ESTIMATION OF DRINKING WATER QUALITY PARAMETERS IN DIFFERENT WATER SOURCES OF NORTH LAKHIMPUR TOWN, ASSAM, INDIAMOROMI GOHAIN, MRIDUL BURAGOHAIN AND DURLOV SAIKIAAbstract Water is supreme crucial part of human and animal life. Contaminated water is biggest problem in the world. In this study 42 numbers of drinking water samples were collected from 14 wards of North Lakhimpur town and have been analyzed for some drinking water quality parameters like pH, fluoride (F-). iron (Fe), arsenic (As), lead (Pb) and mercury (Hg). The result showed that pH, FFe, As, Pb and Hg ranged from 6.4 to 7.5, 0.02 to 0.64 mg/l, 0.033 to 1.17 mg/l, BDL to 0.0018 mg/l, 0.015 to 0.146 mg/l, and 0.0001 to 0.00559 mg/l respectively. All the measured parameters were within the standard drinking water quality values of WHO except Fe and Hg content. The concentration of Fe was found higher than the standard limit value of WHO (0.3 mg/l) in 33.33% of the analysed sampling stations and the concentration of Hg was found higher than the standard limit value of WHO (0.001 mg/l) in 21.43% of the analysed sampling stations. In general the present investigation found that the maximum parameters were not at a level of pollution. |