An alarming 83% of the cenotes monitored in Yucatán show contamination, primarily from fecal coliforms of human and animal origin. This situation is critical for the karst aquifer that supplies the region, which faces serious risk from various human activities.
Research has revealed that of the 3,100 registered cenotes, 60 have been evaluated, and contamination levels exceed those permitted for consumption. Communities such as Kinchil and Chocholá are involved, where traces of contaminants linked to pig farms have been found. Cave diver Sergio Grosjean Abimerhi emphasizes that the problems are immediate and unprecedented.
The aquifer’s geological structure, composed of highly permeable rocks, facilitates the rapid infiltration of contaminants. Urban runoff and wastewater also contribute to this crisis, leading to fecal contamination of the subsoil. Farms, often operating without adequate oversight, are identified as the primary cause of the deterioration, as evidenced by studies from Johns Hopkins University and the National Autonomous University of Mexico (UNAM), which found porcine fecal matter in several drinking water sources.
With real estate development in Mérida, the situation is worsening. Housing demand is increasing waste generation and, consequently, the pressure on the aquifer. Researchers have warned that recent studies have detected dangerous contaminants, such as cadmium and mercury, exceeding established limits. The continued institutional refusal to address this problem has left thousands of people at risk of health problems.
With the complicity of a lack of regulation and urban pressure, the key question is: how long can the aquifer withstand this before suffering irreversible damage?
Source: consultamonterrey
