to the best of my knowledge, industrial waste water is not analyzed to identify species in it. i had checked with few friends. they could not help for the same reason.
it may be easier for you to take an untreated waste water sample from refineries, petrochemicals near to mumbai and use it for your purpose.
the presence of carbazole and acradine may be related to particular process, feedstock processed.
you may ascertain the possibility of these two chemicals being present before approaching the refinery or petrochemical complex.
iit mumbai has good relations with reliance group. it should be possible for you to get samples from them. since theirs are the complex facilities, it is likeli that these may be present in their waste water.