Introduction
A heatwave has struck Johor, a region in southern Malaysia where the land has turned into a concrete slab under a cloudless sky. The air hangs heavy like an iron cloak, and data centers, those silicon bunkers that today generate 37% of global digital traffic, are experiencing a new kind of suffering: a lack of water. Not for drinking, not for washing, but for cooling processors. A water-cooling system has been shut down by the local government, which has ordered investors to wait until 2027 before expanding cooling capacity. The order was signed on November 18, 2025, and it is not an isolated incident, but a symptom of a water crisis that is reshaping the geography of the digital world.
The city of Johor Bahru, home to a rapidly growing technology hub, has reached the limit of its groundwater usage. Pumps extract water from 150 meters deep, but the aquifer is being depleted at a rate of 1.2 meters per year. Data centers, which consume up to 200 liters per second per server, can no longer rely on an unlimited supply. The government has calculated that expanding water-based refrigeration would increase local water consumption by 22% by 2028, an unsustainable escalation. This is not a matter of environmental policy, but of a physical water balance: every liter consumed by a server is one liter less for rice cultivation, for plastic production, for human life.
This means that the logic of the digital world is no longer just technological, but physical. The system cannot grow without a water infrastructure capable of supporting it. The unseen factor is the tension between the demand for electricity and the availability of water. This implies that strategic decisions are no longer made during the design phase, but during operational management, when the system is forced to choose between a server that overheats and a rice field that dries up.
The Refrigeration Node
The water-based cooling system is a critical node, but it is not an option. It is a physical architecture based on a heat transfer chain: water absorbs heat generated by the chips, transports it through stainless steel pipes, and expels it in evaporative towers. Each 10 megawatt power plant requires approximately 1,000 liters of clean water per minute. This water is not completely recycled: some evaporates, and some is lost due to hydraulic leaks. The average loss is 12%, and in drought conditions, this means that for every 100 liters extracted, only 88 are returned to the cycle.
The problem is not the cooling itself, but the source. In Johor, water comes from two main sources: groundwater and artificial reservoirs. The reservoirs, built in the 1980s, were designed for a maximum population of 1.5 million people. Today, they serve over 2.3 million, with an annual growth rate of 3.4%. The groundwater, in turn, is exploited beyond the natural recharge limit, which is 180 million cubic meters per year. The current extraction is 230 million. This creates a structural water deficit of 50 million cubic meters per year, which accumulates in the underground like an invisible void.
The repair time for a water-based cooling system is 48 hours in case of compressor failure, but 7 days if it is a leak in the closed circuit. In a drought context, a failure is not only a technical problem, but an operational risk. This data reveals a structural dynamic: the system’s recovery capacity is lower than the frequency of incidents. Consequently, each capacity expansion must be evaluated not only in terms of cost, but also in terms of water vulnerability.
Who Pays and Who Benefits
The local industrial sector bears the cost. Companies that rely on digital technologies, such as those managing logistics or production process control, experience an average increase of 18% in response times when servers are subjected to thermal stress. This translates to an average delay of 1.2 seconds in data flows, resulting in an additional cost of $1.7 per transaction. For a company processing 10 million transactions per day, this represents an additional cost of $17 million per year.
The mining sector benefits. The data center project in Johor was designed to be powered by a natural gas-fired power generation unit, but the cost of natural gas has increased by 41% since 2024. In parallel, the mining project in Kazakhstan, funded by the children of Donald Trump, received a $1.1 billion investment for the development of two tungsten deposits. The project is authorized to operate with an electricity consumption of 800 megawatts, but lacks access to a stable water source. The solution adopted was to build a 28-kilometer pipeline network to bring water from a basin located 45 kilometers away. The construction cost is $23 million, and the completion time is 14 months.
This reveals a dynamic of cost transfer: the industrial investor in Malaysia pays for the water scarcity, while the mining investor in Kazakhstan pays for the construction of water infrastructure. This implies that the value is no longer in the data itself, but in the ability to transfer the cost to another node in the system. The system is no longer a network of flows, but a network of cost transfers.
Shutdown
The system stops functioning reliably when the cooling node fails to maintain a temperature below 35 degrees Celsius. At that point, the servers overheat, processes freeze, and the data flow is interrupted. This is not a software issue, but a physical limitation. Water is no longer a resource, but a constraint. The operational mechanism has transformed from a support system to a control system.
I observe two indicators: the first is the groundwater usage rate in Johor, which must remain below 75% of the natural recharge limit. The second is the average repair time for water-cooled systems in Central Asia, which must be less than 36 hours. When both exceed the critical values, the system enters a collapse phase. The paradox is not that we invest in critical infrastructure without water, but that we continue to do so, knowing that the constraint is physical, not political.
Photo by Đào Hiếu on Unsplash
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