Grey water is a waste water derived from kitchens, bathrooms (i.e., discharges from shower, hand basin, bath), and laundry water. Grey water does not include the waste water produced from toilet use, which is considered black water. The generated quantity of grey water can greatly vary between different households within one community and depends on different factors, such as availability of water and lifestyle of households. In general, the volume of grey water accounts between 50 per cent and 80 per cent of the domestic household water uses. The quality of grey water is highly variable due to the variability in household water use. Grey water contains the same contaminants (organic compounds, nutrients and pathogens) as raw sewage water. However, grey water contains low concentrations of contaminants compared to those in raw sewage water and black water. The potential risks, as there is some concern that the high levels of organic load produced in kitchens might pose an unacceptable risk of pathogenic contamination in gray water. Reuse of grey water systems as an opportunity to conserve potable quality water, generate locally sustainable water sources, and match. the water supply quality with that required for the intended use. Grey water or sullage is defined as all wastewater streams generated from households or office buildings except for the wastewater from toilets. Sources of grey water include for example sinks, showers, baths, clothes washing machines or dish washers. As grey water contains many fewer pathogens than domestic wastewater, it is easier to treat and to recycle onsite for uses such as toilet flushing, landscape irrigation or even irrigation of crops. Application of grey water reuse in urban water system provides a substantial benefit for both water supply and wastewater subsystems by reducing the need for clean water in water distribution system as well as generated wastewater in sewer system There is a high amount of variability in the chemical and physical quality of grey water produced by any household, due to factors such as source of water the water use efficiency of appliances and fixtures, individual habits, product used (eg. Detergents, shampoos, soaps etc) and other site-specific characteristics. The amount of salt (sodium, magnesium, potassium and other salts), oils, greases, fats, nutrients and chemicals in grey water can largely be managed by the types of product used within a household. Most cleaning agents contain sodium salts, which can cause excessive soil alkalinity, inhibit seed germination, and destroy the structure of soils by dispersing clay. Cleaning products containing ammonia are safe to use, as plants can use it to obtain nitrogen.