in the past floods and investments in flood protection were mainly concentrated in the valley of mexico and the southern border but the central gulf and yucatan peninsula are now also at risk the hurricanes in affected municipalities in coahuila nuevo leon and tamaulipas municipalities in the states of campeche puebla veracruz and in the states of chiapas and oaxaca approximately cities with a population of more than inhabitants are located in river basins with high flood risks however policy implementation is uneven river basin councils are not yet fully operational and the regulatory framework for drinking water and sanitation is fragmented there is a particular need for efforts to increase the water productivity and the costefficiency of water policies