law: Water (Prevention and Control of Pollution) Act, 1974
  51. Central Water Laboratory.
  
  (1) The Central Government may, by
  
  notification in the Official Gazette, -
  (a) establish a
  
  Central Water Laboratory; or
  (b) specify any
  
  laboratory or institute as a Central Water Laboratory, to carry out the
  
  functions entrusted to the Central Water Laboratory under this Act.
  (2) The Central Government may, after
  
  consultation with the Central Board, make rules prescribing -
  (a) the functions of
  
  the Central Water Laboratory;
  (b) the procedure for
  
  the submission to the said laboratory of samples of water or of sewage or trade
  
  effluent for analysis or tests, the form of the laboratory's report thereon and
  
  the fees payable in respect of such report;
  (c) such other matters as may be necessary expedient to enable that laboratory
  
  to carry out its functioning.