Textile wastewater treatment is one the most difficult environmental issues because it containsrnhigh color, high suspended solids, chemical oxygen demand (COD), pH, temperature, turbidityrnand toxic chemicals. The direct discharge of this wastewater without previous or properrntreatment into the water bodies, like lakes, rivers, etc. pollutes the water affecting directly andrnindirectly the water. This indicated urgent need to develop cost effective and efficient treatmentrnmethod. In this connection, coagulation is one of the most effective and simple to operaterntreatment methods to remove colloidal and suspended solid pollutants of textile wastewaters thatrntechnically need adding of either chemical or natural coagulant. However, use of chemicalrncoagulants has been criticized to have some limitations. Consequently, recently there is anrninterest to replace chemical coagulants by natural materials. The overall objective of this studyrnwas to investigate the removal efficiencies of blended inorganic and natural coagulants namelyrnalum and cactus mucilage. The evaluation of removal efficiency of the blended coagulants wasrndone for color, COD, TSS, and TDS before and after treatment. The raw textile wastewater wasrncollected from Arbaminch textile Investment group. The treatment process was carried out usingrna jar test at different coagulant dose, pH and mixing time values for constant other parameters.rnThe coagulant dose, pH and mixing time were the three factors considered in the treatmentrnprocess. The dose of the coagulants were 0.5-3 g per 500ml textile waste water whereas pH wasrnset at 3-11 and mixing time (flocculation time) 20-60 minutes. The pH was adjusted usingrnhydrochloric acid and sodium hydroxide (1M). The maximum removal efficiency of the blendedrncoagulant was obtained at coagulant dose of 1.75g, pH 7 and mixing time of 40minuties forrnColor, TSS and TDS removal but 3g, pH 3, 40minutes for COD removal and the removalrnefficiency was 74.3%, 73.9%, 62.3, and 74.5 % respectively and from the observed results thernoptimum conditions were at 2.194g of coagulant dose, pH 3.840 and 38.992 minutes of mixingrntime with rapid mixing 100 rpm for 2 minutes and slow mixing 40 rpm for 20-60 minute and 60rnminutes of settling time. At these optimum conditions 74.3 % color reduction, 71.177% CODrnreduction, 73.094 % TSS and 62.930 % TDS reduction was obtained.