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Elevated levels of mercury
April 21 , 2025
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- The Tamil Nadu Pollution Control Board (TNPCB) on the directions of the National Green Tribunal (NGT), Southern Zone, conducted a study recently.
- The result has shown the elevated levels of mercury in waterbodies located near Mines I, 1 A and II and Thermal Power Station II of NLC India Limited (NLCIL).
- The concentration of total mercury was found to be above the permissible limits of drinking water standards in the range of 0.0012 mg/l to 0.115 mg/l in 15 out of 17 surface water samples.
- In Buckingham canal, one of the sites where water samples were collected, the concentration of mercury was found to be 115 times more than the permissible limit.
- Similarly, in the groundwater samples, the presence of mercury was found to be in the range of 0.0025 mg/l to 0.0626 mg/l, an increase of 2.5 to 62 times than the permissible limits.
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