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How Much Water Do Data Centres Use in the UK?
As the United Kingdom pushes forward with artificial intelligence, cloud computing, and digital infrastructure, increasing attention is being paid to the environmental impact of data centres. While electricity consumption often dominates the discussion, water usage is becoming an equally important concern.
Data centres house thousands of servers that operate around the clock. These servers generate significant amounts of heat and must be cooled continuously to prevent equipment failure. Many facilities achieve this through sophisticated cooling systems that use water.
Recent industry reports estimate that commercial data centres in England consume approximately 1.9 million cubic metres of water each year, equivalent to around 1.9 billion litres. Although this represents less than 1% of total non-household water consumption nationally, experts warn that the impact can be much greater in specific regions where data centres are heavily concentrated.
The South East of England is a particular area of concern. According to government and industry analysis, around 83% of England’s data centre water consumption occurs in already water-stressed regions of the South East. Water use by data centres in these areas has increased dramatically since 2021 as demand for cloud services and AI technologies has surged.
However, the industry argues that many modern facilities are becoming more water efficient. A survey conducted in collaboration with the Environment Agency found that more than half of surveyed data centres now use waterless cooling technologies. Around 64% of facilities use less than 10,000 cubic metres of water annually, a level comparable to or lower than that of a typical leisure centre.
The rapid growth of artificial intelligence is expected to increase demand further. Researchers from the United Nations have warned that global data centre water consumption could double by 2030 if current trends continue. As AI systems require greater computing power, cooling demands are also expected to rise.
Environmental campaigners argue that greater transparency is needed. They want operators to publicly disclose their water consumption and invest in technologies that recycle water or use alternative cooling methods. Some companies are already adopting closed-loop cooling systems that reuse water rather than constantly drawing fresh supplies.
As Britain continues to expand its digital economy, the challenge will be balancing technological growth with responsible management of vital resources. While data centres currently use a relatively small share of the nation’s water supply, their growing presence means that water efficiency will become an increasingly important issue for policymakers, businesses, and local communities alike.
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Article written and configured by Christopher Stanley
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