Parameter Before electrocoagulation After electrocoagulation Turbidity, NTU 112.7 4.15 pH 8.03 8.31 Temp, °C 16.4 17 COD, mg/l 14.84 7.58 TDS, mg/l 1258 1118.4 Algae number, Cell/ml 396746 0 Dissolved Al, mg/l 0.325 8.5

Table 3: Characteristics of raw water influent before and after electrocoagulation.