Without urgent action, England is heading into a water crisis of its own making. Droughts are becoming increasingly common - three of the past five years have had excessively dry periods, bringing hosepipe bans, falling crop yields and permanent environmental damage in already-stressed catchments. The Environment Agency warns that this trend will only get worse over time. Water scarcity is no longer a future risk; it is a near-term reality.
Yet at the same moment, the UK Government is accelerating the expansion of one of the most water-intensive industries in the modern economy. Through new “AI Growth Zones”, ministers are fast-tracking planning decisions, offering discounted electricity and prioritising grid access for large-scale data centres - facilities whose water demands now rival those of towns and small cities. A single mid-sized data centre can use as much water each year as several thousand UK households, while a hyperscale campus can require enough water each day to meet the needs of around 10,000 people, placing it among the largest industrial users in many local water catchments.
This expansion is unfolding with little public visibility or regulatory scrutiny of where that water comes from, or how its use is divided between direct onsite consumption and the much larger, indirect demand embedded in electricity generation. While households, farmers and local authorities are being urged to reduce use and prepare for scarcity, a highly water-intensive digital infrastructure is being actively promoted as a national priority.
This paper argues that the water footprint of AI data centres is far greater than is commonly acknowledged, and that their rapid, largely unregulated growth risks exacerbating England’s emerging water crisis.
