Home and community composting represents a more efficient and sustainable alternative than external treatment of the organic fraction, since it allows quality compost to be obtained in the same home or municipality where the waste is generated, in addition to allowing the involvement and awareness of citizens about the importance of transforming organic waste into compost to return nutrients to the soil.
Evolution of the number of composters in Catalonia and the tonnes of organic waste composted
Source:Prepared by Rezero on the basis of data from Catalan Waste Agency
* Two types of composting are distinguished: individual self-composting is that which is carried out in households, and community composting is that which is carried out in community spaces. In addition, within each of these types, a distinction is made between exclusive composting - if the inhabitants only have composting for the management of organic matter - and complementary composting - if they also have a selective collection service for organic matter.
Home and community composting of organic waste has increased by 40% since 2012, with individual self-composting being the option carried out mostly.
Currently, composting represents only 1.7% of the organic waste managed, including those that are selectively collected (organic waste thrown into the rejection fraction is not taken into account).