The delegation headed by Delhi BJP chief Satish Upadhyay submitted a memorandum to Jung which mentions contents of a letter Delhi Water Resource Minister Kapil Mishra wrote to Chief Minister Arvind Kejriwal on August 28 last.
The memorandum says that in the letter Mishra expressed "fears" of "losing (his) job" and even "possibility" of "destabilising government" if action is taken against those involved in the alleged scam.
The memorandum says that it "surprising" that no action has been ordered by the Chief Minister against the accused even after nine months.
"It seems either the present government is under a mala fide deal with the former Chief Minister Sheila Dikshit or Kejriwal finds a threat to his government if he acts in the matter of the tanker scam as indicated by minister Mishra in his letter," it said.
Leader of Opposition in Delhi Assembly Vijender Gupta who was also in the delegation alleged that for the past 15 years the DJB has been a "corruption den" where "over 75 percent" development funds are "looted".