The aim of this study is to identify the determinants of the deterioration of wastewater drainage systems in social and economic housing neighbourhoods such as Abobo-SOGEFIHA. To achieve this objective, a questionnaire survey of households was carried out, and a GPS was used to locate wastewater outlets. Interviews and photographs were also taken. The study showed that the population had almost doubled in 24 years, resulting in changes to and densification...