A joint investigation has found dangerously high levels of lead, arsenic and cadmium in homes and schools near a Monterrey-area plant that processes hazardous waste from the U.S., raising fears of severe health impacts for residents.
Erin McCormick and Verónica García de León report for The Guardian.
In short:
- Tests around the Zinc Nacional plant showed indoor lead levels up to 1,760 times higher than U.S. action levels and widespread contamination with arsenic and cadmium.
- U.S. steelmakers export hundreds of thousands of tons of hazardous dust to the plant, where zinc is extracted, emitting pollutants into nearby communities.
- Residents report rising health issues and environmental experts criticize weak Mexican regulations and limited government oversight.
Key quote:
"We have a toxic cocktail here."
— Martín Soto Jiménez, toxicology researcher at the Universidad Nacional Autónoma de México
Why this matters:
Lead, arsenic and cadmium are linked to cancer, neurological damage and respiratory issues, especially in children. The practice of exporting hazardous waste to countries with weaker regulations raises ethical and public health concerns about environmental justice and industrial pollution.
Related: Mexico’s Atoyac River suffers pollution crisis from nearby industries
