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This paper is part of a project carried out by Universidad Militar Nueva Granada, Bogotá, Colombia, in order to create a prototype for the recovery of metals coming from small and medium-sized enterprises belonging to the galvanic sector in Bogotá. As a result, we used analytical methods that allowed us to determine the metal concentration in the water as well as its content after carrying out the electrocoagulation. Generally, these methods require using sophisticated equipment, and small and medium-sized enterprises cannot afford it. During the last century, a huge amount of polluting material coming from farming, domestic, and industry water has been generated in aquifers, which affects the soil. In order to mitigate the environmental impact, we look to quantify these remains in watery samples by controlling concentrations of wastewater discharges generated by industries. Usually, the atomic absorption technique is used when quantifying, but the high cost of the equipment does not allow non-specialized laboratories to use it. For this reason, we want to adapt an analytic technique in visible spectrophotometric that enables the determination of Zn2+. In order to do this, it is necessary to determine the length of the optimum wage the spectrophometer should use, along with the right amount of reactants to develop the right chromophore for each reading. This study also analyzes parameters regarding time, temperature, and pH in order to establish the best conditions a chromophore is produced and to obtain an adequate absorbency reading, whose value is used to elaborate the calibration curve that allows interpolating Zn2+ content values in order to quantify. [ABSTRACT FROM AUTHOR]