The complex network of water distribution within the Mexico City Metropolitan Area is managed by the Federal District, the State of Mexico, and the National Water Commission. The District Federal, serviced through the common water distribution system, includes 73% of water sourced from well-fields, 18% through the extensive Cutzamala water system, 6% through the Lerma water system, and 3% water from rivers and springs. Residents who do not have piped access rely on tank trucks, local wells, or springs for water access. Since entering the era of urbanization, the overwhelming water demand has caused the depletion of aquifers, maintenance inefficiency, poor water quality, high costs, and far-reaching inaccessibility leading to a major water crisis for the 20 million people residing there today.