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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. Grey water constitutes 50–80% of the total household waste water. Due to the low levels of contaminating pathogens and nitrogen, reuse and recycle of grey water is receiving more and more attention. Based on literature review, a non-potable urban grey water reuse standard is proposed and the treatment alternatives and reuse scheme for grey water reuses are evaluated according to grey water characteristics and the proposed standard. In this research paper the grey water was collected from a housing colony having population approximately 2000 in Roorkee city of India. This grey water is having COD 300 mg/L and total solid content is 750 mg/L. This water is contaminated having MPN value 1600/100 ml but very less turbidity (75 NTU). Grey water is very less contaminated hence research was carried out for reuse of this water for gardening purpose. To remove microbial contamination the chlorination was done and MPN value was reduced by 95%. For removal of COD and turbidity various alum doses was tried and at optimum dose the COD and turbidity remove was 60% and 70% respectively. This water is now used for gardening purpose in common garden of colony.