2005: High Level Committee: Appointed by Delhi High Court to monitor clean-up and remove encroachments, as directed by Supreme Court (SC) in March 2003

2004: High Powered Committee (HPC): aka Baijal Committee. Appointed by SC to prepare an action plan for Yamuna

2000: Environment Pollution (Prevention and Control) Authority (EPCA) for NCR: Asked by SC to monitor CETPs

1999: HPC created on SC order by the National River Conservation Authority for minimum flow in the Yamuna

1994: Chaired by Secretary (Environment), Ministry of Environment and Forests submitted a Comprehensive Action Plan on Environment and Pollution Control in Delhi, covering all major aspects including water pollution pertaining to NCT Delhi.