Abstract
A study on the contamination of groundwater around Malir River Karachi was conducted. Samples were analyzed for their different chemical constituents. The mean concentration of all the major chemical constituents like calcium, magnesium, sodium, potassium, chloride and sulfate were found to be high in the analyzed groundwater samples. In the light of this study, groundwater samples of Malir River Karachi have been characterized as hard water. Nitrate contents were found to be higher than the permissible guidelines limits of WHO. No significant correlation has been found to exist between nitrate contents and other physicochemical parameters determined in this study. High levels of TDS may be attributed to percolation of industrial wastes.
