Food waste is the next largest fraction after paper for all cities. We found the nutrient enrichment impact category to be especially sensitive to changes in this fraction. The challenge with food waste is often the way in which it is reported. In some waste composition analyses food waste is reported together with garden waste in a single organic waste category, while others report the food waste category separately (Bernstad et al., 2011; Gentil et al., 2009). It is important to be aware of this difference, as food waste and gar¬den waste often have different routes in the waste management system, and therefore also different environmental impacts.