Abstract
Wastewater can be an important indicator of surface water contamination by pathogens, of which SARS-CoV-2 is one, so monitoring of wastewater at treatment plants is important. The virus has been shown to be present in the faeces of infected people, which can be detected much earlier than with medical tests. This will allow prediction of trends in coronavirus outbreaks in advance and may complement current measures to determine prevalence. In Slovenia, pilot monitoring was established in seven WWTPs in October 2020. This paper presents the results and analysis of the Maribor WWTP, where one to three 100 ml samples are collected weekly to detect the presence of SARS-CoV-2. A correlation can be observed between the evolution of the virus in the wastewater and the number of active cases detected by the National Institute of Public Health in the region covered by the WWTP. The presence of the virus in the wastewater is detected about two weeks before the increase in active cases. Some shortcomings and further issues of the wastewater monitoring are analysed.
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