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High levels of uranium in groundwater of eastern Karnataka’s 57 villages: Study

-Down to Earth

Uranium concentration in groundwater exceeded 30 μg/l, more than the WHO-prescribed limit, in 57 out of 73 villages 

A chemical analysis of groundwater in 73 villages of Karnataka has found high levels of uranium concentration in groundwater of at least 57 villages.

The uranium concentration in these villages was at least 30 micrograms per litre (μg / l). In 48 of these villages, the levels exceeded 60 μg / l.

In 78 per cent and 66 per cent of the villages studied, therefore, uranium concentration exceeded permissible limits given by the World Health Organization (30 μg / l) and Atomic Energy Regulatory Board (60 μg /l) respectively.

In one village each in Tumkur and Chitradurga districts, five in Kolar and seven in Chikkaballapura districts, uranium concentration was found to be in thousands of micrograms per liter, according to the study published in Current Science.

Uranium in drinking water raises concerns because of its chemical toxicity. Uranium (U) has no known essential biological functions. Chronic exposure to low-level U isotopes (radionuclides) may be interlinked with cancer etiology and at high exposure levels, also kidney disease.

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