Water supply and sanitation in Senegal is characterized by a relatively high level of access compared to the average of Sub-Saharan Africa. One of the interesting features is a public-private partnership (PPP) that has been operating in Senegal since 1996, with (SDE), a subsidiary of Saur International, as the private partner. It does not own the water system but manages it on a 10-year lease contract with the Senegalese government. Between 1996 and 2014, water sales doubled to 131 million cubic meters per year and the number of household connections increased by 165% to more than 638,000. According to the World Bank, "the Senegal case is regarded as a model of public-private partnership in sub-Saharan Africa". Another interesting feature is the existence of a national sanitation company