RADIOACTIVE

As per the latest investigation conducted by the Central Ground Water Board (CGWB), groundwater in Bengaluru’s urban and rural areas is partly affected by the heavy metal uranium with a concentration of more than 30 µg/L (micrograms/litre).

The occurrence of uranium in groundwater beyond the permissible limit has also been observed in Ballari, Kalaburagi, Kolar, Mandya, Raichur and Tumkur districts in Karnataka.

For the study, 737 water samples from groundwater monitoring stations across the state were collected. The results showed the concentration of uranium ranging from 0.0 to 201.01 µg/L with an average concentration of 4.22 µg/L. The maximum value of uranium observed was 201.1 µg/L.

Out of the 737 wells, 14 wells (2%) exceeded the WHO permissible limit of 30 µg/L, which were from the districts of Bengaluru Urban, Bengaluru Rural, Kalaburagi, Mandya, Raichur, Tumkur, Ballari and Kolar. The highest value of 201.01 µg/L was recorded at Chintamani, Chintamani tehsil of […]

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