Waste and its management are of great importance for the future and for the sustainable development. Choosing the right way of municipal waste management system, its efficiency, economic sustainability, and acceptability largely depends on its composition. Municipal waste has several useful properties, which can be materially and energetically recovered by separate collection and proper disposal and thus contribute to reducing the amount of waste disposed of in landfills. The paper analyzes the composition and quantity of municipal waste collected by local self-government units within the organized waste collection. To meet the objectives of the European Union, a projection of future quantities by individual components, as well as the total amount of municipal waste in the Brod-Posavina County were made and the possibilities of using valuable components of waste were analyzed. Brod-Posavina County strives for sustainable management of municipal waste, which will contribute to reducing the amount of waste disposed of in landfills and its adverse effects on the environment. It will also increase the processing of separately collected municipal waste, which is evident from the research results.