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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.
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Open Letter from Civil Society Organizations to the President of the Inter-American Development Bank
The undersigned group of civil society organizations greet you as you begin your term as President of the Inter-American Development Bank. We extend to you our best wishes as you assume this task of great responsibility for the people of Latin America and the Caribbean.We take this opportunity to introduce ourselves and express our willingness to continue contributing to the Bank's actions pursuing the region's development. Since 2017, our organizations have been monitoring and making recommendations on the IDB policies and projects, in partnership with local communities and populations. In particular, we promote the Bank’s establishment of better social and environmental policies and practices, as well as adequate and transparent spaces for participation that allow improving the IDB's link and interaction with civil society. To mention just a few examples, we highlight our contributions to the Environmental and Social Policy Framework (ESPF), to the updates of the MICI policy and in the accompaniment of specific cases, and in the revision process of the Access to Information Policy and in the dialogues on the IDB-Amazon Initiative.In conjunction, we are permanently monitoring the Bank's policies and investments throughout the region, including in projects involved in the response to and recovery from the Covid pandemic and many others.We consider it essential that the Bank strengthen its practices and operations, facilitating the promotion and respect for human rights, with special attention paid to the needs of communities and indigenous peoples who are at the forefront in the defense of nature, as well as the protection of key ecosystems in the fight against climate change.Given the relevance of public participation in promoting full development, we reiterate our request to the Bank to generate constructive and lasting participation mechanisms. In particular, we request that the space for dialogue with civil society be reopened in the framework of the next IDB Annual Meetings. This space was a traditional practice that was interrupted in 2014 and has not been resumed to date.We understand that a space for IDB articulation with civil society (social organizations and movements, Indigenous groups, and others who are affected) is not only a good practice that other multilateral agencies are already implementing, but would also contribute to advance the objectives of your administration. As stated in your inaugural speech last January, you stressed your desire to "seize all opportunities for dialogue" and collaborate with different actors to address the most pressing problems of our region.Thus, your administration has an historic opportunity to generate greater openness towards civil society organizations and communities potentially affected by Bank-financed operations. We believe that this demand can no longer be postponed, and that this long-standing claim must be addressed in order to strengthen the work together with the peoples of the region.We remain at your disposal to discuss the points raised in this letter and other matters of common interest at your convenience. Kind regards, Accountability CounselAMATE El SalvadorArticulación Salvadoreña de Sociedad Salvadoreña de Sociedad Civil para la Incidencia en las Instituciones Financieras Internacionales (ASIFI)Asociación Ambiente y Sociedad (Environment and Society Association)Interamerican Association for the Defense of the Environment (AIDA)International Accountability ProjectBank Information CenterCenter for International Environmental Law (CIEL)Coalition for Human Rights In DevelopmentCohesión Comunitaria e Innovación Social A.C. (Mexico)Conectas Direitos HumanosDerecho, Ambiente y Recursos Naturales (DAR, Perú)Ecoa - Ecology and ActionFoundation for the Development of Sustainable Policies (Fundeps)CAUCE Foundation: Environmental Culture - Causa Ecologista (Argentina)Gender ActionInternational RiversMesa de Discapacidad y Derechos (Perú)International Platform against ImpunityProtection International MesoamericaSociedad y Discapacidad - SODIS (Perú)Sustentarse (Chile)Wetlands International / Fundacion Humedales (Argentina) Read and download the letter
Read moreOpen Letter from Civil Society Organizations to the President of the Inter-American Development Bank
The undersigned group of civil society organizations greet you as you begin your term as President of the Inter-American Development Bank. We extend to you our best wishes as you assume this task of great responsibility for the people of Latin America and the Caribbean.We take this opportunity to introduce ourselves and express our willingness to continue contributing to the Bank's actions pursuing the region's development. Since 2017, our organizations have been monitoring and making recommendations on the IDB policies and projects, in partnership with local communities and populations. In particular, we promote the Bank’s establishment of better social and environmental policies and practices, as well as adequate and transparent spaces for participation that allow improving the IDB's link and interaction with civil society. To mention just a few examples, we highlight our contributions to the Environmental and Social Policy Framework (ESPF), to the updates of the MICI policy and in the accompaniment of specific cases, and in the revision process of the Access to Information Policy and in the dialogues on the IDB-Amazon Initiative.In conjunction, we are permanently monitoring the Bank's policies and investments throughout the region, including in projects involved in the response to and recovery from the Covid pandemic and many others.We consider it essential that the Bank strengthen its practices and operations, facilitating the promotion and respect for human rights, with special attention paid to the needs of communities and indigenous peoples who are at the forefront in the defense of nature, as well as the protection of key ecosystems in the fight against climate change.Given the relevance of public participation in promoting full development, we reiterate our request to the Bank to generate constructive and lasting participation mechanisms. In particular, we request that the space for dialogue with civil society be reopened in the framework of the next IDB Annual Meetings. This space was a traditional practice that was interrupted in 2014 and has not been resumed to date.We understand that a space for IDB articulation with civil society (social organizations and movements, Indigenous groups, and others who are affected) is not only a good practice that other multilateral agencies are already implementing, but would also contribute to advance the objectives of your administration. As stated in your inaugural speech last January, you stressed your desire to "seize all opportunities for dialogue" and collaborate with different actors to address the most pressing problems of our region.Thus, your administration has an historic opportunity to generate greater openness towards civil society organizations and communities potentially affected by Bank-financed operations. We believe that this demand can no longer be postponed, and that this long-standing claim must be addressed in order to strengthen the work together with the peoples of the region.We remain at your disposal to discuss the points raised in this letter and other matters of common interest at your convenience. Kind regards, Accountability CounselAMATE El SalvadorArticulación Salvadoreña de Sociedad Salvadoreña de Sociedad Civil para la Incidencia en las Instituciones Financieras Internacionales (ASIFI)Asociación Ambiente y Sociedad (Environment and Society Association)Interamerican Association for the Defense of the Environment (AIDA)International Accountability ProjectBank Information CenterCenter for International Environmental Law (CIEL)Coalition for Human Rights In DevelopmentCohesión Comunitaria e Innovación Social A.C. (Mexico)Conectas Direitos HumanosDerecho, Ambiente y Recursos Naturales (DAR, Perú)Ecoa - Ecology and ActionFoundation for the Development of Sustainable Policies (Fundeps)CAUCE Foundation: Environmental Culture - Causa Ecologista (Argentina)Gender ActionInternational RiversMesa de Discapacidad y Derechos (Perú)International Platform against ImpunityProtection International MesoamericaSociedad y Discapacidad - SODIS (Perú)Sustentarse (Chile)Wetlands International / Fundacion Humedales (Argentina) Read and download the letter
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