A CASE STUDY ON GROUNDWATER QUALITY OF WESTERNDARRANG DISTRICT, ASSAM WITH SPECIAL REFERENCE TOSOME PARAMETERS AND MAPPING USING GEOSPECIALTECHNIQUEK. K. BORAH, P. K. SARMA, B. BHUYAN AND H.P. SARMAAbstract A study has been carried out on groundwater contamination with respect to some physicochemical parameters in Darrang district (western part), Assam, India. Iron is estimated by UV spectrophotometer using 1,10 phenonthroline monohydrate. Arsenic in groundwater are estimated by using Atomic Absorption Spectrometer, Perkin Elmer AA 200. Other parameters are estimated as per Standard Method of APHA (American Public Health Association). Univariate statistics along with skewness, kurtosis and t test have been employed to test the distribution normality for each parameters. The study reveals that the groundwater of the area is highly contaminated with Arsenic and Iron. Keeping in view of the high concentrations of Arsenic, it is suggested to test the portability of groundwater of the area before using it for drinking. The ground water quality map for the study area was prepared by using Geospecial technique, Garmine CHX 60 which will be helpful to show the variation of ground water parameters in the study area.
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