Chromium contamination of the environment originates from various industrial activities, such as metallurgical, anodizing, dyeing, tanning and dyeing plants. The toxicity of the metal depends on its oxidation state. Hexavalent chromium is 100 times more toxic than trivalent. The permitted levels of Cr (VI) are 0.5 mg/L for effluent and 0.05 mg/L for drinking water respectively. In the present work, the removal of hexavalent chromium from real electroplating wastewaters is studied by the chemical coagulation and the electrocoagulation processes. All parameters that influence the effectiveness of the two methods, such as pH, coagulant dose, initial chromium concentration, applied current density and time of processing, are investigated and optimized. Finally, the two processes are compared and evaluated. The chemical coagulation occurs by adding the calculated volume of the coagulant solution FeCl3∙6H2O to 200mL of treated wastewater sample containing 300 mg/L Cr(VI), under rapid stirring at 200 rpm for 5 minutes followed by slow stirring at 60 rpm for 25 minutes. As can be seen in Figure 1, the percent removal efficiency of chromium is 34.97, 72.8 and 89.6% for coagulant doses of 100, 200 and 400 mg/L respectively. Maximum removal of chromium by 99.9% was achieved at doses of 500 mg/L or more. The electrocoagulation experiments were performed in a 500 mL cylindrical electrochemical reactor containing the same wastewater sample under stirring at 200 rpm. Three iron electrodes were used as electrodes in parallel (5 x 5 x 0.3 cm), each of them with an effective surface area of 25 cm2 and a distance of 1 cm. The electrochemical treatment achieved a rapid and effective 99.9% reduction of chromium. For current densities of 5, 10 and 15 mA/cm2, the initial concentration of 300 mg/L Cr (VI) was reduced below the permissible limits (0.5 mg/L) in only 35, 20, and 10 minutes, respectively. The efficiency of the two coagulation methods studied was compared on the basis of: a) the consumption of coagulant, electrode mass and electricity, b) the amount of sludge produced and c) the required processing time. The total costs for chemical and electrochemical coagulation were estimated at 1.03 €/m3 and 0.69 €/m3 of treated wastewater respectively. Both methods are effective in removing chromium from electroplating wastewater with the latter process being advantageous in terms of total cost and processing time.