Ireland Data Centre Water Use Doubled During Hot Summer Months

Data centre water consumption from public supplies in Ireland surged to approximately 999 million litres last year, driven heavily by major campuses operated by firms like Meta and Equinix. According to an investigation by The Journal Investigates, cumulative public supply extraction by the sector reached at least 1.7 billion litres over a two-year window, escalating resource pressures during regional dry spells.

Here is the math. Data centre usage climbed from 752 million litres in 2024 to 999 million litres in 2025, a year-over-year increase. Despite these large volumes, infrastructure operators maintain that overall demand remains a fraction of total national consumption, even as municipal utilities enforce strict regional water conservation measures.

The Bottom Line

• Concentrated Footprint: Just two campuses—Meta’s facility in Clonee, County Meath, and Equinix’s Dublin campus—accounted for 954 million litres of the total reported public supply usage last year.
• Regulatory Reporting Thresholds: Only the largest data centres report extraction figures to the Environmental Protection Agency (EPA), meaning actual industrial consumption across the 57 identified utility sites is likely higher.
• Utility Context: State utility Uisce Éireann maintains that data centres represent less than 0.3% of total network demand, arguing that industrial cooling loads pale beside heavy commercial sectors like pharmaceuticals.

Infrastructure Concentration and Regional Strain

The geographic clustering of digital infrastructure within the Greater Dublin area has concentrated municipal resource demand. According to data provided to the EPA and analyzed by The Journal Investigates, Meta’s Clonee campus consumed 556 million litres in 2025, while Equinix utilized 398 million litres. Smaller operations run by Amazon, Google, and Microsoft accounted for the remaining 44 million litres of public supply draw, with individual facility usage typically ranging between 1 million and 4 million litres annually.

This heavy reliance on municipal water occurs against a backdrop of tight regional supplies. Uisce Éireann imposed national hosepipe bans during extended dry weather, focusing public attention on heavy commercial extractors. However, industry defenders note that absolute volumes remain dwarfed by other industrial categories. According to reporting by The Irish Independent, figures supplied by Uisce Éireann to Labour TD Ciarán Ahern indicate that 57 identified data centres utilize an average of 4.78 million litres daily across the network.

Campus / Operator	Location	2025 Public Water Use (Litres)	Percentage of Total Reported
Meta (Clonee)	County Meath	556,000,000
Equinix	Dublin	398,000,000
Other Operators (Amazon, Google, Microsoft)	Greater Dublin / Drogheda	44,000,000
Total Reported	National	999,000,000

Macroeconomic Pressures and Capital Allocation

The operational friction between municipal water conservation and expansion highlights a broader challenge for tech companies. While some campuses supplement municipal intake with harvested rainwater or recycled effluent—such as Equinix utilizing over a million litres of recycled water—the vast majority remain tethered to public mains.

Photo: europesays.com

Transparency advocates continue to push for broader mandatory disclosures, arguing that lobbying efforts from tech companies have historically meant that there is limited environmental information on the impact of data centres publicly available.

Disclaimer: The information provided in this article is for educational and informational purposes only and does not constitute financial advice.