During the last 3 years from 2019-2021, Central Pollution Control Board (CPCB) has carried out inspection of 271 industries, out of which 104 units were found non-complying with prescribed environmental norms according to information given by the Minister of State in the Ministry of Environment, Forest and Climate Change in Lok Sabha. 

All these companies to whom show cause notices and closure directions were issued under the provisions of Environment (Protection) Act, 1986. . 

Emission and discharge from industrial units are one of the many sources of pollution. All industries, including highly polluting industries like chlor alkali, pesticide, pharmaceutical, petrochemical, dye & dye intermediate, fertilizer, oil refinery, inorganic chemicals and organic chemicals have provided pollution control systems for effluent as well as emission to comply with the notified standards. 

The compliance status of effluent and emission standards is being monitored by Online Continuous Effluent/ Emission Monitoring System (OCEMS) by CPCB/SPCBs/PCCs.