(B) Power of Chairman of Central Pollution Control Board (CPCB). It is stated, "The Chairman shall have overall control over the day to day activities of the State Pollution Control Boards".
The Chairman of CPCB wrote in April 1999 to all State Pollution Control Board (Annexure-1) and requested to test PHED groundwater of all the water supplied to public for potable purpose.
During last one year we tested 245 hand tubewells of PHED, Government of West Bengal from North 24-Pargnas above 100 meters from where people are drinking water and 28% have arsenic above 10 µg/l the WHO guideline value and 12% above 50 µg/l WHO maximum permissible limit. In October 2000 arsenic is found in deep tubewells in hospitals, Zoo, National library above WHO guideline value (Figure-1).