258968.fig.005
Figure 5: Comparison of mean total PTEs§ (μg/L) in tap water: baseline versus Post-FBS no feet versus and Post-FBS with feet. **Error bars represent ± standard deviation from the mean. §Potentially toxic elements (PTEs) were defined to be aluminium, antimony, arsenic, barium, cadmium, lead, silver, and uranium. **Kruskal-Wallis test found no difference between the three groups ( 𝑃 = 0 . 5 2 4 ).