The stakeholders involved in the chain of biocarrier use intervene in a wide variety of fields and the solutions available to them fall into many different categories. This raises the question of how to prioritise them.
Among the solutions proposed above, some are of a regulatory or administrative nature. Others are much more technical. In the absence of regulatory or administrative measures, the implementation of measures to prevent biocarrier leakage relies solely on the voluntary commitments of stakeholders. The role of environmental authorities is therefore crucial.
Based on the analysis of the incidents listed, it appears that certain particularly effective and inexpensive improvements could be implemented in priority to prevent biocarrier leaks into the natural environment. These recommendations could then form the basis of a charter of best practices, to be distributed within networks of actors in the sanitation field.
A summary of the proposed measures (Annex 3) is accompanied with an estimation of their cost-benefit rating. This indicative classification essentially highlights the measures that are easiest to implement. Multiple methods exist to determinate this ratio and should be based on the HIRA, which is specific to each installation.