Municipal solid waste amounts increased (Fig. 2d) being determined by two reasons: a higher consumption of the population and a higher proportion of the population served by public health services in a centralized system (this was measured by the sanitation company and the municipality that have signed contracts with the population to collect waste produced by the last ones and depending on the number of residents containers with a certain capacity were given for every household newly registered in the centralized system) (Doba et al., 2008; Ghinea, 2012). MSW composition consists in biodegradable waste, which represents the fraction with the major percentage (approximately 50%), followed by paper and cardboard, plastic, glass, metals (Doba et al., 2008; Ghinea, 2012). The waste composition in the urban area in Iasi in 2008 is presented in Fig. 2e. In Iasi city, MSW is collected by a public company, and separate collection of waste is carried out usually for materials with high market values, mainly in pilot projects.