Mexican aquifers, a vital source that sustains almost 40% of the water used in the country, are facing a silent crisis. Overexploitation, contamination, and climate change are putting these underground reservoirs at risk, essential for urban life, rural areas, and productive sectors.
Mexico has 653 aquifers distributed throughout its territory, but 245 are already in a critical state. Their deterioration not only threatens the supply of drinking water but also causes land subsidence, loss of biodiversity, and environmental degradation.
The increasing pressure on these aquifers is largely due to intensive water use for agriculture and industry. In arid regions, aquifers have become the only reliable source of supply, but their natural recharge is not enough to compensate for the extraction rate.
Faced with this situation, a proposal to reform the National Water Law has been presented, aiming to strengthen the protection and recovery of aquifers, as well as promote a more rational and sustainable use of the water resource.
The Ecological Role of Aquifers: Guardians of Natural Balance
Beyond being underground reservoirs, aquifers fulfill essential ecological functions. They act as regulators of the hydrological cycle, storing water during wet seasons and releasing it slowly during dry periods. This balance sustains rivers, wetlands, and ecosystems that depend on constant water flows.
Additionally, aquifers help maintain soil temperature and moisture, promoting vegetation growth and reducing the risk of desertification. In areas where vegetation cover has decreased, their degradation accelerates the loss of fertile soils and erosion.
When these systems are contaminated, the effects are long-lasting. Heavy metals, fertilizers, and industrial waste can remain trapped for decades, altering water quality and affecting both ecosystems and human populations. Restoring a damaged aquifer can take generations.
Protecting recharge areas is therefore an ecological priority. These areas—usually forests, grasslands, and wetlands—allow rainwater to infiltrate the subsoil and regenerate the deposits. Deforestation or urbanization interrupts this vital cycle.
Protecting Aquifers to Protect Life
The legislative initiative proposes to identify and delimit natural recharge areas, promote the infiltration of rainwater and treated waters, and impose severe sanctions on those who contaminate aquifers. The goal is to reverse decades of uncontrolled extraction and lack of monitoring.
Likewise, it is proposed to strengthen control over extraction wells and promote more efficient irrigation technologies. In states like Guanajuato, Baja California, and Mexico City, water levels are decreasing year after year without signs of recovery.
The depletion of aquifers not only jeopardizes access to drinking water but also agricultural production and the economic stability of entire communities. The loss of this resource affects food security and compromises the sustainable development of the country.
Towards Better Management
Mexico’s water crisis is also an opportunity to rethink the water management model. Protecting aquifers involves combining science, regulation, environmental education, and citizen participation.
Taking care of what is not seen—the underground reserves that give life to the territory—is an urgent task. In a country facing more intense droughts and increasing water demands, aquifers are the last natural defense against water collapse.
Ensuring their recovery is not only an environmental measure but a survival strategy. Because without healthy aquifers, the future of Mexico—its agriculture, biodiversity, and people—will literally be left without water under their feet.
