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Recent studies have shown that SARS-CoV-2 is present in the sewage of cities, which many have problems both in the collection and treatment of sewage, being largely discharged directly into water resources. The municipality of Rio Grande/RS is an example, as in addition to presenting these problems, it has a flat topography with low drainage capacity and many occurrences of flooding and flooding on the water margins. Thus, this study aimed to analyze the current conditions of basic sanitation in this municipality and identify the main areas of concentration of discharge of contaminated water and possibly infected by Covid-19, relating to the number of cases infected with this disease in these areas. The methodology was based on a bibliographic review and data survey from the City Hall, Brazilian Institute of Geography and Statistics (IBGE) and Companhia Riograndense de Saneamento (CORSAN). The results point to the need for more installation of drainage and sewage networks due to their insufficiency, in addition to the implementation of public policies regarding the installation of infrastructure and management on the banks of water resources, and even more studies and collection of water from the points disposal of sewage and other effluents to verify the presence of SARS-CoV-2 and if there really are possibilities of contamination through the water.

The present study aims to analyze what are the current conditions of air pollutant emissions during three quarantine weeks of Covid-19 in different countries and what are the future perspectives. For this, we performed a bibliographic review, survey of data from national and international institutions and use of an interactive map of the Windy.com Application. It was possible to see in this study that despite the global reduction in emissions, and the effort on the part of some countries to reduce it, there are still challenges to verify the impacts of Covid-19 in this sector. The economic crisis installed at that moment calls into question the future conditions of implementing cleaner technologies in a short period of time.