Fig. 6

Comparison between reported microplastic concentrations in drinking water treatment plants (DWTP) (A) and tap water (B). References for DWTP: Pivokonsky et al., 2018; Wang et al., 2020; McQuilkin et al., 2020; Kirstein et al., 2021a; current study; Mintenig et al., 2019; Uhl et al., 2018. References for tap water: Kosuth et al., 2018; Uhl et al., 2018; Strand et al., 2018, Shruti et al., 2020; Tong et al., 2020; Weber et al., 2021; Zhang et al. 2019; this study