Having identified the correlation between the order of the water layers and their entropy, it is still surprising that all computed local entropies of the considered interfacial water layers are higher than those of bulk water. Naively one would expect that the entropy of the interfacial water molecules is lower than the one of bulk liquid water molecules. However, recent experimental studies of two-dimensional water layers on a porous hydrophilic silica glass surface estimated that the entropy of these 2D water layers should be twice the one of bulk water. They attributed this high entropy to the fact that due to the two-dimensional topology the ideal tetrahedral bulk water symmetry can hardly be realized in two-dimensional water. This argument might well also be valid in the interfacial sys-tems considered in our study. The higher entropy of interfacial water has also been observed in simulations of graphitic carbon surfaces, where the increased entropy was attributed to destabilization of the interfacial hydrogen bond network which in turn increases the low-frequency translational and librational DoS. Besides entropy, also the adsorption energy of a single water molecule exhibits strong correlations with the water density and orientational density. The comparison of Figure and 7 show that the most ordered interfacial water structures are observed for the surfaces with the strongest water molecule adsorption. The more structured interfacial water layer and stronger adsorption energy also lead to more oscillatory electrostatic potential profiles as shown in Figure .