Water is the most vital resource for the living beings to survive. India has a vast and varied inland water resource which is considered to be richest in world's nature lakes. The physicochemical characteristic of Nellore tank has been studied for monsoon, pre-monsoon, postmonsoon in the year. From the results water body was found to be well in the permissible limit of BIS (1998, except pH, DO, BOD and turbidity in some seasons, which may be due to anthropogenic activities in the area, and input of nutrients and other organic and inorganic substances through runoff water from agricultural fields.
An investigation was undertaken to determine the effects of a large barite mining operation on local ground water quality near Mangampeta, Andhra Pradesh, India. Water samples were collected from drinking water wells in the mining and adjacent regions. The drinking water in the mining region had sulphate concentrations that ranged from 211 to 589 mg/L, compared to sulphate concentrations of 25 mg/L or less in the non-mined areas. The natural existence of barite and the widespread mine waste dumps at Mangampeta are believed to be responsible for the higher levels of sulphate in the ground water.
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