What criteria were used to decide on the optimisation?

One of the first criteria taken into account is the amount of waste produced. Some municipalities and/or areas with a low level of greening do not produce enough garden waste. For the 11 municipalities that switch to mixed collections, which include more green municipalities, operational and organisational choices have also dictated these changes. Lastly, for the municipalities and/or areas that remain with separate collections, it was mainly the large amount of garden waste produced that guided this decision.