law: Water (Prevention and Control of Pollution) Act, 1974
  32. Emergency Measures In Case of Pollution of Stream or Well.
  
  (1) Where it appears to the State Board that
  
  any poisonous, noxious or polluting matter is present in any stream or well or
  
  on land by reason of the discharge of such matter in such stream or well or on
  
  such land or has entered into that stream or well due to any accident or other
  
  unforeseen act or event, and if the Board is of opinion that it is necessary or
  
  expedient to take immediate action, it may for reasons to be recorded in
  
  writing, carry out such operations as it may consider necessary for all or any
  
  of the following purposes, that is to say, -
  (a) removing that
  
  matter from the stream or well or land and disposing it of in such manner as
  
  the Board considers appropriate;
  (b) remedying or
  
  mitigating any pollution caused by its presence in the stream or well;
  (c) issuing orders
  
  immediately restraining or prohibiting the person concerned from discharging
  
  any poisonous, noxious or polluting matter into the stream or well or on land
  
  or from making insanitary use of the stream or well.
  (2) The power conferred by sub-section (1)
  
  does not include the power to construct any works other than works of a
  
  temporary character which are removed on or before the completion of the
  
  operations.