We investigate the universality of the relaxation processes for high-water-content aqueous solutions in a supercooled and glassy state, to clarify the molecular dynamics of water in aqueous solutions. The appearance of the additional process at the crossover temperature is due to structured water arising, and it is a universal feature of aqueous solutions. The normalized relaxation strength of the beta process plotted against reciprocal temperature obeys -3 power law that is due the arrangement region of the water molecules through the tetrahedral hydrogen bond structure.