This website is edited by the Luxembourg Institute of Science and Technology (LIST) on behalf of the consortium members within the SUPERVIR project - Establishment of a long-term monitoring system for pathogenic viruses via wastewater in Luxembourg (01.12.2022 – 30.11.2025).

Learn more about the SUPERVIR project

The table below lists the wastewater treatment plants (WWTPs) from which samples were collected. It includes the maximum capacity and population served by each WWTP. Each entry also indicates the virus being monitored and whether surveillance is still active at the site.

Some of the data presented on this website was gathered during previous collaborative projects with the institutes listed below. Their valuable contributions were instrumental in making this resource possible.

01.01.2022 – 31.12.2024

One of the objectives of the VIRALERT project, which was developed jointly by LIST and LIH, was to demonstrate that wastewater surveillance could be used to detect other enteric and respiratory viruses beyond SARS-CoV-2. To this end, wastewater samples were collected weekly by the wastewater treatment plant operators over a two-year period (2022-2024). Following the concentration of the wastewater samples (LIST) and extraction of viral RNA (LIST & LIH), the viruses of interest were quantified by RT-qPCR (SARS-CoV-2, enterovirus and norovirus) and RT-ddPCR (influenza A and B, and RSV) by LIST, and by RT-qPCR (influenza A & B, RSV and seasonal human coronaviruses) by LIH. Data handling and curation were performed using informatics programmes jointly developed by LIH and LIST. 
Only data generated at LIST are presented on this dashboard.

For more details, visit the VIRALERT project pages hosted by the LIST and LIH.

01.10.2021 – 30.09.2022

The objective of the CORONAVAR project was to determine if wastewater surveillance could identify major SARS-CoV-2 variants circulating in the population, using advanced molecular biology and sequencing technologies. Sequencing analyses were carried out in close collaboration with LNS and LCSB. Although variant monitoring data are not visible on the website, part of this project's funding helped generate data for the generic monitoring of SARS-CoV-2 in the country's wastewater, conducted by LIST.

01.06.2020 – 31.03.2021

The CORONASTEP+ project aimed to assess the presence of SARS-CoV-2 in domestic wastewater and evaluate its potential for tracking virus circulation in the population at the national level. The project focused on understanding how virus shedding patterns in infected individuals affect data collected from wastewater, while also assessing the infectious hazard of virus-containing wastewater. Key methodological objectives included the development of concentration procedures for enveloped viruses (LIST), the implementation of cell culture-based infectivity tests (LIH), the analysis of stool samples (LIH & LCSB) and the use of high-throughput sequencing (LNS & LCSB). While some research outputs are not displayed on the website, the project contributed to LIST's national SARS-CoV-2 wastewater surveillance program.

01.04.2020 – 30.11.2022

The CORONASTEP project was the first LIST internal project to implement SARS-CoV-2 monitoring in wastewater in the early stages of the pandemic in Luxembourg. The main objectives were to validate the wastewater concentration method for SARS-CoV-2 and to establish RT-PCR assays. SARS-CoV-2 molecular detection protocols (Corman et al., 2020; CDC, 2019) were first implemented and evaluated at LIH and kindly transferred to LIST.