{"id":171607,"date":"2026-10-12T01:24:45","date_gmt":"2026-10-12T00:24:45","guid":{"rendered":"https:\/\/www.intelligentcio.com\/eu\/2026\/10\/12\/why-early-water-decisions-matter-for-long-term-data-centre-resilience\/"},"modified":"2026-10-12T01:24:46","modified_gmt":"2026-10-12T00:24:46","slug":"why-early-water-decisions-matter-for-long-term-data-centre-resilience","status":"publish","type":"post","link":"https:\/\/www.intelligentcio.com\/eu\/2026\/10\/12\/why-early-water-decisions-matter-for-long-term-data-centre-resilience\/","title":{"rendered":"Why early water decisions matter for long-term data centre resilience"},"content":{"rendered":"\n<p><em>As governments ask tougher questions about data centre water use, the pressure is on to address it earlier in development. Moorthy Palanivelu, Head of Data Centres &amp; Hydrogen Generation, EMEA, Envirogen Group, explains why site-wide water planning needs to sit alongside power, land and connectivity from the outset and how early specialist input can help operators avoid costly redesign later on.<\/em><\/p>\n\n\n\n<p>Data centre water planning has long been a core design consideration for major projects. What\u2019s changing is how early the site-wide water strategy is coming under scrutiny within the broader development process.<\/p>\n\n\n\n<p>In Scotland, new rules introduced in September 2026 mean applications for new data centres exceeding 50MW power capacity require an Environmental Impact Assessment (EIA). In Texas, authorities are also asking more detailed questions about projected water demand, supply sources, reuse and cooling technology.<\/p>\n\n\n\n<p>Across Europe, the picture is also becoming more structured. The EU reporting framework already includes total water input and Water Usage Effectiveness (WUE), and on 21 September 2026 the European Commission proposed a common EU rating scheme to make data centre energy and water use more transparent. Norway is taking a different resource-efficiency route, requiring cost-benefit analysis of excess-heat utilisation for new data centres above 2MW.<\/p>\n\n\n\n<p>These are different regulatory and policy routes, but together they reflect a wider shift. As AI-driven development accelerates globally, data centre water demand, cooling architecture, source availability, reuse and resilience are receiving greater scrutiny earlier in planning, alongside mainstream reporting and community debate.<\/p>\n\n\n\n<p>The question is not whether water matters, but whether it is understood early enough to influence key design decisions while meaningful options remain open.<\/p>\n\n\n\n<p><strong>Beyond the basics<\/strong><\/p>\n\n\n\n<p>The basics of data centre design &#8211; power capacity, land, connectivity and project delivery timelines &#8211; have historically dominated early discussions. Water is also site-specific yet has received less attention, particularly when viewed through the lens of what could be described as the new age of data centres. In practice, water demand and treatment requirements are increasingly affected by geographical location and climate, local water availability and quality, IT load and cooling architecture and the operator\u2019s resilience requirements and operating model. Headline consumption figures are not a good substitute for the water balance of a specific project. At the site-planning and design-engineering stage, the water supply position needs to be clear enough to inform:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Treatment and reuse routes<\/li>\n\n\n\n<li>Space, utilities and interfaces with wider MEP systems<\/li>\n\n\n\n<li>Discharge and contingency arrangements<\/li>\n\n\n\n<li>Whole-life cost, maintenance and future expansion<\/li>\n<\/ul>\n\n\n\n<p>Contributions by mechanical, electrical and plumbing (MEP) consultants, water utilities and, where appropriate, local authorities, might be necessary \u2013 because resolving issues early on helps to avoid costly redesign, rework and programme disruption.<\/p>\n\n\n\n<p><strong>Bringing water into the planning stage<\/strong><\/p>\n\n\n\n<p>Since September 2026, Scotland has required an Environmental Impact Assessment (EIA) for applications for new data centres exceeding 50 MW power capacity. The Scottish Government Chief Planner letter and EIA Direction reference AI-related water consumption, potential impacts on water resources and the role closed-loop cooling can play in significantly reducing the amount of water required where water is used for cooling.<\/p>\n\n\n\n<p>The Scottish Government also emphasises identifying EIA at the earliest possible stage, when mitigation can be integrated into the design. This does not prescribe a single cooling or water solution; it reinforces the value of establishing the water position before key design decisions become harder or more expensive to change.<\/p>\n\n\n\n<p><strong>American markets \u2013 acting in the same vein<\/strong><\/p>\n\n\n\n<p>In Texas, an August 2026 data centre audit directive instructed the Public Utility Commission of Texas and Electric Reliability Council of Texas (ERCOT) to obtain information &#8211; from projects progressing through ERCOT&#8217;s interconnection process &#8211; including projected annual and peak water consumption, anticipated water sources and proposed cooling technology. A follow-up in the next month told the Texas Water Development Board to enforce existing water-use reporting requirements and coordinate with ERCOT on additional data centre water information.<\/p>\n\n\n\n<p>Virginia is taking a different approach. From January 2027, amended water-withdrawal reporting requirements require certain water providers to categorise and report potable and reclaimed water supplied to data centres with Department of Environmental Quality air permits. Separate 2026 budget provisions also place water-efficiency requirements on new data centres in defined cooling water scarcity areas and the Eastern Virginia Groundwater Management Area.<\/p>\n\n\n\n<p>Although the regulatory routes differ, both focus on the same practical shift &#8211; water is being considered earlier in data centre development. That means giving greater attention to how much may be needed, where it will come from, how cooling choices affect demand and what role reuse or more water-efficient approaches could play.<\/p>\n\n\n\n<p><strong>Planning ahead<\/strong><\/p>\n\n\n\n<p>The same early-planning principle is in the Alliance for Water Efficiency&#8217;s <em>2026 Data Center Primer for Water Service Providers,<\/em> developed to help providers engage earlier in the planning and design of data centres. It highlights missed opportunities for efficiency and reuse when water providers are brought in late in the cycle. A practical early-stage checklist is helpful for establishing the site-wide water situation and should cover:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Expected average and peak water demand<\/li>\n\n\n\n<li>Cooling architecture, including liquid-cooling interfaces, and associated water-quality and filtration requirements<\/li>\n\n\n\n<li>Mains, groundwater, reclaimed water, surface water or other technically suitable source-water options, including whether rainwater harvesting or specialist surface-water treatment is appropriate<\/li>\n\n\n\n<li>Opportunities for data centre water reuse, recovery and recycling, where appropriate<\/li>\n\n\n\n<li>Opportunities to reduce feedwater demand and wastewater volumes through high-recovery water treatment or, where justified, Zero Liquid Discharge (ZLD)<\/li>\n\n\n\n<li>Discharge requirements, local water constraints and permitting considerations<\/li>\n\n\n\n<li>Source-water variability and whether pilot plant trials are needed to validate a proposed treatment or reuse route<\/li>\n\n\n\n<li>How water use, quality and treatment performance will be measured and monitored, including Water Usage Effectiveness (WUE) where relevant<\/li>\n\n\n\n<li>Contingency supply and resilience during drought, outage or source changes<\/li>\n\n\n\n<li>Future expansion and life cycle cost, not simply day-one demand<\/li>\n<\/ul>\n\n\n\n<p>All these points are interconnected. For example, a different water source might reduce reliance on potable supplies but introduce different treatment requirements. Higher recovery strategies can reduce feedwater demand or wastewater volumes but could change energy use, maintenance, residuals handling or process complexity. Cooling architecture can change both water demand and the quality required.<\/p>\n\n\n\n<p>No single water-use profile or treatment strategy will fit every data centre. That matters even more when AI infrastructure is being delivered at pace, because late changes can affect programme, cost and capacity.<\/p>\n\n\n\n<p><strong>Specialist water expertise matters early in the design process<\/strong><\/p>\n\n\n\n<p>For architectural consultants and MEPs, water is one specialist discipline among many. Managing a project requires balancing numerous complex systems, which is why deep, specialised expertise in one subject is often outsourced. Detailed expertise in source-water chemistry, treatment, reuse, discharge and life cycle performance might not sit in-house on every project.<\/p>\n\n\n\n<p>Therefore, engaging experienced water specialists early in the design process can help test assumptions, define realistic treatment and reuse routes, coordinate interfaces with cooling and wider MEP systems and reduce the risk of late redesign, mis-specified treatment or avoidable capacity constraints.<\/p>\n\n\n\n<p><strong>Look beyond day-one demand and plan for expansion<\/strong><\/p>\n\n\n\n<p>Collaboration is most valuable early on, when the wider infrastructure strategy is still being shaped. The aim is not to specify the most complex treatment or reuse strategy available, but to understand the options and trade-offs early enough for water requirements to influence key design decisions while meaningful options remain open.<\/p>\n\n\n\n<p>Scrutiny around water demand, source availability, cooling and reuse is increasing. Data centre water planning therefore needs to sit alongside other critical infrastructure decisions from the outset.<\/p>\n\n\n\n<p>The objective is simple: avoid allowing water to become a constraint only after the wider design has already been locked in.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As governments ask tougher questions about data centre water use, the pressure is on to address it earlier in development. Moorthy Palanivelu, Head of Data Centres &amp; Hydrogen Generation, EMEA, Envirogen Group, explains why site-wide water planning needs to sit alongside power, land and connectivity from the outset and how early specialist input can help [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":171608,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55,20673,497,36,1489,93],"tags":[11337,14060,26879,26880,9944],"class_list":["post-171607","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-centres","category-expert-opinion","category-government","category-green","category-insights","category-top-stories","tag-cooling","tag-design","tag-envirogen-group","tag-moorthy-palanivelu","tag-water"],"acf":[],"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/posts\/171607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/comments?post=171607"}],"version-history":[{"count":0,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/posts\/171607\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/media\/171608"}],"wp:attachment":[{"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/media?parent=171607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/categories?post=171607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.intelligentcio.com\/eu\/wp-json\/wp\/v2\/tags?post=171607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}