LLM Group 6 Environment and Legal Order Prevention and Control of Pollution 2025-26 - Set 2 Question Paper with Solutions

For full marks, cover: "explain" asks for more than a definition, so show how the idea of pollution developed, from nuisance at common law to the threshold definitions of the modern statutes, and the scientific distinctions a lawyer needs. Classify the kinds by their source, since that is how the law allocates responsibility. The third limb says "elaborate", so the impact must be taken dimension by dimension, health, economy, ecology, climate and equity, with Indian figures and with cases in which courts found the impact as fact.

The idea before the statutes: pollution as nuisance

Long before India had a pollution statute, the law dealt with pollution as nuisance. A person whose well was fouled or whose air was filled with smoke could sue in private nuisance, and an interference with the public at large was a public nuisance punishable under the Penal Code and removable by a magistrate's order. The limitation was that nuisance reacts to harm already suffered in a particular place, and it gives no standard by which a factory can know in advance what it may lawfully discharge.

Three consequences follow. Pollution is a question of quantity, so the law works through numerical standards. Harm need only be likely, so regulation can act before damage occurs. And because a substance within the standard is not pollution in law, the consent a Board grants is permission to discharge within limits, not a promise that nothing will be discharged.

Four distinctions a lawyer must know

Pollutant and contaminant. A contaminant is a substance present where it does not belong. It becomes a pollutant when it reaches the concentration at which harm is likely. The statutes regulate pollutants, which is why the threshold matters.

Point and non-point sources. A point source is a single identifiable outlet, such as a factory drain or a chimney, and is easy to regulate by consent. A non-point source is diffuse, such as fertiliser run-off from thousands of fields, and the consent system hardly reaches it.

Industrial pollution is the classical kind and the one the consent system was built for. The tanneries on the Palar in Vellore Citizens Welfare Forum v. Union of India, (1996) 5 SCC 647, and at Jajmau on the Ganga in M.C. Mehta v. Union of India, (1987) 4 SCC 463, are its standard illustrations.

Vehicular pollution is the dominant urban kind. In M.C. Mehta v. Union of India, (1998) 6 SCC 63, decided on 28 July 1998, the Government's own White Paper recorded that vehicles contributed seventy per cent of Delhi's air pollution against twenty per cent in 1970. The Court fixed dates itself: commercial vehicles more than fifteen years old were to stop plying by 2 October 1998, and the public transport fleet was to be converted to a single clean fuel.

The impact on human health

The health impact is the best measured. The India State-Level Disease Burden Initiative, publishing the Global Burden of Disease Study 2019 in The Lancet Planetary Health in 2021, attributed 1.67 million deaths in India in 2019 to air pollution, which was 17.8 per cent of all deaths in the country. Of these, 0.98 million were attributed to ambient particulate pollution and 0.61 million to household air pollution from cooking with solid fuels.

Water pollution adds its own burden. The Central Ground Water Board's report for 2024 found nitrate beyond the permissible limit in 19.8 per cent of groundwater samples, fluoride in 9.04 per cent and arsenic in 3.1 per cent, and those are the waters rural India drinks.

The impact on the economy

Pollution is an economic cost that the polluter shifts onto others. The same Lancet study estimated the output lost to premature deaths and disease from air pollution at 36.8 billion US dollars, 1.36 per cent of India's gross domestic product in 2019, and found the loss heaviest as a share of state output in the poorer States of Uttar Pradesh, Bihar, Rajasthan, Madhya Pradesh and Chhattisgarh. That shifted cost is exactly what the polluter pays principle is designed to return to its source.

The climate impact is now recognised as a legal injury. In M.K. Ranjitsinh v. Union of India, 2024 INSC 280, decided on 21 March 2024, a case about power lines killing the Great Indian Bustard, the Supreme Court held that Articles 14 and 21 are sources of a right against the adverse effects of climate change, and that the inability of underserved communities to adapt engages the right to equality as well.

The impact on equity

The burden of pollution is not shared evenly. The 0.61 million deaths from household air pollution fall mainly on women who cook with solid fuel. The residents of Ratlam who lived beside open drains and the villagers of Bichhri whose wells turned dark were poor, and the industries that polluted them were not. The Oleum gas leak of 4 December 1985 from a Shriram plant in a densely populated part of Delhi led the Supreme Court in M.C. Mehta v. Union of India, AIR 1987 SC 1086, (1987) 1 SCC 395, to hold a hazardous enterprise absolutely liable and to tie compensation to the capacity of the enterprise, precisely because the victims could not match its resources.

Conclusion. Pollution began in law as nuisance and became, in the statutes of 1974, 1981 and 1986, the presence of a substance in a medium at a concentration that is or is likely to be injurious. By source it is industrial, vehicular, domestic, agricultural, energy-related or natural, and each source calls for a different regulatory tool. Its impact is severe and measurable: 1.67 million deaths and 1.36 per cent of output in 2019 from air pollution alone, rivers receiving 52,133 million litres of untreated sewage a day, and aquifers carrying nitrate in one sample in five. The courts have treated that impact as a violation of Article 21 in Tirupur and Ranjitsinh, but Deepak Nitrite shows the limit: an impact must be proved before it is compensated, which is why prevention remains the law's first line.