In view of the lockdown due to COVID-19 pandemic, all the industries are not operational and therefore, at present, there is no discharge (both domestic sewage and industrial effluent) from all the industries located in Delhi State.However, during the lockdown period, discharge of partially treated and untreated domestic wastewater continues to be in same proportion as in business as usual days. Shutting down of industrial activity will only result in reduction of 35.9 MLD of industrial effluent and still BOD load about 260 TPD is expected to be discharged through drains. In view of the lockdown due to COVID-19 pandemic, most of the industries located in Delhi are not in operation at present, total waste water discharge (both treated and untreated domestic sewage) from Delhi into river Yamuna is expected to be around 2990 MLD against estimated total wastewater discharge (both domestic and industrial wastewater) of 3026 MLD into river Yamuna during the pre-lockdown period (before 24.03.2020).