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Environment
May 29, 2026
Analyzed by GPT OSS 120B

Chile’s Data‑Centre Boom Drains Wetlands Amid Mega‑Drought

AI Summary
The rapid expansion of data‑centres around Santiago’s Quilicura wetland is siphoning billions of litres of water, turning one of Chile’s largest swamps into a dry plain. Activists warn that the water‑intensive cooling systems exacerbate a 15‑year mega‑drought and raise questions about the sustainability of Chile’s tech‑hub ambitions.

A rapid expansion of data‑centres around Santiago’s Quilicura wetland is siphoning billions of litres of water, turning one of Chile’s largest swamps into a dry plain and intensifying a 15‑year mega‑drought.

The Wetland’s Vanishing: On‑the‑Ground Observations in Quilicura

Rodrigo Vallejos, a final‑year law student, first noticed the change five years ago when the once‑lush Quilicura wetland – spanning 468.4 hectares (about 1,200 acres) – began to dry out. He now works with the activist group Resistencia Socioambiental de Quilicura, documenting how the area, once a key urban biodiversity zone, is turning into “a wetland without water.”

Water Consumption Numbers: Billions of Litres Drained Annually

Experts estimate that the largest data‑centres in the district – operated by Google, Microsoft, Brazilian Ascenty and Chilean Sonda – consume roughly 1.5 bn litres of water each year. The scale is illustrated by the following figures:

  • 33 data‑centres are currently operating, with 34 more planned.
  • Google’s water rights allow extraction of up to 50 litres per second, equivalent to the annual use of 8,500 Chilean households.
  • Water‑based cooling systems dominate, using far more water than air‑cooled alternatives.

Ecological and Social Fallout: Why Chile’s Tech Push Risks a Mega‑Drought Crisis

The water draw aggravates a national mega‑drought that has persisted for over 15 years. Climate scientist Pablo Sarricolea warns that by 2070 precipitation could fall sharply while average temperatures rise from 15.6 °C to 17.4 °C, increasing evaporation and further stressing water supplies. Residents also point to limited job creation and the lack of transparent reporting on water extraction.

Company statements differ: Microsoft claims its Chilean sites rely on air‑based cooling, reducing water use, while Ascenty argues its water consumption equals that of only 16 households. Nonetheless, activists argue that prioritising water for tech firms over local communities raises ethical concerns.

Looking Ahead: Relocation, Regulation, and the Future of Chile’s Data‑Centre Strategy

Chile’s national data‑centre plan, launched under former President Gabriel Boric, aims to position the country as Latin America’s tech hub. Experts suggest a shift to water‑rich southern regions to balance growth with ecological limits. Stronger industry regulation, transparent water‑use reporting, and investment in air‑cooled or renewable‑energy‑based cooling could mitigate the crisis.

Without such measures, the Quilicura wetland may become a stark symbol of how unchecked digital infrastructure can deepen climate vulnerability in already water‑scarce regions.