What Happened
- The Commission for Air Quality Management in NCR and Adjoining Areas (CAQM) issued Statutory Direction No. 98 on February 21, 2026, mandating a uniform particulate matter (PM) emission standard of 50 mg/Nm³ for identified industries across Delhi-NCR.
- The new standard applies to 17 categories of highly polluting industries (CPCB-identified), Red Category industries (medium and large), food and food processing units, textile industries with boilers or thermic fluid heaters, and metal industries operating furnaces.
- Implementation timeline: Large and medium industries must comply by August 1, 2026; remaining industries by October 1, 2026.
- The direction was based on recommendations by the Central Pollution Control Board (CPCB), informed by studies from IIT Kanpur and a CPCB-constituted Technical Committee.
- State governments of Haryana, Uttar Pradesh, Rajasthan, and GNCTD (along with their respective pollution control boards) have been directed to enforce compliance.
Static Topic Bridges
Commission for Air Quality Management in NCR and Adjoining Areas (CAQM)
CAQM is a statutory body established under the Commission for Air Quality Management in National Capital Region and Adjoining Areas Act, 2021 (Act 29 of 2021), which came into force on April 13, 2021. It replaced the earlier Environment Pollution (Prevention and Control) Authority (EPCA) — a Supreme Court-constituted body — with a legislatively mandated permanent commission. CAQM has wider jurisdiction and greater statutory powers than its predecessor, including the power to issue binding directions and impose penalties.
- Statutory basis: CAQM Act, 2021 (Parliament enacted); not created by executive order — stronger legal footing than EPCA (which was Supreme Court-created)
- Jurisdiction: NCR + adjoining areas in Haryana, Punjab, Rajasthan, and Uttar Pradesh where pollution sources impact Delhi-NCR air quality
- Composition: Chairperson (full-time, serving/retired IAS of Joint Secretary rank or above); representatives from central ministries, state governments, CPCB, and experts in relevant fields; total up to 20 members
- Powers: Issue binding directions (Section 12); inspect, investigate, regulate; override state pollution control boards in case of conflict; impose penalties of up to Rs 1 crore and imprisonment up to 5 years for violations
- CAQM supersedes powers of CPCB, SPCBs, and state governments in its jurisdiction — a significant centralisation of air quality governance
- CAQM Act superiority clause: Provisions of CAQM Act shall have effect notwithstanding anything inconsistent in the Air Act 1981, Water Act 1974, or Environment Protection Act 1986
Connection to this news: Statutory Direction No. 98 is issued under CAQM's binding direction powers (Section 12 of the CAQM Act, 2021), making compliance mandatory for all covered industries — enforceable through state pollution control boards.
Air (Prevention and Control of Pollution) Act, 1981 and National Ambient Air Quality Standards (NAAQS)
The Air Act, 1981 is the primary Indian legislation for air pollution control. Enacted under Article 253 of the Constitution (Parliament's power to implement international treaties), it was triggered by India's obligations under the Stockholm Conference on Human Environment (1972). The Act establishes the Central Pollution Control Board (CPCB) and State Pollution Control Boards (SPCBs), and empowers them to set emission standards. NAAQS (National Ambient Air Quality Standards) — prescribed by CPCB — define the maximum permissible concentration of pollutants in ambient air.
- Air Act enacted: 1981; based on Stockholm Conference, 1972 obligations; enacted under Article 253 (treaties) read with Entry 13, List I (Seventh Schedule) [Unverified — verify exact constitutional entry]
- CPCB established: 1974 (Water Act, 1974); functions extended to air quality under Air Act, 1981
- NAAQS revised: Most recently in 2009 and 2019 (covering 12 pollutants)
- PM10 NAAQS: Annual average permissible limit = 60 µg/m³; 24-hour average = 100 µg/m³
- PM2.5 NAAQS: Annual average = 40 µg/m³; 24-hour average = 60 µg/m³
- Stack emission standard (new CAQM direction): 50 mg/Nm³ PM — this is an industrial stack emission norm (not ambient air quality standard); it governs the concentration of particulate matter in gas emitted from industrial chimneys/stacks
- Red Category industries: CPCB classification of most polluting industries based on Pollution Index (PI) ≥ 60; subject to most stringent environmental scrutiny
Connection to this news: The CAQM's new 50 mg/Nm³ stack PM emission norm tightens industrial source standards, addressing a key gap where different industries in NCR had widely varying emission limits; standardisation aids enforcement and reduces ambient PM loading.
Graded Response Action Plan (GRAP) and Delhi's Air Quality Governance Architecture
Delhi-NCR's air quality crisis is managed through a layered institutional and regulatory architecture. The Graded Response Action Plan (GRAP) is an emergency-response protocol that activates progressively stricter measures based on Air Quality Index (AQI) levels. GRAP was notified in 2017 by the Ministry of Environment, Forest and Climate Change (MoEFCC) and has been progressively strengthened — CAQM took over GRAP implementation in 2021.
- GRAP stages: Stage I (Poor, AQI 201–300) → Stage II (Very Poor, AQI 301–400) → Stage III (Severe, AQI 401–450) → Stage IV (Severe+, AQI >450)
- Industrial emissions: One of the major contributors to Delhi's PM2.5, alongside transport (vehicles), dust (road, construction), and transboundary biomass burning (stubble burning)
- IIT Kanpur Source Apportionment Study: Established that industrial emissions, vehicles, and biomass burning together account for ~70% of PM2.5 in Delhi winters
- National Clean Air Programme (NCAP): Launched 2019 by MoEFCC; target — 20–30% reduction in PM2.5 and PM10 by 2024 (base year 2017); later revised to 40% reduction by 2026
- Environment (Protection) Act, 1986 (EPA): Umbrella legislation under which many emission standards are notified; Section 6 empowers Central Government to set standards for emission
Connection to this news: CAQM's new uniform PM stack norm complements the GRAP and NCAP frameworks by addressing chronic industrial pollution — the persistent background contributor to NCR's air quality problem that GRAP's emergency measures cannot address alone.
Key Facts & Data
- CAQM Statutory Direction No. 98: Issued February 21, 2026
- New PM emission standard: 50 mg/Nm³ (uniform, for all covered industries in Delhi-NCR)
- Implementation deadlines: Large/medium industries — August 1, 2026; remaining — October 1, 2026
- Industries covered: 17 CPCB-identified highly polluting categories + Red Category (medium/large) + food processing + textile (with boilers) + metal furnace industries
- CAQM established: April 13, 2021 (CAQM Act, 2021 — Act 29 of 2021)
- CAQM replaced: EPCA (Environment Pollution Prevention and Control Authority — Supreme Court-constituted)
- CAQM penalty power: Up to Rs 1 crore fine + up to 5 years imprisonment for violations
- NAAQS PM10 annual standard: 60 µg/m³; PM2.5 annual standard: 40 µg/m³ (ambient air)
- NCAP target: 40% reduction in PM2.5 and PM10 by 2026 (base year 2017)
- States required to enforce: Haryana, Uttar Pradesh, Rajasthan + GNCTD (with respective pollution control boards)