Project
Shutterstock.
Pollution of the Motagua River in Guatemala: The Poqomam Maya people’s quest for environmental justice
The Motagua River basin—Guatemala’s largest and most important river—is severely polluted with wastewater, solid waste, and other types of debris.
This is a cross-border issue because the Motagua’s polluted waters flow into the Caribbean Sea, reach the coast of Honduras, and threaten the Mesoamerican Reef System.
For decades, this has violated the rights to health, water, development, and a healthy environment of all the people living in the river basin.
In June 2025, the Poqomam Maya community of Santa Cruz Chinautla—supported by AIDA, the Indigenous Peoples’ Law Firm, and allied organizations—achieved an unprecedented legal victory to halt degradation in the basin. In response to the lawsuit it filed, a Guatemalan court ordered the municipality of Chinautla to comply with a series of obligations to curb the pollution of the area’s rivers and soil.
The government's response to the ruling has so far been limited to technical working group meetings. Meanwhile, the community continues to work toward the proper implementation of the ruling and to take other actions to defend its territory and its rights.
Background
The Motagua River, which is 486 km long, flows through 96 municipalities and 14 departments in Guatemala. It originates in Quiché, a department located in the northwest, and empties into the Caribbean Sea.
Polluting activities occur throughout the entire basin, including sub-basins and micro-basins. The largest volume of pollution comes from Guatemala City, the country’s capital, and is carried by the waters of the Las Vacas River, which in turn receives a large amount of waste from the Chinautla River.
The Chinautla River, which flows through the municipality of the same name, carries solid waste from a landfill located in Zone 3 of the capital—where trash from at least 14 municipalities in the department of Guatemala is dumped—as well as sewage generated by some 500,000 people living in the northern part of the capital, which undergoes no prior treatment.
Other sources of pollution include the numerous illegal dumps in the municipality of Chinautla, the waste that private vehicles and garbage trucks dump along the banks of its rivers, as well as the sand-mining companies—which began setting up operations in the area between 1996 and 1997—whose activities weaken the rivers' basins, causing solid waste to be more easily carried away by the river currents.
Photo: Mayela Sánchez García.
The situation extends beyond national borders. Every year, the Motagua River discharges some 20,000 metric tons of plastic into the Caribbean Sea, making it one of the rivers that contributes the most plastic pollution to the ocean worldwide, according to estimates contained in a 2025 report by the Inter-American Commission on Human Rights (IACHR).
The river flows into the Mesoamerican Reef at its mouth, so pollution also threatens to degrade one of the largest and most biodiverse transboundary reefs on the planet, which spans the territorial waters of Belize, Guatemala, Honduras, and Mexico.
In addition, the contaminated water reaches the coast of Honduras and spreads into Amatique Bay, located along the eastern coast of Guatemala, affecting the Caribbean Sea.
The roots of this chronic, cross-border problem are structural. Data from the Integrated Environmental Management of the Motagua River Basin project, funded by the United Nations Development Program (UNDP), show that in Guatemala, 66% of municipal solid waste is not collected, and there is no guarantee that the remaining 34% is disposed of properly. Furthermore, of all landfills nationwide, 88.32% are illegal or lack municipal authorization.
In other words, the core issues that need to be addressed are the mismanagement of solid waste and water resources in Guatemala; noncompliance with existing regulations on wastewater discharge and the disposal and treatment of solid waste and residues; and the lack of a water law.
The Poqomam Maya people's quest for justice
The rivers of Santa Cruz Chinautla, a community of the Poqomam Maya people located just twelve kilometers from Guatemala City, have become conduits of pollution that are degrading the Motagua River.
For decades, the local population has seen its health and livelihoods—including pottery, one of the main economic activities and a source of identity—damaged due to the lack of waste management in the municipality of Chinautla and the urban area of the country’s capital, as well as the activities of sand-mining companies.
Photo: Mario Winter.
Voices for the Motagua River: Olga Vázquez.
Voices for the Motagua River: Nazario Pascual.
In early 2000, the Maya community organized to stop sand mining on their territory. At that time, the companies held mining permits that remained valid through 2021 and 2022. And although the permits expired, some companies continued to operate after requesting extensions. In June 2022, the indigenous authorities of the Poqomam people began a sit-in protest in front of the Piedrinera San Luis company, which they maintained for four years.
In July 2024, the Special Rapporteur on Economic, Social, Cultural, and Environmental Rights of the IACHR visited Santa Cruz Chinautla. During his visit, traditional authorities and community members spoke about the environmental, water-related, health, economic, and cultural impacts of the pollution in their rivers.
That same year, in October, the community—with support from AIDA, the Indigenous Peoples’ Law Firm, and partner organizations—filed a lawsuit (petition for amparo) against the municipality of Chinautla over its failure to take measures to address the contamination of its rivers and soil caused by improper solid waste management and the existence of illegal landfills.
AIDA’s scientific team, together with local residents and community authorities, collected key information on illegal landfills in the area. This community science initiative supported the litigation by highlighting the severity of the pollution, demonstrating the ongoing use of such practices, and providing evidence of the municipal authorities’ failure to fulfill their legal obligations regarding waste management.
Learn more about this community science initiative.
In June 2025, the Poqomam community won the support of the Guatemalan justice system when a constitutional court ordered the municipality of Chinautla to effectively address the claims in the lawsuit aimed at stopping the pollution of the rivers and soil in Santa Cruz Chinautla.
This is the first time a Guatemalan court has recognized a community's right to a healthy environment and its central role in finding solutions.
Find out the details of the legal victory.
Current situation
Since the ruling was issued, the municipality of Chinautla has held a series of “technical working groups” with representatives from the central government, civil society, and the community. A smaller group of technical experts was later created to develop a work plan with clear goals. Several months have passed without the municipality convening these working groups.
Furthermore, in December 2025, the IACHR noted in its report Human Rights Situation in Guatemala that the Motagua River basin is facing a severe pollution crisis that has had profound impacts on biodiversity and has resulted in systematic violations of the human rights of local communities, including the Maya Poqomam people.
And in May 2026, the Ministry of the Environment and Natural Resources revoked the license of the sand mining company Piedrinera San Luis for "failure to comply with environmental commitments."
AIDA continues to monitor the implementation of the court ruling to ensure the right to a healthy environment for the Poqomam Maya community and all those living in the Motagua River basin. Meanwhile, the residents of Santa Cruz Chinautla remain organized and mobilized to improve their environment and defend their rights.
Related projects
Protecting Wetlands: A Ramsar Infographic
Wetlands worldwide are at threat due to changes in land use, pollution and unsustainable development. The Ramsar Convention is an intergovernmental treaty that works to protect wetlands across international borders, and advocates for their wise use. This infographic breaks down why wetlands are so important, and how the application of the Ramsar Convention can help us protect these sensitive and vital ecosystems.
Read more
How supporting women is linked to environmental justice
Although women lead struggles for the conservation of nature around the world, they are often excluded from decisions about the use of land, water and other natural resources. They’re disproportionately affected when inadequately implemented projects pollute air and water, or cause forced displacements and other damages. And they’re often more seriously impacted by climate change. In all of these cases, women—particularly indigenous women—are highly vulnerable to losing their way of life, their income, and their homes. At AIDA, we incorporate a gender perspective into our defense of the environment and human rights, recognizing that combating inequalities and differentiated harms is fundamental to achieving environmental justice in Latin America. “The gender approach allows us to defend the rights of women in an integral way, understanding that the risks and harms, as well as the policies needed to confront them, are different for men and women,” explained Senior Attorney Liliana Ávila. “Making this visible helps break through discrimination scenarios and effectively guarantee the right to equality.” Uplifting women’s voices Working with a gender focus, Liliana explained, has been a fascinating professional experience that has allowed her to understand how environmental damage affects men and women differently. She has listened to women explain how they view their territory, and what happens to it, distinctly from the men in their communities. In Northwest Guatemala, in the micro-region of Ixquisis, the construction of the Pojom II and San Andrés dams has damaged water sources. It has spread diseases and harmed fishing and agriculture, subsistence activities for local communities, largely made up of indigenous Mayan women. “It’s necessary to promote methodologies and spaces that make women’s voices heard, that enable and strengthen their participation, that demonstrate the differentiated harms they face, and that promote change to guarantee their rights,” Liliana said. AIDA legally supports the resistance of the women of Ixquisis to the dam projects, both in national courts and before the Inter-American Development Bank, which finances the projects despite obvious conflict with its operating policies. Our work in Guatemala is possible thanks to the Global Alliance for Green and Gender Action (GAGGA), which supports collaboration between movements and grassroots organizations to strengthen their role in the defense and promotion of women's rights and environmental justice. Since 2016, GAGGA has provided funds to women's movements and environmental organizations at the national, regional and global levels in more than 30 countries across Latin America, Africa, Asia and Europe. Women’s role in environmental defense By working hand in hand with communities across Latin America, AIDA attorneys have a close knowledge of the fundamental role that women play in protecting the environment and building equitable societies. “In Nayarit, Mexico indigenous women are playing a key role in defense of their land, water and the San Pedro Mezquital River,” said Camilo Thompson, AIDA attorney in Mexico. “And in the Gulf of California, women are leading efforts toward proper fisheries management.” Claudia Velarde, an AIDA attorney in Bolivia, says that her country has recognized that peasant women produce more food, so their experiences, visions, and knowledge must be incorporated into public food policies. “Personally, it has been very enriching for me to work both with and from the perspective of women,” she explained. “I’ve have had the opportunity to meet incredible women fighting to defend their territories from extractive activities like fracking. It’s helped me understand that the impacts of a single activity are experienced quite differently according to socially assigned gender roles.”
Read more
Mine tailings dams: a history of failures
Once again, tragedy looms over Brazil. Last Friday, for the second time in less than four years, a tailings dam broke in the State of Minas Gerais—this time in the municipality of Brumadinho—leaving catastrophic human and environmental damage in its wake. Once again, the losses are incalculable. We’re faced with disappearances and death. We see the same, disconcerting images: survivors evacuated by helicopter; trees, animals, and homes covered in toxic sludge; a swollen river carrying mining waste downstream. Once again, nature and society have been damaged, torn apart. As if in an endless loop, the tragedy has repeated in Minas Gerais. Five similar incidents, at least of which there is evidence, occurred in 1986, 2001, 2007, 2014, and 2015. The tragedy in November 2015 in the city of Mariana is considered the worst environmental disaster in the history of Brazil. It destroyed the town of Bento Rodrigues and contaminated the Doce River basin, carrying toxic sludge all the way to the Atlantic Ocean. A tragic cycle Far from isolated events, the failures of mine tailings dams have become a common occurrence, and statistics suggest we can expect many more in the future. Like any infrastructure work, a dam has a certain useful life—a period of operation with a firm beginning and end. That period is based on the dam having adequate design, execution, and maintenance, something that often does not occur. Thanks to the World Information Service on Energy’s Uranium Project, we know that over the last 30 years there have been 73 accidents or incidents involving mine tailings dams worldwide. The United States (17), China (8) and the Philippines (7) lead the list of affected countries. The project’s database offers an account of the main accidents and indicators including breakdowns, overshoots, collapses, partial failures, and lining ruptures. These figures should lead us to reflect on large-scale mining, particularly metal mining, which requires these types of dams and impoundments. Instead of continuing to build mines, wouldn’t it be better to concentrate our efforts on recovering and reusing the metal we discard? When will we transition to a circular economy that avoids such catastrophes? How many more disasters can our ecosystems and our human populations endure? Quite often, affected communities do not have objective or sufficient information about the benefits and harms of the mining projects proposed near their homes. Breaking that information gap is urgent. At AIDA we contribute to this task by providing useful information about the potential harms of mining, and using it to strengthen legal actions undertaken to protect people and the environment. It’s urgent that the governmental, non-governmental and private sectors do whatever is necessary to avoid more tragedies like those we’ve seen in Brazil. They must make a conscious decision to put the value of people and nature above profit. For more information, consult the database of major tailings dam failures: http://www.wise-uranium.org/mdaf.html 73 tailings dams have failed over the last 30 years, wreaking havoc on the environment and affected communities: https://t.co/G6xZibNIAk How many more avoidable disasters can we endure? #MinasGerais #BrumadinhoSOS #ValeAssassina #mining pic.twitter.com/ceuNTUUpkL — AIDA Americas (@AIDAorg) January 28, 2019
Read more