 There is no coherent national policy in terms of sector financing, subsidies, tariffs and service standards.The federal structure of the country and the dispersion of sector responsibilities between and within various levels of government make the development of a coherent sector policy all the more difficult.Between 1991 and 1999, as part of one of the world's largest privatization programs covering a range of sectors, water and sanitation concessions with the private sector were signed covering 28% of the country's municipalities and 60% of the population.