The specific generation of separately collected food waste(kg/household, week) was determined based on weighting ofseparately collected food waste. The source-separation ratio (mass%), defined as the mass of collected source-separated recyclable material in relation to thesum of the same material – sorted, mis-sorted and unsorted –in disposed waste. Ratio of impurities (mass%), defined as the mass of mis-sorted(i.e. incorrectly source-separated) materials in relation to alldisposed waste in the particular fraction (correctly sorted andmis-sorted). The specific food waste generation (kg/household, week) wasdetermined based on results from waste composition analyses,adding amount of food waste found in residual waste to theamount of food waste separated by households, excluding theweight of mis-sorting.