Drinking water quality in the city of Karachi

The supply of water in the metropolitan city of Karachi (of Population about 14 million) is the responsibility of Karachi Water & Sewerage Board (KWSB). At present, Karachi gets near 380 MOD Water from mainly two sources namely Indus (280 MGD) and Hub reservoir (100 MOD). Four Treatment plants known as Gharo Filter Plant, Pipri Filter plant, North East Karachi (N.E.K) filter plant and COD filter plant for Indus raw Water and one treatment plant in Hub Filter Plant for Hub raw Water are located in the different parts of the city to treat the raw water. The treated water is distributed to the city via main distribution lines and passed on to the consumers through the branched lines, travelling a distance of about 3000 km of pipe lines (Fahim, 1998). The main objective of this study is to assess the fate of the quality of the water as it transports from the treatment plant to the consumer sites.