[Departement_IRSTEA]RE [TR1_IRSTEA]GES / USAGES(trad auto)Urban water and sanitation services in developing countries (DCs) do not provide access to adequate drinking water and basic sanitation for a variable proportion of the population, ranging from 10 to 30% depending on the continent. Faced with the financial difficulties of services, the issue of access to water for all has become an international issue involving international financial institutions, major international private operators and international NGOs. In addition to financial difficulties, there are also difficulties in building a sustainable governance model, i.e. one that is both effective and economically viable, but also socially acceptable. While public-private partnersh...