A United Nations expert has issued a stark warning, declaring that Mexico is grappling with a severe "toxic crisis" and has effectively become a "garbage sink" for the United States. This alarming situation exposes Mexican communities to dangerous pollutants, threatening their fundamental right to healthy lives.
Lax Standards and Accumulating Pollution
Marcos Orellana, the UN special rapporteur on toxics and human rights, conducted an 11-day investigative mission in Mexico. He found that weak environmental regulations and insufficient oversight have allowed pollution to build up over many years. "Where standards are weak, what you get is legalized pollution," Orellana stated, emphasizing that imports of hazardous and plastic waste from the US are exacerbating the problem.
Sacrifice Zones and Health Impacts
The rapporteur highlighted that Mexico's National Inventory of Contaminated Sites lists over 1,000 locations, many of which have turned into "sacrifice zones." In these areas, diseases like cancer and medical events such as miscarriages have become normalized. Orellana cited specific examples, including factories dumping hazardous waste into the Atoyac River in Puebla, industrial pig farms contaminating drinking water on the Yucatan Peninsula, and a decade-old mining chemical spill from 2014 that continues to affect health around the Sonora River. This spill involved 40,000 cubic meters of sulfuric acid leaking from a copper mine.
"As I heard during one meeting: living in a sacrifice zone means losing the right to die of old age," Orellana wrote in his preliminary report. He visited the industrial corridor of Tula in Hidalgo, where steel plants, cement factories, and petrochemical facilities operate near a river polluted by industrial waste and untreated sewage from Mexico City. Proposals to bring in additional waste for recycling would only worsen the environmental burden on these communities.
Plastic Waste and Regulatory Gaps
Orellana pointed to the influx of plastic waste from the United States, noting that once it crosses the border, there is often little clarity about its final destination. He expressed concern that microscopic plastic particles have been detected in rivers such as the Tecate in Baja California, the Atoyac in Puebla, and the Jamapa in Veracruz. Government records show the US ships hundreds of thousands of tons of hazardous waste to Mexico annually, including lead-acid car batteries, as well as common scrap like plastic, paper, and metal for recycling. Environmental groups question whether Mexico is equipped to handle this without causing further pollution.
Community Voices and Health Struggles
Residents in Monterrey, a US manufacturing hub with some of the worst air pollution in North America, welcomed the rapporteur's calls for more attention to public health. María Enríquez, a mother and activist who co-founded the environmental group Comité Ecológico Integral, warned that poor air quality has become a daily reality, leading to rhinitis, eye irritation, and asthma attacks. "We have learned to live sick, especially with respiratory illnesses," she said.
Guadalupe Rodríguez, director of a network of childcare centers in Monterrey, agreed, noting that children in her program are also affected. "Families consider it normal for children to have constant coughing," Rodríguez stated. She urged the government to enforce Mexico's constitutional guarantee of a healthy living environment, especially for the most vulnerable. "If they are not protected, the right to health is not being guaranteed."
Government Response and Future Measures
The rapporteur's visit, invited by the Mexican government, comes as toxic and hazardous waste face increasing scrutiny. Officials in President Claudia Sheinbaum's administration have acknowledged that regulatory standards, such as pollution emission rules, are outdated and have announced plans to strengthen them. Mariana Boy Tamborrell, Mexico's federal attorney for environmental protection, said her agency has reached a regulatory "turning point" and will start requiring industries to remediate environmental damage. A new air monitoring system is being rolled out in Monterrey to detect emissions from specific facilities.
Orellana suggested that Mexico could adopt restrictions on hazardous waste imports to address part of the crisis, noting that some countries ban such imports to avoid becoming international waste destinations. Mexican Senator Waldo Fernández has introduced legislation to more strictly regulate waste imports for recycling, prohibiting them if they have greater environmental impacts in Mexico than allowed in their country of origin. "Mexico must not become a dumping ground for toxic waste or a recipient of pollution under commercial pressures," Fernández said.
The rapporteur also highlighted that the upcoming review of the free trade agreement between Mexico, the US, and Canada represents an opportunity to strengthen environmental standards and enforcement. If not addressed, "economic pressure will worsen the toxic crisis," he warned.
