Greywater forms a major part of our domestic wastewater system. Proper Treatment and reuse of grey water can solve a major problem of water scarcity. Grey water is that part of our wastewater which is free from fecal matter and contains very low organic content and only a few pathogens. It becomes easier to treat greywater discharged from bathrooms, kitchens, and laundries. Properly treated grey water can be used for toilet flushing, irrigation, gardening of homes to reduce our water bills. Several treatment technologies have been developed in the past years to evaluate the performance of greywater treatment. Use of Rotating Biological Contactor (RBC) along with a mathematical model was done to analyze the different concentrations of grey water i.e. High, Medium, and low concentrations. The RBC system proved to be efficient in BOD removal and it was between 93% - 96% and TSS removal were between 84% - 95% of all concentrations of Influent grey water. Phytotreatment of grey water was also done by the use of oleaginous plants like rapeseed, soybean, and sunflower. The Phytotreatment tests were carried out in 20 L pots in a greenhouse and it presents high removal efficiency of Nitrogen ( N > 80%), Phosphorus (P >90%), COD about 90 %. Biomass production along with grey water treatment was the main finding of this study. The treated grey water can be used for disinfection and Sand Filtration. Efficient Treatment of greywater can comply with water shortage in future