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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Peru must find a comprehensive and sustainable solution for La Oroya
We call on the President-elect of Peru to take into account, in any assessment of or decision about La Oroya, the rights of the population affected by the city’s severe pollution. La Oroya, Peru. On July 6, the President-elect of Peru, Pedro Pablo Kuczynski, visited the Metallurgical Complex of La Oroya (CMLO) and announced to its workers that it was necessary for the next Congress to approve a law to extend the deadline for liquidation of the Complex. This, he said, would give the company time to secure investors and finish the copper circuit. He also asked the workers and people of La Oroya to march on Congress to support his proposal. Reflecting on these public statements, the Asociación Pro Derechos Humanos (APRODEH) and the Interamerican Association for Environmental Defense would like to express the following: The city of La Oroya deserves the full attention of all levels and sectors of government to resolve in a comprehensive, specialized and sustainable way the demands of the population that, at various times in its history, has suffered, and continues to suffer, violations of their basic human rights, including the right to life, health, integrity, work and a healthy environment. Regarding the right to work, La Oroya requires a deep assessment that permits the State to propose and implement not only remedial actions, but also actions that will guarantee decent and lasting work that will sustain adequate living conditions for the entire population. No action can resolve the underlying problem in La Oroya if it does not provide a guarantee of public health for residents. In that regard, we would like to remind the President-elect that since 2007 a group of residents from La Oroya have been the beneficiaries of precautionary measures granted by the Inter-American Commission on Human Rights that safeguard their life and personal integrity before the impacts of highly polluted air, soil and water. In May 2016, the Commission extended those precautionary measures to include new beneficiaries. In the corresponding resolution, the Commission stressed that harm to the health of the beneficiaries is exacerbated due to the lack of comprehensive medical care offered by the State. Its also worth noting that a case is pending before the Commission which seeks to hold the Peruvian government responsible for the violations to the population’s basic rights to life, health, and integrity—as well as to the rights of children—due to the lack of control of pollution in La Oroya and the lack of effective medical care for those affected by it. We call on the President-elect to take into account, in any evaluation or decision on La Oroya, the rights of the population affected by the pollution. This should be done responsibly and with a comprehensive vision that guarantees the rights to life, health, work, and a healthy environment. It is inconceivable to favor the development of any economic activity over the health of the people. The incoming government faces the challenge of finding a comprehensive and sustainable solution for La Oroya, one that fully respects Peru’s national and international obligations to human rights and the environment.
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IACHR urges Peru to protect 14 additional people affected by pollution in La Oroya
The Commission did so by extending the precautionary measures originally granted in 2007. The decision arrives six years after it was requested, and confirms the severity of health deterioration in La Oroya. It also confirms that the life and integrity of affected people are at risk, and require urgent and adequate protection by the Peruvian State. Washington DC, USA. The Inter-American Commission on Human Rights (IACHR) urged the Peruvian government to protect the life and integrity of 14 additional people affected by toxic pollution in the city of La Oroya. They join the 65 people already protected by precautionary measures granted by the international body in 2007. The decision reaffirms that the health of the beneficiaries has deteriorated severely, they continue to be at risk, and their government must provide prompt and adequate care. The Interamerican Association of Environmental Defense (AIDA)—together with the Asociación Pro Derechos Humanos (APRODEH), the Centro de Derechos Humanos y Ambiente (CEDHA) and Earthjustice—represents the victims who benefit from the precautionary measures before the Commission. We express our satisfaction with the Commission’s decision, which arrives six years after it was originally requested. A metal smelter operated by Doe Run Peru is the source of the heavy metal contamination in La Oroya. The Commission has established that the lack of integral and specialized medical care, as well as health deterioration over time, could affect the right to life and integrity of the beneficiaries of the precautionary measures, which now number 79. “The extension of the precautionary measures reaffirms the urgent and serious situation threatening the life and integrity of the people of La Oroya. We hope the State fully complies with the provisions in favor of all of the beneficiaries, providing them with adequate and specialized medical attention,” said María José Veramendi Villa, AIDA attorney. The Commission’s decision states that the government of Peru must conduct the medical evaluations necessary to determine the levels of lead, cadmium and arsenic in the blood of affected people, in order to provide them with appropriate medical care, in accordance with international standards. The government must also report on the actions taken to investigate the facts that led to the extension of the precautionary measures, in order to avoid their repetition. Our case on the human rights violations committed against the affected people remains pending the final decision of the Commission. AIDA and APRODEH expect that the report will hold the Peruvian government responsible for said violations.
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My first visit to La Oroya
By Rodrigo da Costa Sales, AIDA attorney “What do you think of La Oroya?” a local resident asked me the first time we met. Honestly, I wasn’t quite sure how to respond. Quickly sensing my discomfort, he joked, “It’s very beautiful, there’s so much biodiversity, and the sky is so blue...” Relieved, I laughed along with him and, since that moment, I’ve been searching for the words to describe La Oroya. La Oroya is a city of 33,000 people on the Mantaro River in central Peru, at an altitude of nearly 5,000 meters. This was my first time there, and I stayed only two days. The trip from Lima takes five hours, winding along painfully curvy roads with breathtaking views of the mountains all around. In La Oroya, however, the landscape changes drastically. The city is covered in a sheet of grey, with little to no natural life, streets full of trucks transporting iron and other heavy metals... and not much else of note. My greatest wish for my time in La Oroya was to meet the people we are representing in our case before the Inter-American Commission on Human Rights. After working on it for six months, I wanted finally to put faces to the names I had come to know so well on paper. Our meeting was scheduled for the evening, when residents could find time free from work and family commitments. There, we introduced them to students from Yale University, who were developing an important report on the relationship between La Oroya’s air quality and the health of city residents. Although interested in the study, and happy to hear about it, residents quickly peppered us with questions about the case. The main thing they wanted to know—an answer they have been waiting for since our petition was filed seven years ago—was when the Commission will make its decision. They explained the many offensive comments they’ve had to endure, both from workers at the metal-smelting complex and from their own neighbors, during the long wait for a ruling. They’ve suffered threats from fellow residents of La Oroya, who wrongfully believe that the purpose of the case is to close the complex, which would leave many people without jobs. In one especially disturbing instance, a “doctor” spoke on television claiming that lead contamination does not cause any health problems. He claimed the residents of La Oroya as proof that, while contaminated by lead and other heavy metals, people could still lead normal lives. We reminded them that a process before an international organism involves years of waiting, and that we sympathized with them for everything they had been through in the past few years. But the truth is that I felt such intense frustration. It was the first time that I saw, up close, such personal desire for an international decision. I understood then that a decision on paper could actually constitute a form of reparation. The long-awaited Commission report will show the world that the effects of heavy-metal pollution on a population actually violate their personal integrity and right to health. The goal of this case is not to close the metallurgical complex, but instead to force the adoption of measures that guarantee a certain quality of life for the residents of La Oroya. The Commission’s report will be the instrument in this case by which international and human rights law becomes real, effective and transformative. I returned from La Oroya almost a week ago, and I’m still searching for the words to describe such a place. Truthfully, La Oroya didn’t seem very nice at first. But I quickly came to realize that the beauty of a place comes not only from its natural and man-made attractions; it comes also, and perhaps more importantly, from the beauty of its people. In that sense, I’ve never seen a city quite as beautiful as La Oroya. This blog is dedicated all the victims of the case in La Oroya. I hope that they will achieve justice, and that because of them, a case like this is never repeated around the world. It is also dedicated to Astrid Puentes and Maria José, AIDA’s attorneys in charge of the La Oroya case, who inspire me daily to work for a more just world.
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