Over the past years, due to rapid industrialization and advanced agricultural activities environmental deterioration is becoming a major concern. Water is one of the most important and basic natural resource which is being used in industries, agricultural activities as well as for the domestic and commercial purpose. These activities leads to discharge of wastewater, hence, accurate analysis of wastewater is crucial for maintaining the health and safety of the people. Water from all three sectors i.e. domestic, industrial and agriculture contribute into wastewater loads in the Najafgarh Drain in south-west Delhi. For this purpose the south-west Delhi stretch, near Dwarka, of the Najafgarh Drain was chosen to be analyzed for its wastewater quality parameters.