TNPCB directs Highly Polluting Industries to switchover to the New OCEMS Portal by 15.12.2025

The Tamil Nadu Pollution Control Board (“TNPCB”) has directed all 17 category industries (please refer to the document titled “OCEMS_17 Highly Polluting Industries”) in Tamil Nadu who are registered on CPCB’s old OCEMS (Online Continuous Effluent Emission Monitoring Systems) portal to switch over to TNPCB’s new OCEMS portal and transmit OCEMS Data (“Data”) by 15th December 2025. The data to CPCB’s new OCEMS Portal & TNPCB’s new OCEMS portal is to be pushed through CPCB API & TNPCB API respectively.

Please note that while the notification is dated 10th November 2025, it has been recently made available in Tamil Nadu Pollution Control Board’s website.

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Source: TNPCB