Environmental Law and Sustainability: Core Principles
1.1 What is Environment?
The word “environment” derives from the ancient French word “environner,” meaning to encircle. It refers to all surrounding conditions — natural, social, and cultural — that influence life.
Section 2(a) — Environment (Protection) Act, 1986
Environment means and includes:
- Water, Air, and Land
- The inter-relationship which exists among and between water, air, and land
- The inter-relationship which exists among and between water, air, land, human beings, other living creatures, plants, micro-organisms, and property
Section 2(c) — Environmental Pollution
The presence in the environment of any environmental pollutant.
1.2 Panchbhuta — The Five Elements
The Panchbhuta represents the five fundamental elements of nature according to Indian philosophy. These map directly onto the EPA’s legal framework.
| 🌿 PANCHBHUTA — Keywords |
| Chitti (Kshiti) — Earth / Land |
| Gagan — Sky / Atmosphere |
| Sameera — Air / Wind |
| Pawak — Fire / Energy (also covers heat energy in pollution law) |
| Jal — Water |
1.3 Zameen, Jal, Jungle, Jeev — 4 Pillars
| 🌱 4J Keywords |
| Zameen — Land / Earth |
| Jal — Water |
| Jungle — Forest |
| Jeev — Living Beings / Biodiversity |
1.4 What is Pollution?
Pollution is the addition of any substance (solid, liquid, or gas) or any form of energy (heat, sound, radioactivity) to the environment at a rate faster than it can be dispersed, diluted, decomposed, recycled, or stored in a harmless form.
Types of Pollution
- Air Pollution — harmful substances in the atmosphere (Air Act, 1981)
- Water Pollution — contamination of water or discharge of harmful substance into water
- Land / Soil Pollution — degradation of land quality
- Noise Pollution — unwanted sound harmful to humans, plants, animals, or property
- Light Pollution — excessive artificial light
- Plastic Pollution — accumulation of plastic products in the environment
1.5 10 Ps of Pollution (Causes)
| ⚠️ 10 Ps of Pollution — Keywords |
| 1. Population — rapid population growth increases demand on resources |
| 2. Place — geographic and urban concentration of polluting activities |
| 3. Power Utilization — excessive energy consumption from fossil fuels |
| 4. Plentiful Attitude — mindset of unlimited resource availability |
| 5. Production and Consumption — unsustainable industrial and consumer habits |
| 6. Pollution of Air, Water, and Land — direct contamination outcomes |
| 7. Production and Accumulation of Mounting Waste — unmanaged solid waste |
| 8. Poverty — forces exploitation of natural resources for survival |
| 9. Production of Toxic Chemicals — industrial discharge of hazardous materials |
| 10. Pressure on Ecological Balance — human activity disrupting natural ecosystems |
3.1 The 5 Ps of International Environmental Law
Established primarily through the Stockholm Declaration (1972) and the Rio Declaration (1992):
| 🌍 5 Ps of International Environmental Law |
| 1. People — Human beings are at the centre of sustainable development (Rio Principle 1) |
| 2. Planet — Protecting the Earth’s ecosystems for present and future generations |
| 3. Prosperity — Economic growth must align with environmental sustainability |
| 4. Peace — Peace, development, and environmental protection are interdependent (Rio Principle 25) |
| 5. Partnership — Global cooperation among States (Rio Principle 27) |
3.2 General Principles of Environmental Law
1. Precautionary Principle
Origin: Rio Declaration, Principle 15 (1992 Earth Summit)
- Scientific uncertainty is NOT an excuse for inaction.
- Where there are threats of serious or irreversible damage, cost-effective preventive measures must be taken.
- In Vellore Citizens Forum Case, the Supreme Court held: (i) Environmental measures must anticipate, prevent, and attack causes of degradation; (ii) Lack of scientific certainty cannot postpone action; (iii) Onus of proof is on the actor to show their action is benign.
2. Polluter Pays Principle
Origin: Rio Declaration, Principle 16
- The entity that pollutes or causes environmental degradation must directly pay the cost.
- Costs can be preventative (e.g., environmental tax) or restorative (e.g., clean-up costs).
- The cost of using resources must reflect the environmental impact.
3. Public Trust Doctrine
Landmark Case: M.C. Mehta v. Kamal Nath & Others
- Certain resources (air, water, sea, forests) are so important to the public that they cannot be subject to private ownership.
- The State holds these resources as a trustee for the enjoyment of the general public.
- Facts: Span Motels (linked to Minister Kamal Nath) encroached on the Beas river, causing it to change course — held violative of the public trust doctrine.
4. Prevention Principle
- It is better to prevent pollution at the source than to remediate it later.
- Regulates generation, transportation, treatment, storage, and disposal of hazardous wastes.
- Requires Environmental Impact Assessment (EIA) for activities that could significantly harm the environment.
5. Principle of Sustainable Development
First coined: Maltese proposal at the UN General Assembly, 1967. Discussed in: Cocoyoc Declaration (early 1970s). Codified in: Rio Declaration, 1992.
- Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
- Integrates developmental and environmental imperatives — both economic and ecological sustainability.
- Main motto: While thinking of the present, the future should not be forgotten.
3.3 Rio Declaration — Key Principles
| Principle | Topic | Key Content |
| Principle 1 | Human-centric SD | Humans are at the centre; entitled to a healthy and productive life in harmony with nature |
| Principle 2 | Sovereignty | States have sovereign right to exploit own resources but must not damage environments of other States |
| Principle 3 | Right to Development | Development must equitably meet needs of present and future generations |
| Principle 4 | Integration | Environmental protection is an integral part of development |
| Principle 7 | Common but Differentiated Responsibilities | Developed nations bear greater responsibility due to their higher contribution to global degradation |
| Principle 10 | Public Participation | Environmental issues are best handled with participation of all concerned citizens |
| Principle 15 | Precautionary Principle | Lack of scientific certainty cannot justify inaction against threats of serious/irreversible damage |
| Principle 16 | Polluter Pays | Polluter should bear the cost of pollution with due regard to public interest |
| Principle 17 | EIA | Environmental Impact Assessment is required for activities likely to have significant adverse impacts |
| Principle 25 | Peace-Environment Link | Peace, development, and environmental protection are interdependent and indivisible |
3.4 Salient Features of Sustainable Development
- Inter-generational equity
- Use and conservation of natural resources
- Environmental protection
- Precautionary principle
- Polluter pays principle
- Obligation to assist and cooperate
- Eradication of poverty
- Financial assistance to developing countries
3.5 Types of Environmental Ethics
| Type | Focus | Nature |
| Libertarian Extension | Extends human rights to ALL beings (intrinsic value) | All species deserve equal moral consideration |
| Ecological Extension | All biological beings are interdependent (intrinsic value) | Ecosystems have inherent worth — ecocentric view |
| Conservation Ethics | Anthropocentric — nature has extrinsic/instrumental value | Protect environment as a means to sustain human life |
3.6 Intergenerational vs. Intragenerational Equity
- Inter-generational Equity: The present generation holds the Earth in trust for future generations. We must not use or destroy the environment in a way that harms future people’s ability to meet their own needs.
- Intra-generational Equity: Equity within the present generation — fair distribution of resources and environmental benefits across all nations and peoples today, especially developing countries (Rio Principle 6).
4.1 The 42nd Constitutional Amendment, 1976
The 42nd Amendment was India’s direct response to the Stockholm Conference (1972). It incorporated two critical provisions into the Constitution:
- Article 48-A (DPSP) — Obligates the State to protect and improve the environment.
- Article 51-A(g) (Fundamental Duty) — Obligates every citizen to protect the natural environment.
4.2 Constitutional Articles — Complete Reference
| Article | Category | Content & Exam Usage |
| Article 14 | Fundamental Right | Right to Equality — State action on environment must not discriminate |
| Article 19(1)(a) | Fundamental Right | Freedom of Speech & Expression — basis for PILs in environmental cases |
| Article 19(1)(g) | Fundamental Right | Right to practise any profession — subject to reasonable restrictions |
| Article 21 | Fundamental Right | Right to Life & Personal Liberty — includes Right to a Healthy Environment |
| Article 32 | Fundamental Right | Right to Constitutional Remedies — approach Supreme Court; basis for PILs |
| Article 48 | DPSP | Protection of cows, calves, and draught cattle |
| Article 48-A | DPSP | State shall endeavour to protect and improve the environment and safeguard forests and wildlife |
| Article 51 | DPSP | Promotion of international peace and security; respect for international law |
| Article 51-A(g) | Fundamental Duty | Duty to protect natural environment, forests, lakes, rivers, and wildlife |
| Article 51-A(j) | Fundamental Duty | Duty to strive towards excellence |
| Article 226 | Writ Power | High Courts empowered to issue writs to enforce environmental rights |
| Article 246 | Legislative Power | Divides legislative authority; Forests and wildlife in Concurrent List |
| Article 253 | Treaty Power | Parliament has power to make laws for implementing international treaties |
4.3 Landmark Cases
| Case | Principle Applied | Significance |
| T.N. Godavarman Thirumalpad v. UOI | Art. 48-A + Art. 51-A(g) | Foundation of Green Jurisprudence |
| M.C. Mehta v. Kamal Nath | Public Trust Doctrine | Natural resources cannot be subject to private ownership |
| Vellore Citizens Forum Case | Precautionary Principle | Burden of proof shifts to the actor |
| Mohan Kumar Singhania v. UOI | Article 51-A(j) | Upholding strict training standards |
| State of U.P. v. Yamuna Shanker Misra | Article 51-A(j) | Interpretation of confidential reports |
| State of W.B. v. Sujit Kumar Rana | Art. 48 + 51-A(g) | Constitutional provisions in statutory interpretation |
| Charan Lal Sahu v. UOI | Doctrine of Parens Patriae | State acts as guardian for those who cannot protect themselves |
4.4 Environment (Protection) Act, 1986
Key Aims & Objectives
- Implement decisions of the UN Conference on Human Environment, Stockholm.
- Create a government authority to regulate industry — can issue direct closure orders.
- Coordinate activities of different agencies under existing laws.
- Impose punishment: up to 5 years imprisonment OR fine up to Rs. 1 lakh, OR both.
- Protect the Right to Life under Article 21.
Key Provisions
- Centre empowered to take all necessary measures for environmental protection.
- Can mandate environmental quality standards for emission/discharge of pollutants.
- Can impose restrictions on the location of industries.
- Government has power of entry for examination and testing of equipment.
- Power to analyse samples of air, water, soil, or any other substance.
- Bars discharge of environmental pollutants in excess of prescribed standards.
- Any person can file a complaint in court.
5.1 Most Polluting Industries (Global)
| Rank | Industry | Key Stat |
| 1st | Fossil Fuels | Emissions grew 1% in 2022, reaching 40.5 gigatons of CO₂ |
| 2nd | Agriculture | ~11% of GHG emissions |
| 3rd | Fashion | ~10% of annual carbon footprint |
| 4th | Transport | ~1/5 of GHG emissions |
| 5th | Construction | ~40% of global emissions |
5.2 17 Highly Polluting Industries (India)
The Ministry of Environment and Forests classifies the following 17 categories as highly polluting:
- Sugar, Cement, Distillery, Petrochemical, Pulp and Paper, Tannery
- Fertilizer, Pesticides, Thermal Power Station, Caustic Soda
- Dye and Dye Stuff, Refinery, Copper Smelter, Iron and Steel
- Zinc Smelter, Aluminium, Fertilizer
5.3 India’s Panchamrit Targets (2030)
| 🎯 PANCHAMRIT TARGETS (2030) |
| 1. 500 GW non-fossil energy capacity installed by 2030 |
| 2. 50% of total electric power from non-fossil sources by 2030 |
| 3. 1 Billion Tonnes reduction in projected cumulative carbon emissions |
| 4. Reduce carbon intensity of GDP by 45% (compared to 2005) |
| 5. Achieve Net Zero Carbon Emissions by 2070 |
5.4 Sector-wise Renewable Energy Targets
| Sector | Target |
| Solar Energy | 280 GW installed capacity |
| Wind Energy | 99.5 GW installed capacity |
| Hydro Power | 72 GW installed capacity |
| Green Hydrogen | 5 MMT annual production |
| Green Jobs | 6–10 million jobs projected by 2030 |
5.5 Most Sustainable Countries
- Sweden — consistently top-ranked in the Environmental Performance Index (EPI).
- Denmark — global leader in renewable energy.
- Finland — major investment in hydroelectric power and biomass.
- Switzerland — comprehensive policies to reduce pollution.
- Austria — abundant hydropower and wind energy.
Master Timeline — Key Dates
| Year | Event | Significance |
| 1967 | Maltese Proposal | First proposal of ‘common heritage of mankind’ |
| 1972 | Stockholm Conference | First global environmental conference |
| 1976 | 42nd Amendment | Inserted Art. 48-A and 51-A(g) |
| 1986 | EPA, 1986 | India’s umbrella legislation |
| 1992 | Rio Earth Summit | Produced Rio Declaration, Agenda 21, UNFCCC |
| 2015 | Paris Agreement | Limit global warming to 1.5°C |
| 2070 | Net Zero Target | India’s long-term carbon goal |