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Nullah Aik and Nullah Palkhu are important water resources in Sialkot and receive industrial effluents, municipal sewage that degrade the water quality and disrupt the ecological integrity. During present study, water and fish samples were collected at 18 sampling sites on seasonal basis from 2004 to 2006. Water samples were analyzed for 38 parameters. Cluster Analysis identified three different classes relatively unimpaired, impaired and less impaired regions on the basis of variations in water quality. COD, TDS, Fe, Pb, Cd, Cr and Ni were found to be higher than the permissible limits...