Data Centers and Drought

A Thirsty Digital Infrastructure

Data centers may run on electricity, but they rely heavily on water—especially for cooling. In many regions, evaporative cooling systems are favored for their energy efficiency, but they consume millions of gallons of water annually. As climate change intensifies drought conditions, the environmental cost of water use in data centers is coming under greater scrutiny.

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Understanding the Water Footprint

Cooling systems are the primary source of water consumption in data centers, particularly those that use chillers or cooling towers. Even in efficient facilities, maintaining optimal temperatures can require vast amounts of water. The full water footprint also includes indirect use, such as water used in energy generation and equipment manufacturing.

Cooling Innovation in a Hotter World

To reduce dependence on water, some data centers are shifting to alternative cooling methods. Closed-loop liquid cooling, immersion cooling, and air-based systems can drastically cut water use. In some cases, facilities are also capturing and recycling wastewater on-site. These innovations not only lower environmental impact but also provide resilience in regions facing water scarcity.

Site Selection and Climate Awareness

Water-smart data centers begin with location. Operators are increasingly factoring in regional water drought stress when choosing new sites. Building in cooler climates or areas with reliable water access reduces long-term sustainability risks. Some companies are also committing to water positivity—replenishing more water than they consume through conservation projects and partnerships.

Reporting and Accountability

As public concern grows, transparency around water use is becoming more important. Industry leaders are beginning to report water usage effectiveness (WUE) alongside PUE, showing stakeholders how water is being used, conserved, or offset. These metrics help drive accountability and encourage innovation across the sector.

The Future of Water-Wise Data Centers

In a warming world, conserving water is just as critical as conserving energy. Data centers must continue to evolve—embracing cooling technologies, smarter siting, and sustainability metrics that reflect the full scope of their environmental impact. The path forward requires not just efficiency, but a commitment to operating responsibly in an increasingly water-scarce world.

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