The residual fraction is that which includes all the waste that has not been collected in the selective collection fractions and that, therefore, cannot receive quality recycling.
Moving towards a zero waste society means reducing as much as possible the amount of waste collected with the residual fraction.
Evolution on the amount of residual fraction generated per capita in Catalonia
Source:Catalan Waste Agency
The residual fraction generation per capita in Catalonia has been reduced by 43% in the period 2000-2022, although it has stagnated at around 300 kg/inhabitant/year since 2012.