San Fernando Plant is located in the Municipality of Itagui on the border with Medellin, being a neighbor of the Central Wholesale Food. Receives wastewater from residences, industry and trade Itagui, Envigado, Sabaneta, La Estrella, of the village of San Antonio de Prado, then also receive Caldas Township.

Sewage Plant reach through the sewer routes located in neighborhoods, which discharge to the collectors parallel to the streams, which in turn are connected to interceptors located on each side of the river and finally go to the site of the plant San

Fernando.

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In Order No. 048, August, 1993, the Honorable Council of the Municipality of Caldas, establishing the Ecological Reserve of San Miguel for the ecological importance of the area as he explains in his statement: "This book is part of the ecosystem high Andean called "cloud forest" for its constant cloud cover and by the confluence of moisture-laden winds, from the north of Valle de Aburrá. Presents an average temperature of 14.5 degrees Celsius and rainfall between 2,500 and 3,600 millimeters. This forest type scarce in the country, has an own biodiversity and numerous water sources that facilitate the survival of the species that comprise it. "

The Wildlife Refuge has an area of 1358.46 ha, of which 60%. Are owned by the Ministry of Environment of the Municipality of Medellin, divided into three zones: 372.79 reservation ha., Refugio area with 565.67 ha. And with 420 ha wilderness area. Access is restricted and only allows entry of groups of researchers and environmental education. This is a place which is to protect natural and all activities are geared towards environmental education and research ecosystem.

The first manifestations of pollution Aburrá Valley initially felt in the 60 streams that are located in the most densely populated area of Medellin and flowing into the river without any treatment. The presence of these streams made for the community always

be easy to get rid of their waste liquids and solids often.

But as time passed, and the pressure of high population growth and industrial wastewater discharges exceeded the limit of assimilation River generating serious health problems, biological, environmental and aesthetic around and in close proximity to the streams.

Although the river is not navigable with which many dream, nor is that of clear water where you could fish, who knew the grandparents, the Medellin River flow has more oxygen and less polluted than in previous decades. In 2010 the Medellin River will have 80 percent less pollution thanks to for over 25 years Public Enterprises of Medellin (EPM) has been developing the "Sanitation Program Medellin River and its tributaries."

The treatment plant wastewater San Fernando was perhaps the most anticipated work by the Antiochian community, which is part of the project. It receives waste residential and industrial sector in the municipalities of Envigado, Itagui, Sabaneta, La Estrella and Caldas later. 70% of this wastewater comes from purely human waste and 30% is from the industries.

It is located in the municipality of Itagui near Central Wholesale, in a park that has 40,000 natural species of ornamental plants, 2,000 trees and large number and variety of birds. Occupies two lots, each with a total area of 140,000 square meters.

The Christmas lights in Medellin is a traditional daily event over the years, widespread availability of energy resources and massive budget and acceptance by both local citizens and by the thousands of tourists, has become a huge party in town , full of lights and cultural programming.

The "Lighting" Christmas has become notorious Medellin: more than 14.5 million bulbs (2008), 300 km of cables illuminated, 21 parks, 4 km of travel lighting in the city center and cultural programming throughout the month of December make one of the best times to visit Medellin. On December 7 lights and lighting at night is done Dance Parade, Myths and Legends, one of the most important traditions of the city.