This research evaluated the settlements occurring in the municipal solid waste mass, confined in three lysimeters, considering the influence of the biodegradation of these wastes, by physicochemical characterization of the leachate produced. The physicochemical variables studied were: Chemical Oxygen Demand (COD), Nitrogen-Ammonia, Hydrogen Potential (pH), Volatile Fatty Acids (VFA) and Total Alkalinity. The measured settlements were analyzed based on the biodegradation phases of the confined wastes. Currently, the MSW is in the methanogenic phase of anaerobic biodegradation.