Project
Protecting the health of La Oroya's residents from toxic pollution
For more than 20 years, residents of La Oroya have been seeking justice and reparations after a metallurgical complex caused heavy metal pollution in their community—in violation of their fundamental rights—and the government failed to take adequate measures to protect them.
On March 22, 2024, the Inter-American Court of Human Rights issued its judgment in the case. It found Peru responsible and ordered it to adopt comprehensive reparation measures. This decision is a historic opportunity to restore the rights of the victims, as well as an important precedent for the protection of the right to a healthy environment in Latin America and for adequate state oversight of corporate activities.
Background
La Oroya is a small city in Peru’s central mountain range, in the department of Junín, about 176 km from Lima. It has a population of around 30,000 inhabitants.
There, in 1922, the U.S. company Cerro de Pasco Cooper Corporation installed the La Oroya Metallurgical Complex to process ore concentrates with high levels of lead, copper, zinc, silver and gold, as well as other contaminants such as sulfur, cadmium and arsenic.
The complex was nationalized in 1974 and operated by the State until 1997, when it was acquired by the US Doe Run Company through its subsidiary Doe Run Peru. In 2009, due to the company's financial crisis, the complex's operations were suspended.
Decades of damage to public health
The Peruvian State - due to the lack of adequate control systems, constant supervision, imposition of sanctions and adoption of immediate actions - has allowed the metallurgical complex to generate very high levels of contamination for decades that have seriously affected the health of residents of La Oroya for generations.
Those living in La Oroya have a higher risk or propensity to develop cancer due to historical exposure to heavy metals. While the health effects of toxic contamination are not immediately noticeable, they may be irreversible or become evident over the long term, affecting the population at various levels. Moreover, the impacts have been differentiated —and even more severe— among children, women and the elderly.
Most of the affected people presented lead levels higher than those recommended by the World Health Organization and, in some cases, higher levels of arsenic and cadmium; in addition to stress, anxiety, skin disorders, gastric problems, chronic headaches and respiratory or cardiac problems, among others.
The search for justice
Over time, several actions were brought at the national and international levels to obtain oversight of the metallurgical complex and its impacts, as well as to obtain redress for the violation of the rights of affected people.
AIDA became involved with La Oroya in 1997 and, since then, we’ve employed various strategies to protect public health, the environment and the rights of its inhabitants.
In 2002, our publication La Oroya Cannot Wait helped to make La Oroya's situation visible internationally and demand remedial measures.
That same year, a group of residents of La Oroya filed an enforcement action against the Ministry of Health and the General Directorate of Environmental Health to protect their rights and those of the rest of the population.
In 2006, they obtained a partially favorable decision from the Constitutional Court that ordered protective measures. However, after more than 14 years, no measures were taken to implement the ruling and the highest court did not take action to enforce it.
Given the lack of effective responses at the national level, AIDA —together with an international coalition of organizations— took the case to the Inter-American Commission on Human Rights (IACHR) and in November 2005 requested measures to protect the right to life, personal integrity and health of the people affected. In 2006, we filed a complaint with the IACHR against the Peruvian State for the violation of the human rights of La Oroya residents.
In 2007, in response to the petition, the IACHR granted protection measures to 65 people from La Oroya and in 2016 extended them to another 15.
Current Situation
To date, the protection measures granted by the IACHR are still in effect. Although the State has issued some decisions to somewhat control the company and the levels of contamination in the area, these have not been effective in protecting the rights of the population or in urgently implementing the necessary actions in La Oroya.
Although the levels of lead and other heavy metals in the blood have decreased since the suspension of operations at the complex, this does not imply that the effects of the contamination have disappeared because the metals remain in other parts of the body and their impacts can appear over the years. The State has not carried out a comprehensive diagnosis and follow-up of the people who were highly exposed to heavy metals at La Oroya. There is also a lack of an epidemiological and blood study on children to show the current state of contamination of the population and its comparison with the studies carried out between 1999 and 2005.
The case before the Inter-American Court
As for the international complaint, in October 2021 —15 years after the process began— the IACHR adopted a decision on the merits of the case and submitted it to the Inter-American Court of Human Rights, after establishing the international responsibility of the Peruvian State in the violation of human rights of residents of La Oroya.
The Court heard the case at a public hearing in October 2022. More than a year later, on March 22, 2024, the international court issued its judgment. In its ruling, the first of its kind, it held Peru responsible for violating the rights of the residents of La Oroya and ordered the government to adopt comprehensive reparation measures, including environmental remediation, reduction and mitigation of polluting emissions, air quality monitoring, free and specialized medical care, compensation, and a resettlement plan for the affected people.
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La Oroya v. Peru: Historic precedent on human rights and the environment
The Inter-American Court of Human Rights set an important precedent for state oversight of industrial pollution. By Rosa Peña and Jacob Kopas* This past March, the Inter-American Court of Human Rights, the human rights tribunal for the Americas, released an historic ruling condemning Peru for failing to control toxic industrial pollution. The ruling set an important precedent for the right to a healthy environment and state oversight of corporate activities across the Americas. This victory began as a petition that the Interamerican Association for Environmental Defense (AIDA) and Earthjustice, together with partner organizations, presented in 2006 on behalf of families and environmental defenders in La Oroya, a small town in the heart of the Peruvian Andes. For more than 100 years, an industrial smelter has exposed La Oroya to extreme levels of toxic pollution, leading to nearly all the town’s children having dangerously high levels of lead and other heavy metals in their blood. The court’s binding judgment is a powerful condemnation that the families of La Oroya are today using to demand concrete action from the Peruvian government. In addition to financial compensation, the court ordered Peru to halt further harmful pollution from the smelter, clean up the toxic metals in the soil and water, and provide specialized health care for the victims and inhabitants of La Oroya. The court's judgment itself also constitutes a form of reparations for the victims, by acknowledging the legitimacy of their work as environmental defenders. The significance of the ruling goes far beyond the immediate benefits for people in La Oroya and Peru. Ensuring the environmental quality of water and air in Latin America remains a major challenge across the Americas. This is the first time that the Inter-American Court has held that industrial pollution can harm human rights, opening a path to justice for communities in so-called “Sacrifice Zones” overburdened with industrial pollution. The court’s landmark ruling establishes several key precedents with significance for both international and domestic jurisprudence. Innovative new measures for collective reparations. This case went beyond previous cases by ordering not only individual reparations, but also collective reparations that benefit all inhabitants of La Oroya. These include environmental remediation of the surrounding ecosystem (para. 351), comprehensive and specialized health care for any inhabitant who presents symptoms (para. 348), and support for relocating inhabitants who wish to do so (para. 355). In addition, the court ordered differentiated measures for women, children, and elderly victims. The judgment also ordered environmental and public health measures that will improve the lives of all Peruvians impacted by the mining industry, including bringing air quality standards in line with international standards (para. 346), guaranteeing that mining companies adhere to the UN Guiding Principles on Business and Human Rights (para. 352), and creating an information system that proactively provides updated air and water quality data in mining areas (para. 354). Showing causality: Exposure to a significant health risk is enough to prove a human rights violation. One major obstacle to access to justice for communities exposed to dangerous pollution is showing causality, that is, proving that pollution caused a specific health condition. Showing causality is often difficult because many communities lack access to proper health care and diagnostic tests, because some conditions such as cancer can be latent and lie undetected for years, and because many different factors contribute to poor health. To account for this reality, the court held that it is sufficient to show that an exposure to pollution created a significant health risk, without having to prove that the exposure caused a concrete condition or disease (para. 204). The court also went a step further, and noted that under the precautionary principle, the lack of scientific certainty regarding those risks cannot be an excuse for failing to adopt measures to protect public health (para. 207). The right to clean air and water as substantive elements of the right to a healthy environment. In the judgment, the Court established that the right to a healthy environment includes the rights to air and water that are free of pollution which could constitute a significant risk to health and rights. These rights also entail specific obligations for states. These include: Setting environmental quality standards that do not constitute a risk to health and that are based on the best available science Monitoring air and water quality and providing access to information on pollution that endangers health Creating plans to maintain air and water quality Effectively enforcing environmental quality standards and ensuring the proper management of water resources (paras. 120-121) Access to public participation in environmental decisions. This ruling is also the first time that the Inter-American Court has condemned a state for failing to guarantee effective public participation in environmental decision-making affecting the general public (para. 256). In prior cases, the court examined the right to public participation only in the context of consultation with Indigenous Peoples, who have special protections under international law. In addition, the court held that the mere existence of formal procedures for public participation may not be sufficient for states to satisfy their obligations under the American Convention. Authorities must also ensure that these procedures provide an effective opportunity to be heard and participate in decision making (para. 260). The judgment also consolidated advances in other important issues for environmental justice in the region: Business and human rights obligations. The court emphasized states’ obligations to protect human rights and their duties to supervise and control companies (paras. 109-110). It also held that companies themselves have responsibilities to respect human rights and act with due diligence, regardless of their size, sector, operational context, ownership, or structure (para. 111). Environmental pollution violates the right to a dignified life. Because pollution impacted many different areas of the lives of families in La Oroya, it also violated their right to a dignified life. These impacts included not being able to carry out a life project under normal circumstances, which affected their personal, family, psychological, and professional development (paras. 220-230). The effects of environmental contamination fall disproportionately on individuals, groups, and communities that already bear the burden of poverty, discrimination, and systemic marginalization. The court recognized that pregnant women, children, teenagers and the elderly, who, given their condition, are frequently exposed to a greater risk of harm from pollution (para. 134). Given the principle of intergenerational equity, states have particular obligations to protect children’s health from environmental pollution and provide specialized care for those that acquired illnesses as a result of exposure (para. 141). The right to a healthy environment as jus cogens. The ruling noted that guaranteeing the interest of both present and future generations from serious, extensive, long-lasting, and irreversible damage to the environment is fundamental for the survival of humanity. The court thereby called on the international community to recognize such environmental harm as violating a preemptory norm (jus cogens) of international law (para. 129). Weakening air quality standards violates international law. The court found that when Peru rolled back national air quality standards for sulfur dioxide, it violated its duty against retrogressive measures inherent in the right to a healthy environment (paras. 182-186). The court held that any such rollbacks must be justified in light of the state’s maximum available resources for guaranteeing human rights and be consistent with the precautionary principle (para. 186). Obligation of active transparency when guaranteeing access to information. This case is the first time the court has found a state responsible for failing its obligation of “active transparency,” which requires states to not only respond to requests for accessing environmental information, but also to actively distribute and publicize environmental information (para. 247). This information must be complete, comprehensible, and in an accessible language (para. 255). The ruling is poised to a significant legal precedent for the many communities affected by industrial pollution. Its ultimate impact will depend on how it is implemented by courts in Peru and throughout Latin America. In Peru alone, the Peruvian Human Rights Ombudsman estimated that over 10 million people (31% of the population) are at risk of exposure to heavy metal pollutants and other chemicals related to the mining industry. With this new ruling as a powerful legal tool, hopefully other communities will not have to wait 100 years to finally breath clean air. *Rosa Peña is a senior attorney with AIDA's Human Rights and Environment Program; Jacob Kopas is a senior attorney with Earthjustice's International Program.
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Warning of increased contamination in La Oroya and slow progress by the State to comply with the Inter-American Court ruling
The State's progress in implementing the international court's ruling has been slow and insufficient. Meanwhile, a high level of sulphur dioxide has recently been registered in the Andean city due to the partial reactivation of the metallurgical complex and the lack of prevention, warning, monitoring and control measures by the state. Two months after the Inter-American Court of Human Rights issued its ruling in the case "La Oroya Community vs. Peru," the Inter-American Association for Environmental Defense (AIDA) and the Pro Human Rights Association (APRODEH), organizations that legally represent the victims, warned at a press conference that the Peru is making slow and insufficient progress in effectively complying with the ruling. The ruling, issued on March 22 and considered a landmark in international law, established Peru’s responsibility for violating the rights of La Oroya residents affected by decades of toxic contamination. The international tribunal ordered comprehensive remedial measures, including environmental cleanup, reduction and mitigation of polluting emissions, air quality monitoring, free and specialized medical care, compensation, and a resettlement plan for the affected people. Increased pollution in La Oroya The organizations also denounced that the government’s slow action is occurring in the midst of an increase in the presence of toxic contamination in the area due to the partial reactivation of the La Oroya Metallurgical Complex and the lack of prevention, warning, monitoring and control measures by the state. According to the Environmental Monitoring System of the Environmental Evaluation and Control Agency, a high presence of sulfur dioxide has recently been recorded in La Oroya, which makes it imperative that Peru take urgent action based on its international responsibility. One of the measures ordered by the Inter-American Court is to ensure that the operations of the La Oroya Metallurgical Complex comply with international environmental standards, preventing and mitigating damage to the environment and human health. Challenges in implementing the ruling During the press conference, Rosa Peña, Senior Attorney for AIDA's Human Rights and Environment Program, said: "The ruling is a great opportunity for the State of Peru to prevent and better manage the environmental impacts of mining and metallurgical activities, as well as to improve health care for people exposed to contamination. The Court has already identified the key aspects, now it is up to the State as a whole to ensure a good implementation that will serve as an example for other cases at national and international levels." Christian Huaylinos, coordinator of the legal sector of APRODEH, emphasized the need for an articulated multisectoral work: "A coordinated effort of the three levels of the state—local, regional and national—is needed to advance in the effective compliance of the sentence. In addition, clear mechanisms must be put in place to ensure the effective participation of victims in the implementation of the orders issued by the Court." Community demands Yolanda Zurita, a petitioner in the case, emphasized the community's frustration with the lack of prompt and effective action: "We, as a population, need to feel and see that there is compliance. It is not possible that after 20 years of litigation, and after the Court's ruling has been made public, there are officials who claim to be ignoring the ruling." The Inter-American Court's ruling not only focuses on reparations for direct victims, but also includes restitution measures and guarantees of non-repetition for the entire population of La Oroya and the country. It defines parameters for the proper conduct of mining and metallurgical operations in Peru, in defense of the environment and health. The ruling is an important precedent for the protection of the right to a healthy environment in Latin America and for adequate state oversight of corporate activities. AIDA and APRODEH urge the Peruvian government to comply with the measures ordered by the Inter-American Court and to take immediate action to protect the environment and health of the community of La Oroya. press contact Víctor Quintanilla-Sangüeza (Mexico), AIDA, [email protected], +52 5570522107
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Community of La Oroya wins landmark ruling to stop environmental damage in Latin America
After more than 20 years, the residents of the town of La Oroya in the Peruvian Andes have found justice, opening a major new avenue for protecting a healthy environment throughout the continent. In an unprecedented decision, the Inter-American Court of Human Rights found Peru guilty of violating their human rights by failing to act in a timely and effective manner to protect them from extreme levels of pollution from a metallurgical complex that has operated in their community for nearly 90 years. "Twenty years ago, when this struggle began, I carried my banner saying that children's health is worth more than gold," recalls Don Pablo, a resident of La Oroya. "We never gave up, and now I am very happy with the Court's decision.” La Oroya is located in the central mountain range of Peru, in the department of Junín, approximately 176 km from Lima. In 1992, the US company Cerro de Pasco Cooper Corporation installed the La Oroya Metallurgical Complex to process ore concentrates. The complex was nationalized in 1974 and operated by the state until 1997, when it was taken over by Doe Run Peru, which operated it until 2009. For generations, the inhabitants of La Oroya have inhaled toxic substances that pose serious risks to human health. Heavy metal contamination has invaded their respiratory system, traveled through their bloodstream, and been imperceptibly deposited in several of their vital organs. Most of those affected had lead levels above those recommended by the World Health Organization, and in some cases higher levels of arsenic and cadmium, in addition to stress, anxiety, skin disorders, stomach problems, chronic headaches, and respiratory or cardiac problems. In 1997, AIDA became involved in defending the rights of the La Oroya community. Our publication La Oroya No Espera (La Oroya Cannot Wait), published in 2002, helped bring the gravity of the situation to international attention. In 2006, in the absence of effective responses in Peru, we joined an international coalition of organizations in filing a complaint against Peru before the Inter-American Commission on Human Rights. In 2021, the Commission established the responsibility of the Peruvian government in the case and referred it to the Inter-American Court. In October 2022, more than 16 years after the complaint was filed, the victims presented the case to the Court in a public hearing, represented by AIDA and the Asociación Pro Derechos Humanos (APRODEH), with the support of Earthjustice. Since 2009, when the metallurgical complex ceased operations due to Doe Run Peru's financial crisis, the levels of heavy metal contamination have not been reduced to acceptable levels. Nor has the situation of those affected improved significantly in recent years. Although the Peruvian government has known since 2009 that all children living near the complex are suffering from lead poisoning, it has not provided them with adequate medical care. But there is no deadline that will not be met. On March 22, the Inter-American Court of Human Rights gave a powerful response to more than two decades of seeking justice. The Court found that Peru was guilty of violating the rights to a healthy environment, health, personal integrity, life with dignity, access to information, political participation, judicial guarantees, and judicial protection of the 80 people involved in the case; of violating the rights of the children of 57 victims; and of violating the right to life of two others. "This is the first judgment that recognizes the international responsibility of a state for violating the right to a healthy environment and other related rights," says Rosa Peña, AIDA Senior Attorney. Ver esta publicación en Instagram In addition, the Court ordered the State to adopt measures of integral reparation for the damage caused to the people of La Oroya. These include the prosecution and punishment of those who harassed the residents for their environmental defense work; the preparation of a remediation plan for air, soil, and water contamination; the provision of free and specialized medical care to the victims, as well as to other residents with symptoms and illnesses related to mining and metallurgical activities; the updating of air quality regulations to ensure the protection of the environment and human health; the provision of monetary compensation to the victims; and the creation of an air, water, and soil quality monitoring system. It also ordered that the operations of the La Oroya Metallurgical Complex—which was transferred to the workers of Doe Run Peru as part of the company's liquidation—comply with international environmental standards and prevent and mitigate damage to the environment and human health. The Court's decision is not only a unique opportunity to restore the dignity and rights of the people of La Oroya. Its scope extends beyond the Peruvian context, making it an important precedent in Latin America for the protection of the right to a healthy environment and for adequate state oversight of corporate activities. Among other things, the Court established the obligations of states to regulate, monitor and control air and water quality, to identify sources of pollution, and to implement plans to enforce air and water quality standards. The Court held that in order to establish state liability for environmental damage, it is sufficient to show that the state, despite being aware of the existence of high levels of pollution, failed to take adequate measures and thus allowed the pollution to continue, thereby posing a significant risk to human health. In light of the judgment, states must prevent human rights abuses by public and private enterprises. Businesses, for their part, must prevent their activities from causing or contributing to human rights abuses and take steps to remedy such abuses. Defending the right to a healthy environment has been part of AIDA's history since our inception and has always been a collective effort. We celebrate and recognize all the people who, from different sectors, roles and capacities, made possible the historic result of the La Oroya case. With renewed vigor, we will work for the proper implementation of the judgment and for the establishment of new important precedents that will guarantee in practice the universal right to a healthy environment in the region.
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