Judgement of the National Green Tribunal in the matter of Mr. R.V. Baktavachalam & Others Vs The Secretary to Government, Municipal Administration and Water Supply (TP.2) Department, Chennai & Others dated 29/03/2016 regarding letting out sewerage water into Karunakarachery Panchayat, Soranjeri Panchayat, Thirumanam Panchayat, Kannapalayam Panchayat, Annambedu Panchayat, Situkadu Panchayat and Anaikattucherry Panchayat’s Cooum River as well as in the upstream portion of Cooum River from its origin in Cooum Village in Tiruvallur District.