Kouassi Dongo: Analyse des déficiences dans la gestion du drainage urbain et des déchets solides et liquides dans les quartiers précaires de Yopougon (Abidjan, Côte d’Ivoire): Approche cartographie-SIG, modélisation et socio-anthropologie

PhD-thesis within the framework of the NCCR North-South, University of Cocody, Abidjan, co-supervised by Prof Marcel Tanner, Swiss Tropical Institute (2006)

This study takes place in the municipality of Yopougon in Abidjan, Côte d’Ivoire. The management of urban drainage and solid and liquid waste in the informal settings of Yopougon are insufficient and thus affect the life quality and health of its inhabitants. The study aims at contributing to the mitigation of urban environmental problems and thus at improving the quality of life of the dwellers in informal settlements. Following a trans-disciplinary approach (cartography, sociology and epidemiology) it analyses in the first hand the sanitation system and its links with environmental factors. The mapping of urban georisks (such as erosion, landslide and flood) and of environmental factors (distribution of solid waste dumps, stagnant wastewater sites, etc.) evidences the superimposing of such syndromes. It is shown that urban georisks could be mitigated thanks to the improvement of the drainage. Secondly, the study looks at how local stakeholders and actors perceive and act in relation to that issue. The results show a general lack of collaboration between actors and a lack of awareness of sanitation by the inhabitants, which negatively affects any effective management and increase health risks. In a third part, the study looks for solutions to mitigate the syndromes linked to drainage and sanitation. These findings are particularly useful for authorities responsible for urban planning and development.