Corrigendum to “Defining the methodological approach for wastewater-based epidemiological studies—Surveillance of SARS-CoV-2” [Environ. Technol. Innov. 23 (2021) 101696]

The authors (Kopperi et al.,) regret that after publication, the authors have been made aware of one error in Figure section. Fig. 3(a) with the title C${}_{\mathrm{T}}$ values of E gene, N gene, and ORF1ab $x$-axis is showing the dates of 2021 (4/12/2021 to 11/12/2021) which instead should be labelled as 2020 (1/12/2020 to 11/12/2020). The error has been corrected in the article and the revised figure is as follows.

Fig. 3.

(a) C_T values of E gene, N gene, and ORF1ab.

The authors would like to apologise for any inconvenience caused.