For an adequate planning of waste management systems the accurate forecast of waste generation is an
essential step, since various factors can affect waste trends. The application of predictive and prognosis
models are useful tools, as reliable support for decision making processes. In this paper some indicators
such as: number of residents, population age, urban life expectancy, total municipal solid waste were
used as input variables in prognostic models in order to predict the amount of solid waste fractions. We
applied Waste Prognostic Tool, regression analysis and time series analysis to forecast municipal solid
waste generation and composition by considering the Iasi Romania case study. Regression equations
were determined for six solid waste fractions (paper, plastic, metal, glass, biodegradable and other
waste). Accuracy Measures were calculated and the results showed that S-curve trend model is the most
suitable for municipal solid waste (MSW) prediction.