Fig. 3
a Distribution of removal efficiencies expressed as fraction retained in produced drinking water as compared to the (mixed) source water per production location, including removal efficiencies based on <RL in drinking water, for target chemicals per treatment type. Box extends from 25 to 75th percentiles and whiskers extent from 1 to 99th percentiles, size exclusion is applied on only half of the produced drinking water volume. b Relation between removal efficiencies for individual target chemicals for production stations where sorptive techniques are included and hydrophobicity (p<0.01, R2=0.02)