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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Read moreWhy we’re working for climate justice in Latin America
“The world has many problems, but to me none seem as ubiquitous or as dangerous as climate change,” says AIDA attorney Florencia Ortúzar. “It really is the great challenge of our generation.” At AIDA we understand the magnitude of the problem. That’s why we incorporate climate justice as a key concept in all our lines of work. It’s why we advocate for sustainable development that respects the environment and the rights of vulnerable communities and, at the same time, why we work to stop climate-aggravating activities. “What motivates me to fight climate change is my awareness of the huge problem we’re facing, and my steadfast determination—I know we can’t give up,” Florencia says. She shares that motivation with AIDA’s entire team of attorneys, scientists, communicators, fundraisers and administrators. When she was a child, Florencia received a very special gift from her father: a badge that said “world saver.” That very day, on a beach in her native Chile, Florencia hooked the badge to her clothes and began picking up trash, cleaning the beach. That small gift jumpstarted her life’s mission. Florencia went on to study law, with the goal of working for the protection of forests, rivers, animals, and all the elements of the natural world. “Luck was with me when I found AIDA, the organization that has trained me and has enabled me to make my contribution to a better world,” she says. Florencia is part of AIDA’s Climate Change program. Our objective is to help Latin America—one of the regions most vulnerable to the climate crisis—be a leader in the type of changes required on a global level to avoid catastrophe. In partnership with allied organizations and hand-in-hand with communities, we work to stop the blind advance of fracking and large dams, mega-projects which imply significant emissions of methane, a greenhouse gas 34 times more powerful than carbon dioxide. We also work to raise awareness and educate public policy makers on the importance of controlling short-lived climate pollutants. We seek to protect terrestrial and marine ecosystems that capture carbon emissions—such as coral reefs, mangroves, wetlands and páramos—which, in turn, helps to mitigate climate change. We monitor international climate negotiations, advocate for Latin American nations to have the necessary economic resources to deal with climate change, and work to ensure that climate finance respects human rights. “Although many of the effects of climate change are inevitable, and may already be occurring, the efforts we make to stop the problem and to adapt to it will help future generations, who had nothing to do with causing the problem,” Florencia explains. She shares her message wherever she goes, encouraging others to join the fight. “I refuse to be part of the last generation to enjoy the natural wonders of our planet.”
Read moreWhy we’re working for climate justice in Latin America
“The world has many problems, but to me none seem as ubiquitous or as dangerous as climate change,” says AIDA attorney Florencia Ortúzar. “It really is the great challenge of our generation.” At AIDA we understand the magnitude of the problem. That’s why we incorporate climate justice as a key concept in all our lines of work. It’s why we advocate for sustainable development that respects the environment and the rights of vulnerable communities and, at the same time, why we work to stop climate-aggravating activities. “What motivates me to fight climate change is my awareness of the huge problem we’re facing, and my steadfast determination—I know we can’t give up,” Florencia says. She shares that motivation with AIDA’s entire team of attorneys, scientists, communicators, fundraisers and administrators. When she was a child, Florencia received a very special gift from her father: a badge that said “world saver.” That very day, on a beach in her native Chile, Florencia hooked the badge to her clothes and began picking up trash, cleaning the beach. That small gift jumpstarted her life’s mission. Florencia went on to study law, with the goal of working for the protection of forests, rivers, animals, and all the elements of the natural world. “Luck was with me when I found AIDA, the organization that has trained me and has enabled me to make my contribution to a better world,” she says. Florencia is part of AIDA’s Climate Change program. Our objective is to help Latin America—one of the regions most vulnerable to the climate crisis—be a leader in the type of changes required on a global level to avoid catastrophe. In partnership with allied organizations and hand-in-hand with communities, we work to stop the blind advance of fracking and large dams, mega-projects which imply significant emissions of methane, a greenhouse gas 34 times more powerful than carbon dioxide. We also work to raise awareness and educate public policy makers on the importance of controlling short-lived climate pollutants. We seek to protect terrestrial and marine ecosystems that capture carbon emissions—such as coral reefs, mangroves, wetlands and páramos—which, in turn, helps to mitigate climate change. We monitor international climate negotiations, advocate for Latin American nations to have the necessary economic resources to deal with climate change, and work to ensure that climate finance respects human rights. “Although many of the effects of climate change are inevitable, and may already be occurring, the efforts we make to stop the problem and to adapt to it will help future generations, who had nothing to do with causing the problem,” Florencia explains. She shares her message wherever she goes, encouraging others to join the fight. “I refuse to be part of the last generation to enjoy the natural wonders of our planet.”
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