Water quality index (WQI) is a dimensionless number that combines multiple water quality factors into a single number by normalizing values to subjective rating curves. The present work is aimed at assessing the Water Quality Index (W.Q.I) of surface water of Bhilai Steel Plant industrial area. Physicochemical parameters were monitored for the calculation of W.Q.I for the summer seasons 2011. The physicochemical parameters namely pH, Total hardness, TDS, Calcium, Chloride, Sulphate, Phosphate, Sodium, Potassium, EC and DO was determined and it is found that their values were within the permissible limits on the other hand total alkalinities and magnesium values were exceeding the permissible limits as prescribed by Indian Standards. The analysis reveals that the surface water of the area needs some treatment before consumption, and it also needs to be protected from the perils of contamination.