Assessment of Groundwater Quality for Drinking and Irrigation Purposes of Upper Bennihalla Basin, Karnataka

摘要

A total of 89 representative water samples were collected from borewells and dugwells. The samples were analysed to determine physico-chemical parameters like pH, total dissolved solids, hardness, SO_4~(2-), chloride, magnesium and calcium. Based on these analyses, the parameters like sodium adsorption ratio (SAR), sodium soluble percentage, residual sodium carbonate (RSC), permeability index and corrosive ratio have been also determined. The suitability of water from groundwater sources for drinking purposes was calculated by comparing the values of different water quality parameters with WHO and ISI guideline values for drinking water. The correlation of the analytical data has been attempted by plotting different graphical representations such as Wilcox and US Salinity Laboratory for the classification of water, and results show that most of the samples of Upper Bennihalla basin are fit for irrigation.