In recent years, a massive reconstruction and redesign of zones, motivated by both State and private investments, has created exciting areas of historic importance, entertainment opportunities and high quality residentials. These urban developments have been catered to elite communities mainly because this group economically supports the country (38% of the total national income is produced by the top 10%) and because the government, predominantly lead by PRI (Partido Revolucionario Institucional), has maintained a profit-oriented policy perspective. Thus, these developments have not only led to an increase of population, traffic and pollution due to inefficient urban planning, but have also pushed great amounts of low-income families to the edges of the city and have challenged the safety of the 11.5 million people that economically depend on the underground sector. This issue adds to the already critical condition of 40% of the population living in informal settlements, often without access to sewage network and clean water. The geology of the city, located in a mountain valley, further contributes to unhealthy living conditions, concentrating high levels of air pollution.