This report 82 presents the results of SARS-CoV-2 contamination of wastewater at the entrance of the 10 wastewater treatment plants (WWTP) analysed at the beginning of the week 26 of 2021. The WWTPs of Hespérange, Boevange and Beggen were not analysed here, but will be on the second sampling of the week.
The SARS-CoV-2 RNA flux measured in wastewater treatment plants shows a still moderate national prevalence of the virus. A slightly increase is observed for the last analysed samples, with a SARS-CoV-2 flux around 1 x 1011 RNA copies per day per 100,000 equivalent-inhabitants. The main contributing WWTP being Pétange, Schifflange and especially Echternach, for which a significant increase is detected.
However, it is difficult to identify a real trend from a single analysis, so the results must be interpreted with caution. The analyses of the next few weeks will have to confirm or not this result.