The water sector in Senegal is one of the most developed in Sub-Saharan Africa. Access to water in urban areas is almost universal, but sanitation lags behind. The government’s urban sanitation strategy calls for the development of on-site solutions at municipal level, based on the approach of the Programme d’Assainissement Autonome des Quartiers Peri-urbains de Dakar (PAQPUD). The predecessor of the OBA project, PAQPUD was a large result-oriented, pro-poor program that provided 63,000 facilities, as well as small-bore sewers, increasing sanitation coverage by 22 percent in the target areas in four years. PAQPUD ended in 2005 for lack of funds, leaving demand for 74,000 demands unmet.