In Reunion Island, 65%, 13.7% and 21.4% of household wastes are landfilled, recycled and composted, respectively. Significant environmental burdens are caused by current waste management (WM). Indeed, a new WM strategy ensuring energy recovery by gasification of residual household wastes (RHW) will be implemented. Before waste treatment, its characterisation is a primordial action [1,2]. The present work aims at analyzing the physico-chemical properties of different waste compositions.