This study combined both qualitative and quantitative approaches and included a review of Market Based Sanitation literature. The mixed-methods formative research employed key informant interviews, focus group discussions, and household interviews. A total of twelve focus groups (six with men and six with women) were carried out in the six selected villages. This study also included 42 individual interviews with the different stakeholders, including with businesses already engaged in WASH activities and potential businesses, masons, artisan repairers, spare parts vendors, technical services in charge of water and sanitation at the commune level, and other organizations using marketing approaches to improve WASH coverage. In addition, 120 surveys were conducted with heads of households.