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Law Update
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On 01 October 2025 and 09 October 2025, CPCB issued drafts regarding clear directions for all air-polluting industries operating in NCR-Delhi. These directions mandate installation and connectivity of only verified Online Continuous Emission Monitoring Systems (OCEMS).
The national verification agency, CSIR-NPL (Council of Scientific & Industrial Research β National Physical Laboratory), now runs an OCEMS certification scheme. To date, 21 OCEMS models have received CSIR-NPL verification. Only these certified models are permitted to connect to the CPCB server.
Industries must install these certified OCEMS units before any connectivity approval. Regulatory authorities must ensure compliance for every listed industry in their jurisdiction. A list of certified models appears on the CPCB website and requires periodic checking since the list will update over time.
Use of non-certified OCEMS is strictly prohibited. The move aims to standardize emission monitoring and secure reliable, real-time air quality data across NCR-Delhi. Immediate action by authorities will help enforce regulatory compliance and support cleaner air monitoring across all relevant industries.
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