Our recent studies related to the properties of water/2-butoxyethanol mixtures, show the occurrence of some kind of molecular aggregation in the water-rich region of composition beyond a threshold alcohol concentration x₂^a≈0.0l. The observed behaviour suggests that for x₂<x₂^a the alcohol molecules are essentially dispersed and surrounded by “water cages” when the short-range order and microdynamic of water molecules are changed with respect to those of pure water. 2-Butoxyethanol molecules are in mutual contact at higher concentration only when almost all water is involved in hydration shell of alcohol molecules. A transition in a narrow range of alcohol mole fraction (0.01-0.04) appears from the data. This structural transition resembles, for some aspects, the micellization process. The main results of these investigations are reviewed and discussed in this report.