Environmental laws & institutions (India)

The constitutional foundation

India's environmental governance rests on a constitutional scaffold inserted largely by the 42nd Amendment Act, 1976. Article 48A (Directive Principle) directs the State to "protect and improve the environment and to safeguard the forests and wild life of the country." Article 51A(g) (Fundamental Duty) obliges every citizen "to protect and improve the natural environment including forests, lakes, rivers and wild life." Though both are non-justiciable, the Supreme Court has read environmental protection into the justiciable Article 21 (right to life) in Subhash Kumar v. State of Bihar (1991) and M.C. Mehta v. Union of India (the Oleum Gas Leak and Ganga Pollution lines of cases), establishing the right to a healthy environment as enforceable.

The 42nd Amendment also moved "Forests" (Entry 17A) and "Protection of wild animals and birds" (Entry 17B) from the State List to the Concurrent List, enabling central legislation.

The core statutes in chronological sequence

Retain this dated sequence for Prelims:

• Wildlife (Protection) Act, 1972 — creates protected areas (national parks, sanctuaries, conservation and community reserves), six schedules of species protection, and the National Board for Wildlife chaired by the Prime Minister. The 2022 Amendment rationalised schedules to four and aligned the Act with CITES.
• Water (Prevention and Control of Pollution) Act, 1974 — established the Central Pollution Control Board (CPCB) and State Pollution Control Boards (SPCBs); enacted under Article 252 with State consent.
• Forest (Conservation) Act, 1980 — requires prior Central Government approval to divert forest land for non-forest use; the basis of compensatory afforestation. Amended and renamed Van (Sanrakshan Evam Samvardhan) Adhiniyam by the 2023 Amendment.
• Air (Prevention and Control of Pollution) Act, 1981 — extended the CPCB/SPCB mandate to air quality.
• Environment (Protection) Act, 1986 (EPA) — the umbrella legislation passed after the Bhopal Gas Tragedy (December 1984) under Article 253 (legislation to implement the 1972 Stockholm Conference). It empowers the Centre to set standards, regulate hazardous substances, and issue the EIA Notification, 2006, Coastal Regulation Zone Notification, and rules on plastic, e-waste, and hazardous waste.
• Biological Diversity Act, 2002 — implements the Convention on Biological Diversity (1992); creates the National Biodiversity Authority (NBA), State Biodiversity Boards, and Biodiversity Management Committees; governs access and benefit-sharing.

Judicial doctrines

The Court has imported global principles into domestic law: the Polluter Pays and Precautionary principles and Sustainable Development in Vellore Citizens' Welfare Forum v. Union of India (1996); Absolute Liability in M.C. Mehta v. Union of India (1987), a stricter rule than the English Rylands v. Fletcher strict liability; and the Public Trust Doctrine in M.C. Mehta v. Kamal Nath (1997). These doctrines are repeatedly tested as standalone Prelims options and as Mains answer anchors.

Regulatory and adjudicatory institutions

A candidate must distinguish the statutory, constitutional, and executive character of each body:

• CPCB and SPCBs — statutory bodies under the Water Act, 1974, monitoring and enforcing standards; the CPCB runs the National Air Quality Index (launched 2015).
• National Green Tribunal (NGT) — created by the National Green Tribunal Act, 2010, a specialised judicial body for "substantial questions relating to environment," with principal bench at New Delhi and benches at Bhopal, Pune, Kolkata and Chennai. It can award compensation, applies the precautionary and polluter-pays principles statutorily (Section 20), and disposes of cases within six months. Appeals lie to the Supreme Court under Section 22.
• National Biodiversity Authority (NBA) — Chennai-based statutory body under the 2002 Act.
• CAMPA — the Compensatory Afforestation Fund Management and Planning Authority, given statutory backing by the Compensatory Afforestation Fund Act, 2016, channelling funds collected against forest diversion.
• MoEFCC — the nodal executive ministry; its Expert Appraisal Committees (EACs) grant environmental clearance under the EIA regime.
• Wildlife Crime Control Bureau (2007) and the National Tiger Conservation Authority (NTCA, statutory since the 2006 amendment to the WLPA, running Project Tiger from 1973).

Why this matters for the exam

Prelims (GS Paper I): This is among the highest-frequency areas in Environment. The UMPSC examiner repeatedly tests (a) the parent statute behind each institution—e.g. "The CPCB derives its authority from which Act?" (Water Act, 1974, not the EPA); (b) chronology—the 1972/1974/1980/1981/1986/2002 ladder; (c) the constitutional articles 48A, 51A(g), 21, 252, 253; and (d) which body is statutory vs. constitutional vs. non-statutory. PYQs (e.g. 2017 on biosphere reserves, 2019 on the Biodiversity Act, 2021 on EIA) reward precise statute-to-function mapping. A frequent trap: attributing the EIA Notification to a separate Act when it is a subordinate notification under Section 3 of the EPA, 1986.

Mains (GS Paper III): The syllabus line "Conservation, environmental pollution and degradation, environmental impact assessment" is answered through these laws. High-scoring answers (i) cite the statute and section, (ii) name the doctrine and the case that introduced it, (iii) evaluate institutional weakness—e.g. SPCB underfunding, EAC clearance delays, NGT vacancies, the EIA Draft Notification 2020 controversy over post-facto clearance—and (iv) propose reform. The examiner rewards a balanced critique: India has a dense statutory framework but a documented enforcement deficit, evidenced by the CAG's audits of CPCB and recurrent NGT strictures.

Retain a one-line value statement per institution; it converts directly into marks in both papers.