In the crystal of title compound, C(16)H(19)FN(3)O(+)·C(10)H(5)O(8) (-)·H(2)O, the water mol-ecule and the ions are connected by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds and π-π stacking [centroid-centroid separation = 3.602 (1) Å] between the benzene ring and the pyridine ring, generating a three-dimensional supra-molecular structure.