Heavy metal contamination of drinking water nearby Hadiara Drain

The present study was conducted in the surrounding areas of hadiara drain,a major drain flushing out in river ravi. various physical and chemical parameters were analyzed in the drinking water randomly collected from five areas located around hadiara drain including raja bolay village (rbv),ghanakar village (gv),deu khurd (dk),kahna nau (kn),and green cap housing society (gchs). the results were compared with standard value of world health organization for drinking water. it was observed that,the pollutants emanating from local tannery and textile effluents discharged into hadiara drain increases the value of electrical conductivity and dissolved oxygen in water which is above the who standard value. among the heavy metals tested cr was higher than the recommended values in all areas studied except in rbv and gchs. the study concluded that the use of polluted water degraded the ground water quality. copyright 2014 zoological society of pakistan.