| Sub-system | Global optimistic scenario | Global intermediate scenario | Global pessimistic scenario |
| Institutional framework | Performance of public policies and strong mobilization of resources | Performance of public policies and strong mobilization of resources | Ineffective public policies and poor resource mobilization |
| Living area | Improving waste management and adopting an ecological sanitation system | Improving waste management and adopting an ecological sanitation system | Poor waste management and rejection of the ecological system by citizens |
| Socio-cultural framework | Good social acceptability and good social behaviour change practices | Poor social acceptability and bad social practices | Poor social acceptability and bad social practices |