevention.