Catalan Surveillance Network of SARS-CoV-2 in Sewage (Q6725722)

The Catalan SurveillanceNetwork of SARS-CoV-2 in Sewagestartedin July 2020to monitor 56wastewater treatment plants (WWTPs)all over the country representing the sewage from the80% of the total population.The sampling plan consist in a weekly collection of24 hours-composed-flow proportionalwater samplefromthe entrance ofeachWWTPs.The raw sewage samples are send to references laboratories foranalysis within 24h after collection.Samples are concentrated, the RNA extracted and finally amplyfied using two target genes (N1/N2 or N1/IP4). Here, we periodically release the dataset of the results obtained for each WWTP analysed with sampling date, gene copies per litre for each viral target, the daily flow from the WWTP, rain events registered and extra comments. Moreover, since November 2021, the network analyses periodically the presence of Variants of Concern (VOCs) in the studied WWTPs. Raw data generated from sequencing is available upon request at coordinaciosars@icra.cat.