Hydrogeochemical assessment of groundwater quality and associated potential human health risk in Bhadohi environs, India

摘要

The current study intended to assess the hydrogeochemical processes and groundwater quality along with the identification of associated health risk by consuming the groundwater in the local population by collecting 70 groundwater samples for premonsoon and postmonsoon in the year 2015. Gibbs plot nominated that majority of the sample of Bhadohi is from rock dominance. The Ca/Mg ratio signifies that carbonate dissolution is the principal reason for Ca in the Bhadohi environs. Relatively high Na/Cl ( 1), K/Cl ( 0.02) and SO4/Cl ( 0.09) ratios are accredited to the influence of textile effluents on the groundwater. 45% sample in postmonsoon and 40% samples in premonsoon demonstrate high NO3 values which is exceeding the WHO standard for human drinking. Chronic daily intake (CDI) value demonstrates that the residents of the study region are at risk of nitrate contamination originated health hazards. About 48.5% of groundwater samples show a high concentration of iron. The HPI profile shows that 32% of the sample has high HPI values, 17% of the sample has a medium range of HPI, and 51% of the sample has a low value of HPI. Target health quotient values of trace metals in groundwater were in the order of Pb Mn Cr Cd Cu Fe Zn Ni. The groundwater of the investigative area is fine for irrigation.