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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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 OroyaThe 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 rulingDuring 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 demandsYolanda 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 contactVíctor Quintanilla-Sangüeza (Mexico), AIDA, [email protected], +52 5570522107
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