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.
Two years after the Court issued its ruling, its implementation remains in the early stages, with minimal progress, due primarily to the Peruvian government’s lack of political will and its constant shifting of arguments to delay the process.
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.
In March 2024, the La Oroya Metallurgical Complex resumed operations and is currently once again causing pollution levels in the city that exceed those recommended by the World Health Organization.
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.
Two years after the ruling was issued, there has been no significant progress in its implementation by the Peruvian State. The victims in this case are still awaiting the implementation of the reparations ordered by the Court, including comprehensive and specialized health care, measures to mitigate pollution from the La Oroya Metallurgical Complex, and the payment of compensation.
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One year after the decision, the state has still not implemented the ordered reparations. The population lacks comprehensive health care and is once again exposed to toxic contamination due to the reactivation of the La Oroya smelter complex, which is operating without adequate environmental management.One year after the Inter-American Court of Human Rights ordered the Peruvian state to provide comprehensive reparations to the residents of La Oroya, after finding it responsible for violating their rights, the victims are still waiting for the ruling to be implemented and for state to comply with its international obligations."It's already been a year since the ruling was announced, how much longer will we have to wait?" asked Yolanda Zurita, a resident of La Oroya and a petitioner in the case. "Enough is enough! 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For the Peruvian State to make real progress in its implementation, it is imperative that the Attorney General's Office issue the Compliance Resolution."Despite the deadlines set by the Inter-American Court for the Peruvian State, there has been virtually no progress in the implementation of the ruling," said Christian Huaylinos, coordinator of the legal department of the Pro Human Rights Association (APRODEH). "Above all, the nature of the case must be taken into account, which implies that La Oroya has been classified as a sacrifice zone due to the high levels of contamination; therefore, the need to fully compensate the victims is urgent." Background of the caseLa Oroya is located in the central mountain range of Peru, in the department of Junin, 176 km from Lima. In 1992, the US company Cerro de Pasco Corporation installed the La Oroya Metallurgical Complex (CMLO) to process mineral concentrates. The complex was nationalized in 1974 and operated by the state under the name Centromin Peru until 1997, when it was taken over by Doe Run Peru, which operated it until 2009. In short, the CMLO is over 100 years old.In La Oroya, most of the people affected by the CMLO contamination, including children, have lead levels higher than those recommended by the World Health Organization. In some cases, they have registered higher levels of arsenic and cadmium, in addition to stress, anxiety, skin problems, stomach problems, chronic headaches, and respiratory or cardiac problems, among others.In the absence of effective responses at the national level and on behalf of the victims, an international coalition of organizations filed a complaint against the Peruvian State with the Inter-American Commission on Human Rights in 2006. In October 2021, the Commission found the Peruvian government responsible and referred the case to the Inter-American Court. In October 2022, more than 16 years after the international complaint was filed, the victims, represented by AIDA and APRODEH with the assistance of Earthjustice, brought the case before the Court. Press contactsVíctor Quintanilla (Mexico), AIDA, [email protected], +52 5570522107María Nieve Sullón (Peru), APRODEH, [email protected], +51 984926868
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