Public Interest Litigation and Environmental Remedies: Locus Standi, Continuing Mandamus, Expert Committees, Closure, Restoration and Public Law Compensation

Much of Indian environmental law was made not in Parliament but in courtrooms. From the limestone quarries of Dehradun and the tanneries on the Ganga to the smog of Delhi and the forests of the whole country, public interest litigation (PIL) allowed citizens, lawyers, NGOs and even letter-writers to bring environmental grievances directly to the Supreme Court and High Courts. The courts responded by relaxing standing, inventing new procedures such as continuing mandamus and court-appointed committees, and fashioning remedies from closure and relocation of industries to restoration of ecosystems and public law compensation. This note explains the procedure, the remedies, and their limits.

1. Environmental PIL: Origins and Nature

Public interest litigation is litigation for the protection of the public interest, brought by a person who may not be personally injured, on behalf of those who cannot approach the court themselves or for a collective, diffuse interest such as the environment. It emerged in India in the late 1970s and early 1980s through judges such as P.N. Bhagwati and V.R. Krishna Iyer, as a response to poverty, illiteracy and the inaccessibility of courts. Environmental PIL followed quickly, because environmental harm is diffuse (affecting many people slightly), long-term, and often caused or tolerated by the State itself.

Environmental PIL is non-adversarial in character: the court treats the proceeding as a collaborative effort by the petitioner, the State and the court to find solutions, rather than a contest between parties. The court may appoint amici curiae, commissions and committees, and may monitor implementation over years. The first major environmental PIL was Rural Litigation and Entitlement Kendra v. State of U.P. (the Dehradun quarrying case), (1985) 2 SCC 431, begun by a letter complaining of limestone quarrying in the Mussoorie hills, in which the Court appointed an expert committee and ordered the closure of quarries causing ecological damage, while noting the hardship to lessees and workers.

2. Relaxation of Locus Standi and Public-Spirited Persons

2.1 Relaxation of locus standi

The traditional rule of locus standi allowed only a person whose own legal right had been infringed to sue. In S.P. Gupta v. Union of India, 1981 Supp SCC 87 (the Judges' Transfer case), the Supreme Court held that where a legal wrong is done to a person or class who cannot approach the court because of poverty, disability or a socially or economically disadvantaged position, any member of the public acting bona fide may maintain a petition. It also recognised a public injury standing for any citizen to challenge a wrong affecting the public at large. In environmental cases, this means that anyone concerned about pollution or ecological harm may approach the court, even without a personal stake.

2.2 Public-spirited persons in environmental litigation

Much environmental PIL has been driven by committed individuals and organisations: advocate M.C. Mehta (whose petitions produced the Oleum, Ganga, Taj, Delhi vehicular pollution and industrial relocation cases), T.N. Godavarman Thirumulpad (forests), the Vellore Citizens' Welfare Forum (tanneries), the Indian Council for Enviro-Legal Action (Bichhri), Goa Foundation (mining) and many local groups. The courts have, however, insisted on bona fides. In Subhash Kumar v. State of Bihar, (1991) 1 SCC 598, while recognising the right to pollution-free water and air, the Court dismissed the petition because the petitioner was pursuing a personal commercial grievance, holding that PIL cannot be used to satisfy a personal grudge. In State of Uttaranchal v. Balwant Singh Chaufal, (2010) 3 SCC 402, it laid down guidelines to curb frivolous and motivated PILs, requiring courts to verify the petitioner's credentials and the public interest involved.

3. Procedure in Environmental PIL

3.1 Epistolary jurisdiction

Epistolary jurisdiction is the court's practice of treating a letter or postcard addressed to the court or a judge as a writ petition. It was developed in cases such as Sunil Batra v. Delhi Administration (1980) and Bandhua Mukti Morcha v. Union of India, (1984) 3 SCC 161, and applied in environmental cases such as the Dehradun quarrying case. The Supreme Court's PIL guidelines (1988, as revised) specify categories of letters that may be entertained, including those relating to environmental pollution, disturbance of ecological balance, drugs, food adulteration, maintenance of heritage and culture, antiques, forest and wildlife and other matters of public importance. Letter petitions are screened by a PIL cell before being placed before a judge.

3.2 Article 32 environmental PIL

Article 32 allows a person to move the Supreme Court directly for enforcement of fundamental rights. Environmental PIL under Article 32 rests on the recognition that the right to a healthy environment is part of Article 21 (Subhash Kumar, 1991; Virender Gaur v. State of Haryana, (1995) 2 SCC 577) and on Article 14. Article 32 is itself a fundamental right, and the Supreme Court's powers under it, read with Article 142 (complete justice), are wide enough to issue any direction or order. The Supreme Court has, however, often directed petitioners to approach the High Court or the NGT first, to manage its docket.

3.3 Article 226 environmental PIL

Article 226 empowers High Courts to issue writs for enforcement of fundamental rights and for any other purpose, making it wider than Article 32: it covers enforcement of statutory duties and legal rights, not only fundamental rights. High Courts are closer to local problems and have handled many environmental PILs on lakes, mangroves, noise, waste and urban planning. In Vellore (1996) the Supreme Court asked the Madras High Court to constitute a Green Bench, and several High Courts have done so. After the NGT Act, 2010, the Supreme Court in Bhopal Gas Peedith Mahila Udyog Sangathan (2012) encouraged transfer of environmental matters to the NGT, but the writ jurisdiction under Article 226 remains part of the basic structure (L. Chandra Kumar, 1997).

4. Continuing Mandamus and Court-Appointed Bodies

4.1 Continuing mandamus

A continuing mandamus is a technique by which the court, instead of deciding a case and closing it, keeps the matter pending, issues a series of directions over time, and monitors compliance by the executive through periodic reports. The technique was named in Vineet Narain v. Union of India, (1998) 1 SCC 226, a corruption case, but was used earlier in environmental cases. The most prominent examples are:

• T.N. Godavarman Thirumulpad v. Union of India (W.P. (C) No. 202 of 1995), in which the Court redefined 'forest' in 1996 to cover all forests irrespective of ownership, and has since supervised forest diversion, compensatory afforestation, NPV and CAMPA, and protected areas for three decades; and
• M.C. Mehta v. Union of India (W.P. (C) No. 13029 of 1985), the Delhi air pollution case, through which the Court mandated CNG for public transport, the BS-VI leapfrog, bans on pet coke and old vehicles, GRAP, and continues to supervise the CAQM and NCR States.

Continuing mandamus allows courts to address complex, polycentric problems that cannot be solved by a single order. Critics argue that it turns courts into administrators, blurs the separation of powers, and keeps cases alive for decades without clear end-points.

4.2 Court-appointed expert committees

Because environmental disputes turn on science, courts rely on expert committees: the Bhargava Committee in the Dehradun case; NEERI reports in Vellore, Bichhri and other cases; expert committees on forest valuation (NPV) in Godavarman; and the expert committee on the Great Indian Bustard in Ranjitsinh (2024). The NGT routinely appoints joint committees of the CPCB, State Board and district administration. Courts must give parties an opportunity to respond to committee reports to satisfy natural justice.

4.3 Monitoring committees and environmental commissioners

Courts have created monitoring bodies to supervise implementation: the Environment Pollution (Prevention and Control) Authority (EPCA) for Delhi (1998); the Central Empowered Committee (CEC) in Godavarman (2002), now reconstituted as a permanent body under the EPA (2023); the Supreme Court Monitoring Committee on hazardous waste in Research Foundation (2003); and the Monitoring Committee on misuse of residential premises in Delhi (the sealing drive, 2006). Courts also appoint commissioners to inspect sites and report (a practice rooted in Bandhua Mukti Morcha), and amici curiae who act as the court's friends and often frame the remedial agenda. The Loss of Ecology (Prevention and Payment of Compensation) Authority constituted on the direction in Vellore (1996) under Section 3(3) of the EPA assessed damage and compensation from tanneries.

5. Environmental Remedies

5.1 Closure orders

Closure of a polluting unit is the most drastic remedy. In M.C. Mehta v. Union of India (Kanpur Tanneries), (1987) 4 SCC 463, the Supreme Court ordered the closure of tanneries at Jajmau near Kanpur that had not set up primary treatment plants, holding that 'just like an industry which cannot pay minimum wages to its workers cannot be allowed to exist, a tannery which cannot set up a primary treatment plant cannot be permitted to continue'. The Sterlite copper smelter at Thoothukudi illustrates the evolution: in 2013 the Supreme Court declined closure and imposed Rs 100 crore compensation, but after the Tamil Nadu Board ordered closure in 2018, the Madras High Court upheld it (2020), and on 29 February 2024 the Supreme Court (Vedanta Ltd. v. State of Tamil Nadu) refused to allow the plant to reopen, citing repeated violations. Closure is also available to regulators under Section 5 of the EPA, Section 33A of the Water Act and Section 31A of the Air Act.

5.2 Relocation of polluting industries

Where closure would be too harsh and the location is the problem, courts have ordered relocation. In M.C. Mehta v. Union of India (Delhi industries), (1996) 4 SCC 750, the Court ordered hazardous and noxious industries operating in Delhi in violation of the Master Plan to relocate outside the city, with detailed directions for compensation and continuity of employment for workers. In M.C. Mehta v. Union of India (Taj Trapezium), (1997) 2 SCC 353, it directed coal- and coke-based industries in the Taj Trapezium Zone to switch to natural gas or relocate, to protect the Taj Mahal from sulphur dioxide, applying the precautionary and polluter pays principles.

5.3 Environmental compensation, restoration and remediation orders

Courts order polluters to pay environmental compensation for harm already caused, and to restore and remediate the environment:

• Bichhri (1996): the polluting industries were made liable for the cost of remedial measures to restore soil and groundwater, recoverable by the Central Government;
• Vellore (1996): tanneries were directed to pay compensation assessed by the Loss of Ecology Authority, for both victims and reversal of ecological damage;
• M.C. Mehta v. Kamal Nath (1997, 2000, 2002): the lessee was directed to restore the Beas riverbank and pay the cost of restoration and exemplary damages; and
• Godavarman: user agencies pay NPV and fund compensatory afforestation for diverted forest land.

5.4 Injunctions

Constitutional courts and the NGT issue prohibitory injunctions (stopping construction, mining, dumping or tree felling) and mandatory injunctions (requiring installation of treatment plants, removal of waste, restoration of land). Interim injunctions are frequently granted on the precautionary principle, where the harm would be irreversible if the activity continued pending trial.

6. Writs against Pollution Control Authorities

6.1 Writ of mandamus in environmental cases

Mandamus commands a public authority to perform a public duty imposed by law. In environmental cases it has been used to compel municipalities to remove garbage and build drains (Ratlam, 1980; Almitra Patel, 2000), State Boards to act against polluters, and governments to implement statutes and notifications (CRZ, wetlands, EIA). Mandamus lies where there is a legal duty; it cannot usually dictate how discretion is to be exercised, but courts have compelled authorities to exercise discretion lawfully and consistently with the precautionary and polluter pays principles.

6.2 Writs against pollution control authorities

Citizens may seek writs against Pollution Control Boards for failure to act (not inspecting, not refusing consent, not closing violating units), for unlawful action (granting consent without considering relevant factors), and for structural failures. In A.P. Pollution Control Board v. Prof. M.V. Nayudu, (1999) 2 SCC 718, the Court quashed permission for a hazardous industry near drinking water reservoirs and emphasised the need for scientific expertise in regulators. In Techi Tagi Tara v. Rajendra Singh Bhandari, (2018) 11 SCC 734, it noted that many State Boards were headed by persons without the required expertise and directed States to frame rules on qualifications and appointments. Industries in turn challenge closure orders by writ or before the NGT on grounds of natural justice and proportionality.

7. Public Law Compensation

Public law compensation is monetary relief awarded by a constitutional court under Articles 32 and 226 for violation of fundamental rights, independent of private law damages. It was established in Rudul Sah v. State of Bihar, (1983) 4 SCC 141, and explained in Nilabati Behera v. State of Orissa, (1993) 2 SCC 746, as a remedy based on strict liability of the State for violation of fundamental rights, where sovereign immunity is no defence. In environmental cases, the courts have extended the idea by directing polluters (and the State) to pay compensation for violation of the Article 21 right to a healthy environment, as in Oleum, Bichhri and Vellore. The NGT now exercises a statutory form of this jurisdiction under Section 15 of the NGT Act.

8. Enforcement: Contempt and Continuing Jurisdiction

8.1 Contempt for non-compliance with environmental orders

Disobedience of court orders is punishable as civil contempt under the Contempt of Courts Act, 1971, and the Supreme Court and High Courts are courts of record with inherent contempt power (Articles 129 and 215). Contempt proceedings have been used against officials who failed to implement orders on sealing, forest diversion and pollution control, and against industries that defied closure. In the Bichhri litigation, Indian Council for Enviro-Legal Action v. Union of India, (2011) 8 SCC 161, the Court, confronted with fifteen years of evasion, dismissed the polluters' applications, imposed compound interest on the unpaid remediation cost and heavy costs, and emphasised that litigants who abuse process to delay compliance must pay for it. The NGT has parallel powers under Sections 25 and 26 of the NGT Act.

8.2 The Supreme Court's continuing environmental jurisdiction

Through continuing mandamus, the Supreme Court has effectively become a standing environmental authority in Godavarman (forests), M.C. Mehta (Delhi air, Taj, Ganga, Aravallis) and other matters. It has recently used this jurisdiction to extend a one-kilometre ban on mining around protected areas nationwide (In re Saranda Wildlife Sanctuary, November 2025) and to supervise Delhi's winter air quality measures. This role has produced major gains but raises concerns about democratic accountability, institutional capacity and the displacement of expert regulators.

8.3 Suo motu environmental proceedings

Constitutional courts may take suo motu cognisance of environmental problems on the basis of news reports, letters or their own knowledge. The Supreme Court in January 2021 took suo motu cognisance of the discharge of untreated effluents into the Yamuna (In re: Remediation of Polluted Rivers) and expanded it to polluted rivers across the country. High Courts have acted suo motu on noise, lakes, waste and air pollution, and the NGT's suo motu power was upheld in Municipal Corporation of Greater Mumbai v. Ankita Sinha (2021). Suo motu jurisdiction is powerful but must be exercised with fairness to affected parties.

9. Critical Appraisal

Environmental PIL transformed Indian environmental law, giving voice to the voiceless, creating the principles of absolute liability, polluter pays, precaution and public trust, and forcing inert administrations to act. It remains one of India's most admired legal innovations. Its critics point to judicial overreach into policy and administration, uneven implementation of orders, the displacement of livelihoods (such as workers in closed industries and forest dwellers affected by eviction orders), decades-long pendency, and the risk of motivated or frivolous petitions. The creation of the NGT and statutory bodies like the CAQM reflects a shift from court-led governance to specialised institutions, with PIL as a backstop. The best environmental PIL combines scientific rigour, fair process for all affected, and clear, time-bound remedies.

10. Related Topics and Provisions