Water Quality Index for Municipal Water Supply of Attock City, Punjab, Pakistan

Abstract

Water Quality Index has been calculated in this paper for the municipal water of Attock city. This calculation was carried out using recent water quality data collected from thirty sampling station. For the calculation of water quality index, six parameters were taken in account pH, Total Dissolve Solids, Dissolved Oxygen, Electrical Conductivity, Nitrates and Sulphate. The calculated values of WQI for thirty sampling stations range from 109.2 to 142.1. The average value is found to be 127.56. The value of water quality index exceeds 100, the upper limit for drinking water at all sampling stations. It was due to high Total Dissolve Solids, Dissolved Oxygen and Nitrates in municipal water. The present study reveals that the municipal water of Attock City needs some treatment in order to get fit for the human consumption and also to avoid some health hazardous also.