Order of the National Green Tribunal in the matter of M.C. Mehta Vs. Union of India & Ors. dated 18/10/2016 regarding Ganga river pollution. The Uttar Pradesh State Government, Uttar Pradesh Jal Nigam, Uttar Pradesh Pollution Control Board and Central Pollution Control Board are directed to file a comprehensive map sketch mentioning all the drains and the rivers joining the river Ganga or its main tributaries in Segment – B which now will be from Haridwar City Border to Unnao in District Kanpur.