“The Constitution is not a mere lawyers’ document, it is a vehicle of Life, and its spirit is always the spirit of Age.”- B.R. Ambedkar
Constitutionalization of environmental problems under Article 21 is the embodiment of this spirit.
Constitutionalization is done through
Expansion of Article 21
Use of Directive Principles (Art. 48A, 51A(g))
Development of Doctrines (Polluter Pays, Precautionary Principle, Public Trust, Absolute Liability, Intergenerational Equity)
Expansion of Judicial Review & PILs
Use of Continuous Mandamus
Relevant case laws
Industrial Pollution
MC Mehta v. Union of India (Oleum Gas Leak, 1986) – Established Absolute Liability for hazardous industries.
Indian Council for Enviro-Legal Action v. UOI (1996) – Applied Polluter Pays Principle.
Water Pollution
MC Mehta v. UOI (Ganga Pollution, 1988) – Ordered closure of polluting tanneries.
Paryavaran Suraksha Samiti v. UOI (2017) – Directed installation of Sewage Treatment Plants (STPs).
Air Pollution
MC Mehta v. UOI (Delhi Pollution, 1998) – Mandated conversion of public transport to CNG.
MC Mehta v. UOI (Firecrackers, 2024) – Imposed ban to ensure clean air.
Deforestation & Forest Rights
T.N. Godavarman v. UOI (1997-ongoing) – Continuous mandamus for forest conservation.
Niyamgiri Case (2013) – Empowered Gram Sabha to protect tribal rights.
Climate Change
M.K. Ranjitsinh v. UOI (2024) – Recognised Right against adverse climate impacts under Articles 14 and 21.
Natural Resources
MC Mehta v. Kamal Nath (1997) – Applied Public Trust Doctrine to rivers.
Reliance Natural Resources v. RIL (2010) – Declared natural resources as public property.
Development Projects
Narmada Bachao Andolan v. UOI (2000) – Integrated sustainable development into constitutional law.
Vanashakti v. UOI (2024) – Stressed need for prior environmental clearance.
As Justice P.N. Bhagwati observed, “Right to life includes the right to live with human dignity” – and dignity today is inseparable from a clean and healthy environment.