Grey water is defined as the urban wastewater that includes water from baths, showers, hand basins, washing machines, dishwashers and kitchen sinks, but excludes streams from toilets. Some authors exclude kitchenwastewater from the other grey water streams. Grey water constitutes 50–80% of the total household wastewater. Due to the low levels of contaminating pathogens and nitrogen, reuse and recycle of grey water is receiving more and more attention. Numerous studies have been conducted on the treatment of grey water with different technologies which vary in both complexity and performance. However, specific guidelines for grey water reuse are not available or not sufficient and studies on the evaluation of the appropriate technologies for grey water reuse/
recycle are scarce. In this study, the treatment alternatives for grey water reuse are examined by reviewing the published literatures and an evaluation and selection procedure of the appropriate techniques for grey water treatments and reuse is proposed.