This book reviews the recent challenges and future perspectives involved in the wastewater-based epidemiology (WBE) for COVID-19. The book aims to improve the monitoring of COVID-19 in wastewater by focusing on recent scientific studies in the surveillance and treatment of wastewater containing SARS-CoV-RNA, assessment of COVID-19 in the community and delivering a new scientific understanding of prevalence and re-emergence based on the WBE. It also provides a global perspective on effective detection methods for the analysis and interpretation of the RNA count of SARS-CoV-2 virus in wastewater and predicts the effects wastewater may have on the infection rate. Readers will find in this book case studies from France, India and Southeast Asian of non-invasive population-based monitoring of SARS-CoV-2 through sewage surveillance, and will learn more about the virus behaviour and transmission in different environmental settings. The significance of membrane technologies for virusremoval from water is also addressed in this book, as well as advanced techniques for identifying, quantifying, and characterizing SARS-CoV-2 in activated sludge and wastewater. The book provides a great interface to researchers such as microbiologists, environmental engineers, data scientists and civil engineers, emphasizing issues related to the current monitoring methodology. Furthermore, it also encourages researchers and policymakers by raising awareness of potential new methodologies for wastewater surveillance and accurate monitoring of COVID-19.