The efficacy of leaf extract of Moringa oleifera using different solvents such as acetone and benzene on domestic wastewater treatment was investigated for 3 consequent days and their phytochemical analysis were analyzed. The extract was effective in the clarification and sedimentation of total solids in the waste water sample. Among the two solvents, benzene showed highest reduction of TDS (25mg/l) on 3rd day. The hardness of the water was also decreased remarkably after treating with the extracts. On the third day sample treated with 10 ml benzene extract showed higher reduction in hardness (190mg/l). Both 5ml and 10ml benzene extract reduced more sulphate content on 1st day itself (10ml/l and 7mg/l). Nitrate content was reduced more by 10ml benzene extract (12.2mg/l).