H-1 and Li-7 NMR chemical shifts of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide-water solutions in the presence and absence of lithium bis(trifluoromethanesulfonyl)amide were determined at 293.2 K over a wide range of water concentrations from 0.0156 to 1.16 mol kg(-1). These results revealed the attractive interaction between water molecule and Li+ as well as the hydrogen bonding among water molecules. Moreover, self-diffusion coefficients of water, 1-ethyl-3-methylimidazolium cation, Li+, and bis(trifluoromethanesulfonyl)amide anion in the ionic liquid solutions at various water contents were determined by H-1, Li-7, and F-19 NMR techniques. It was found that Li+ is averagely hydrated by eight water molecules in the ionic liquid solutions. Furthermore, Li-7 longitudinal relaxation times of Li+ in the ionic liquid solutions at 293.2 K were measured with two different magnetic fields and various water contents. The mean one-jump distances of Li+ in the ionic liquid solutions were estimated from the correlation times and the self-diffusion coefficients. A comparison between the hydrodynamic radius and the mean one-jump distance of Li+ suggested the formation of water channels in the ionic liquid solutions.