“…Whereas successful studies have been mostly carried out in the chemical exposure side, namely, the consumption of illegal drugs (Mastroianni et al, 2017;Thomas et al, 2012), pharmaceuticals and personal care products (Burgard et al, 2014;Gao et al, 2016), tobacco (Castiglioni et al, 2015;Ryu et al, 2016b) and alcohol use (Ryu et al, 2016a), pesticide exposure (Rousis et al, 2017), etc., and on genetic biomarkers (Ahmed et al, 2020;Yang et al, 2017), studies aimed at characterizing wastewater metabolomics and proteomics (i.e., the biological response side) are lacking. Even though several biomarkers have been proposed for that purpose, notably protein biomarkers, to the best of our knowledge, no systematic studies on wastewater proteomics have been published (Rice and Kasprzyk-Hordern, 2019).…”