Order of the National Green Tribunal in the matter of Paryavaran Suraksha Samiti & Others Vs Union of India & Others dated 19/02/2019 regarding establishment and functioning of ETPs/CETPs/STPs. Vide order dated 03.08.2018, the matter was reviewed and it was noted that in absence of functional ETPs/CETPs/STPs, untreated effluents are discharged in water bodies leading to contamination of water. The Tribunal had directed the CPCB to prepare an action plan. Direction was also given for monitoring by a Committee of two officers – one each representing MoEF&CC and CPCB at least once in every month.

A report submitted before NGT mentions that "as per the data received from 25 SPCBs/PCCs, out of total 44838 number of industries requiring ETPs, 44100 industries are operating with functional ETPs and 439 industries are operating without ETPs". Also states like Delhi, Assam, Haryana, Jharkhand, Lakshadweep, Manipur, Uttar Pradesh & Uttarakhand have not furnished the relevant data to the CPCB. National Green Tribunal directs the Chief Secretaries to look into the matter and inform the Court on the progress of the subject.