Order of the National Green Tribunal (Southern Zone, Chennai) in the matter of Edayar Resident’s Association Vs Government of India & Others dated 31/03/2017 regarding pollution caused to Karamana River, Thiruvananthapuram, Kerala. The Court noted that River Karamana originates from Agastyar- Koodam of Western Ghats and join the Arabian Sea after flowing 68 km. Though the scope of the application as it now stands is limited to the area of the river within the City Corporation of Thiruvananthapuram, if the river is to be cleaned and kept cleaned, the entire length of the river has to be cleaned and kept cleaned.

NGT directs the Kerala State Pollution Control Board (KSPCB) to make a lay out of the Karamana River and demarcate the places where domestic sewage/ industrial effluent are being discharged into the River without treatment, causing pollution.