Section 21(3)(e) in The Water (Prevention And Control Of Pollution) Act, 1974
(e)on the request of the occupier or his agent, send the second container,—(i)in a case where such sample is taken from any area situated in a Union territory, to the laboratory established or specified under sub-section (1) of section 51; and(ii)in any other case, to the laboratory established or specified under sub-section (1) of section 52.