1. Introduction

Environmental degradation poses a serious threat to sustainable development and human survival. Recognizing this, India has developed a comprehensive environmental protection regime through constitutional mandates, legislative enactments, and judicial intervention. The Indian Constitution, though originally silent on environmental protection, was later amended to include explicit provisions, while legislative competence was distributed through the Seventh Schedule. The judiciary has played a crucial role in harmonizing these provisions to ensure environmental justice.

2. Constitutional Provisions Relating to Environmental Protection

2.1 Article 21 – Right to Life and Environment

The Supreme Court has consistently held that the right to life includes the right to live in a pollution-free environment.

Case Law:

• Subhash Kumar v. State of Bihar (1991):
  The Court held that the right to life includes the right to enjoy pollution-free water and air.

2.2 Directive Principles and Fundamental Duties

• Article 48A: Directs the State to protect and improve the environment and safeguard forests and wildlife.
• Article 51A(g): Imposes a fundamental duty on citizens to protect the natural environment.

Case Law:

• M.C. Mehta v. Union of India (1988):
  The Court emphasized that environmental protection is a constitutional obligation of both the State and citizens.

3. Environmental Protection under the Seventh Schedule

The Seventh Schedule of the Constitution distributes legislative powers between the Union and the States through three lists.

3.1 Union List (List I) – Relevant Environmental Entries

• Entry 52: Industries declared by Parliament to be of national importance (covers hazardous and polluting industries).
• Entry 53: Regulation of oilfields, mines, and mineral development.
• Entry 54: Regulation of mines and mineral development.
• Entry 56: Regulation and development of inter-State rivers and river valleys.
• Entry 97: Residuary powers (used to justify central environmental legislation like the Environment Protection Act, 1986).

Case Law:

• State of H.P. v. Umed Ram Sharma (1986):
  The Court upheld central control over natural resources affecting inter-State interests.

3.2 State List (List II) – Relevant Environmental Entries

• Entry 6: Public health and sanitation.
• Entry 14: Agriculture, protection of plants, prevention of pests.
• Entry 17: Water, water supplies, irrigation, canals, drainage.
• Entry 18: Land and land revenue.
• Entry 21: Fisheries.

These entries empower States to enact laws relating to water management, sanitation, and environmental health.

3.3 Concurrent List (List III) – Key Environmental Entries

• Entry 17A: Forests
• Entry 17B: Protection of wild animals and birds

These entries were added by the 42nd Constitutional Amendment Act, 1976, marking a significant shift in environmental governance by allowing both the Union and States to legislate on forests and wildlife.

Case Law:

• T.N. Godavarman Thirumulpad v. Union of India (1997):
  The Supreme Court held that forest conservation falls within Entry 17A and emphasized uniform national policy.

4. Important Environmental Legislations and Case Laws

4.1 Environment (Protection) Act, 1986

This umbrella legislation was enacted under Article 253 (implementation of international obligations).

Key Case Laws:

• M.C. Mehta v. Union of India (Oleum Gas Leak Case, 1987):
  Introduced the principle of Absolute Liability.
• A.P. Pollution Control Board v. Prof. M.V. Nayudu (1999):
  Emphasized the Precautionary Principle.

4.2 Water (Prevention and Control of Pollution) Act, 1974

Case Law:

• Vellore Citizens’ Welfare Forum v. Union of India (1996):
  Recognized the Polluter Pays Principle and Sustainable Development as part of Indian law.

4.3 Air (Prevention and Control of Pollution) Act, 1981

Case Law:

• M.C. Mehta v. Union of India (Vehicular Pollution Case):
  The Court ordered conversion to CNG to protect the right to clean air.

4.4 Forest (Conservation) Act, 1980

Case Law:

• T.N. Godavarman Thirumulpad v. Union of India:
  Introduced the concept of continuous mandamus for forest protection.

4.5 Wildlife (Protection) Act, 1972

Case Law:

• Centre for Environmental Law, WWF-India v. Union of India (2013):
  Restricted mining activities in protected areas.

5. Environmental Principles Evolved by Judiciary

The courts have adopted internationally accepted principles such as:

• Polluter Pays Principle – Indian Council for Enviro-Legal Action v. Union of India (1996)
• Precautionary Principle – Vellore Citizens’ Welfare Forum v. Union of India
• Sustainable Development – Narmada Bachao Andolan v. Union of India (2000)

6. Role of National Green Tribunal (NGT)

Established under the National Green Tribunal Act, 2010, the NGT applies environmental principles and ensures speedy disposal of cases.

Case Law:

• Almitra H. Patel v. Union of India:
  Issued directions on solid waste management and municipal accountability.

7. Conclusion

Environmental protection in India is constitutionally grounded through the Seventh Schedule, Directive Principles, Fundamental Duties, and judicial interpretation of Article 21. The inclusion of forests and wildlife in the Concurrent List reflects the importance of cooperative federalism in environmental governance. Judicial activism has transformed environmental law into a rights-based and principle-oriented jurisprudence. However, effective enforcement and inter-governmental coordination remain crucial for achieving sustainable environmental protection.