This work is focuses in to develop an As(V) identification technique in an aqueous medium with KCl and KI as background electrolytes, in low and high concentrations from water purification technologies and water wells. A technique of electro recovery of arsenic was developed by the application of a potential in acid solution in order to reduce As(V) and As(III) present in drinking and rejection water coming to mining activities, and process like Capacitive deionization and inverse osmosis.