墨西哥谷
In November 2009, President [[Felipe Calderón]] launched a US$2.8 billion Water Sustainability Program for the Valley of Mexico through 2012. The program amplifies the earlier Program for the Sanitation of the Valley of Mexico. Its objectives are to avoid major floods such as the [[2007 Tabasco flood]], to treat all the wastewater collected, and to reduce groundwater overexploitation.