Challenges and Experiences of Managed Aquifer Recharge in the Mexico City Metropolitan Area.

The Mexico City Metropolitan Area (MCMA) is a significant and important urban center in North America, covering an area of approximately 9500 km with a population of almost 23 million, yet the water supply remains unsustainable. The total water demand in the MCMA is 84 m /s and is provided by groundwater (63% or 53 m /s), imported water (27% or 23 m /s) and recycled water (10% or 8 m /s). The natural recharge of the MCMA aquifer is approximately 23 m /s, indicating an overexploitation of groundwater resources of approximately 25 m /s (800 Mm annually), a reasonable future goal for recharge in the MCMA.