In this work of investigation the characteristics have been evaluated physical, chemical and biological of The Lagoon of "Patarcocha", located in the region Pasco, city of Pasco's Hill; who presents a pollution due to the fearlessness of garbage and unloads of effluent; it due to the insensibility of the population who lives about the Lagoon and to the lack of a ring collector of desague. The information in average obtained (for the period 2009-2010), for Patarcocha's Lagoon was: pH 8.27, temperature 11.17°C, metallic elements like the Ace 0.0114 ppm, Cd 0.0114 ppm, Cr 0.0049 ppm, Cu 0.0116 ppm, Faith 0.627 ppm, Mn 1.535 ppm, Pb 0.041 ppm, Zn 0.113 ppm. For the case of total Coliformes 11 x103 NMP/100 ml and fecal Coliformes 4x103 NMP/100 ml. On the basis of the compiled information, one proposed an immediate recovery (Reforestation of Patarcocha's Lagoon, construction of a fence perimÃ...