This CEN Workshop Agreement (CWA) provides guidance for the implementation of biowaste selective collection schemes. This CWA also paves the way to increase citizen engagement, as this is crucial for the successful implementation of urban biowaste selective collection schemes. It is intended to be used by city managers and municipal waste managers with interest in implementing the selective collection of urban biowaste to produce high quality biowaste (i.e. minimal presence of non-required fractions) which can be then used in robust valorisation processes with attractive business cases.