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M.C. Mehta v. Union of India

Writ Petition (Civil) · 2026 INSC 383Decided 12 Mar 2026
Writ Petition (Civil) No. 13029/1985
Justice Joymalya Bagchi · Justice Vipul M. Pancholi

Background

Filed in 1985, this is the third of the three oldest pending cases before the Supreme Court and originally targeted specific polluting industries around the National Capital Region (NCR). It grew, especially from the mid-1990s, into the Court's principal vehicle for tackling vehicular pollution in Delhi-NCR, driving landmark reforms such as Bharat Stage Emission Standards, cleaner public transport, vehicle age limits, relocation of polluting power plants, stubble-burning measures, and the creation of the statutory Commission for Air Quality Management (CAQM), which now runs the Graded Action Response Plan (GRAP). By 2026 the case had accumulated a large and unwieldy volume of interlocutory applications covering many unrelated sub-issues.

Decision Breakdown

Following the same restructuring approach used the day before in the two companion M.C. Mehta cases (W.P.(C) 13381/1984 and W.P.(C) 4677/1985), the Court formally disposed of this 1985 petition too. On the recommendation of the Amici Curiae (Ms. Aparajita Singh, Ms. Uttara Babbar, and Ms. Shibani Ghosh), it directed the Registry to register five new Suo Moto Writ Petitions, splitting NCR air-pollution oversight into distinct strands: (a) regulatory/policy framework and air quality governance, (b) vehicular emissions, (c) conservation and enhancement of green cover, (d) pollution from construction, power plants and industry, and (e) solid waste management and burning of crop residue/firecrackers. These five cases are to be listed together as a tagged batch with the policy-framework petition as the lead matter, and notice is to issue to the Union Environment Ministry, the NCR states, CAQM, and the Central/State Pollution Control Boards. The same infructuous-IA sorting procedure used in the companion judgments applies here, and all prior orders and directions remain binding and operative.

Lesson Learnt

Decades of judicially-driven environmental reform (like Delhi's clean-air measures) can be preserved and made more effective by reorganizing an old, overloaded single case into several clearly-scoped, ongoing proceedings, showing how the Supreme Court manages very long-running public interest litigation without letting it become procedurally unworkable.

Official source (sci.gov.in)View Judgment (PDF)

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