No differences can be identified between the region of Crete (2003–2004) and the region of Chania (1990) (and partly the region of Kos) regarding the MSW calorific value (HHV and LHV) and the moisture content. The C/N ratio in the region of Crete (2003–2004) has a lower value compared to other regions. The heavy metals content (Pb, Cd and Hg) does not present any remarkable variations between the different studied regions.