The Hassyan plant in Dubai produces desalted water at $0.37 per cubic meter as part of an IWP offer of 180 MIGD. This technical achievement masks an asymmetry that deepens each year: Gulf States hold approximately 60% of global desalination capacity and produce approximately 40% of its volume, while the World Bank documents severe overexploitation of groundwater without attributing a uniform decline of one to two meters per year across the entire region. Technology has solved part of the problem; the other part worsens for lack of governance.
The Essentials
- Innovation in Gulf desalination is real and measurable: Hassyan produces at $0.37/m³ thanks to next-generation reverse osmosis membranes, compared to $1.00/m³ in London.
- Agriculture represents 70 to 90% of freshwater withdrawals in the region, and remains almost entirely fed by non-renewable fossil aquifers (World Bank, Fresh Perspectives 2025).
- Interior aquifers decline by one to two meters per year without systematic counting or cross-border sharing treaties.
- Coastal desalination and interior depletion advance in parallel: one does not irrigate the other, due to lack of infrastructure and sectoral sharing rules.
- The institutional question—who decides what, when, and with what authority—remains without credible regional answer at this stage.
Hassyan, Symbol of Partial Success
Hassyan was expected to begin operating in 2026 and gradually reach 818,000 cubic meters of water per day by 2027 for the Dubai metropolitan area; it ranks among the largest reverse osmosis desalination facilities, though its position as global number one is not established. The announced production cost reflects the falling desalination costs driven by technological progress, economies of scale, and project financing conditions. Reverse osmosis and energy recovery technologies have significantly reduced the energy and cost of desalination over several decades, though a universal figure of 60% over twenty years is not confirmed.
Desalination costs once reserved this technology for the wealthiest oil economies. Several Gulf facilities now cross the one-dollar-per-cubic-meter threshold, opening the technology to less financially endowed markets. Gulf States hold approximately 60% of global capacity; their dominant role results notably from long-standing investments in desalination in the face of extreme freshwater scarcity. This industrial gamble, undertaken some thirty years ago, has paid off.
The challenge is now different. Producing low-cost water on the coast is insufficient to secure regional food systems. Water flowing from Hassyan supplies taps in Dubai and its immediate surroundings. Its transfer to interior agricultural zones remains limited by infrastructure, energy, costs, and sectoral trade-offs.
Agriculture Pumps Where Desalination Cannot Reach
Agriculture represents a very large share of freshwater withdrawals in many Middle Eastern and North African countries, according to FAO/AQUASTAT data cited by the World Bank. In a region receiving less than 200 millimeters of annual precipitation in its interior zones, part of agriculture depends on overexploited aquifers, some fossil aquifers with virtually no recharge; other aquifers receive natural or managed recharge.
The Arabian Peninsula aquifer, known as the Saudi Arabia aquifer system, is largely fossil. Its water dates from several tens of thousands of years ago, formed during humid climate periods now past. Pumping these reserves amounts to extracting a finite stock, exactly like oil. The difference is that no market sets a price on this depletion, and measurements and data are incomplete, heterogeneous, and insufficiently harmonized at the regional scale, despite the existence of counting and monitoring instruments.
Declines in aquifer levels observed in several zones of the region are not uniform. Some basins empty faster depending on crop intensity, initial aquifer depth, and national agricultural policy choices. What remains constant, however, is the absence of harmonized data between countries. Monitoring methods, coverage, and capacities vary greatly among states; several countries nonetheless have data and monitoring mechanisms. Jordan has more structured monitoring than others; Iran struggles to centralize data from its most fragmented agricultural provinces.
This measurement problem is not a technical detail. It conditions all possibility of regional negotiation. We do not share what we do not measure, and we do not regulate what we do not see.
The Cost of Water Says Nothing About Its Distribution
There is a simple economic logic that explains why desalination does not solve the agricultural problem. Transporting desalted water from the coast to interior zones is expensive, sometimes more expensive than the water itself. Over long distances and with significant elevation changes, pumping and infrastructure costs can substantially increase the initial price. Even at $0.37 at the production site, desalted water delivered to the interior is often expensive for low-value crops, but its agricultural viability must be assessed case by case.
This tariff distortion is documented by the FAO in its analyses on the water-food nexus for the MENA region. Irrigated agriculture benefits in several Gulf States from subsidized water prices that reflect neither the true extraction cost nor the depletion of fossil aquifers. The result is a structural incentive to over-pump, without price signals that would naturally curb demand.
Reforms exist. The United Arab Emirates introduced progressive pricing mechanisms in certain sectors starting in 2015, and Saudi Arabia reduced its wheat cultivation programs in desert areas after realizing the hydrological absurdity of the enterprise in the 2000s. These adjustments show that decision-makers understand the problem. But they remain national, often incomplete, and cross-border coordination remains unequal and often insufficient, even though certain aquifers are subject to cooperation mechanisms between neighboring countries.
Actors Moving Forward Without Coordinating
The state of affairs would be unfair if it obscured ongoing initiatives. Several governments and institutions have engaged serious programs that deserve to be named.
Jordan launched the National Water Carrier project, which provides for approximately 450 kilometers of pipelines, with pumping up to 1,100 meters elevation, associated with a desalination plant of 300 million cubic meters per year. This project, co-financed in part by international donors, illustrates exactly the type of infrastructural investment that can correct the coastal-interior asymmetry. Its cost is estimated at several billion dollars, meaning it remains out of reach for most states in the region without external financing.
Both the European Union and the World Bank have expressed interest in financing mechanisms for water resilience in the Middle East as part of their 2024-2030 cooperation programs. The United Nations Development Programme accompanies several governments in implementing agricultural water withdrawal counting systems. These fragmented initiatives have not yet found the institutional architecture that would allow them to converge.
Innovative financing models developed elsewhere offer leads. The pay-as-you-go model used in sub-Saharan Africa for off-grid water and energy access has shown that it is possible to finance distributed infrastructure in low-income contexts, an approach that is finding applications beyond its original context. Transposition to the agricultural water sector in remote interior zones is not straightforward, but it opens a path toward usage-based billing systems that would make aquifer depletion visible in operators’ accounts.
On the technological side, next-generation reverse osmosis membranes now allow for decentralized desalination units of smaller scale, which could be deployed in coastal or semi-coastal areas still poorly served. According to ORF analysis, this miniaturization is one of the most promising vectors for broadening geographic access to the technology. The movement has begun; its pace remains insufficient relative to the rate of aquifer decline.
The Absence of a Regional Treaty, an Obstacle Deeper Than Technology
The region does not have a single regional legal framework covering all transboundary waters. Europe has built its law on international watercourses since the nineteenth century. Sub-Saharan Africa has developed basin organizations for the Niger, Congo, and Zambezi. The Nile is subject to permanent, albeit contentious, negotiations that maintain institutional dialogue.
The region does not have a single framework covering all shared aquifers, but certain aquifers are governed by agreements or cooperation mechanisms. The Saq-Disi aquifer, shared between Saudi Arabia and Jordan, is covered by a bilateral Jordanian-Saudi agreement, even if its effectiveness and implementation can be questioned. The coastal aquifer of Lebanon and Palestine faces crosscutting pressures without an arbitration mechanism. The waters of the Euphrates and Tigris are subject to growing tensions between Turkey, Syria, and Iraq, without an active trilateral agreement.
This institutional gap reflects political realities that technology alone cannot resolve. Territorial conflicts, regional rivalries, and the instability of several states make water cooperation difficult to initiate. But the continued decline of aquifers creates objective pressure. As aquifers drop, extraction costs rise, wells dry up, and farmers face impossible choices. This process has a trajectory: at a certain threshold, institutional reform ceases to be an option and becomes a survival necessity for entire populations.
The World Bank and several regional organizations, including the International Renewable Energy Agency (IRENA), have begun advocating for water governance mechanisms inspired by climate agreements—that is, based on shared data, verifiable national commitments, and transparent monitoring. A Paris Agreement-type architecture applied to managing shared aquifers remains speculative, but it represents one of the most seriously discussed models in expert circles.
Coastal Success, a Lesson for Interior Reform
Hassyan’s history illustrates that massive public investment, clear objectives, and serious engineering can transform a sector’s economics in twenty years. Desalination costs have fallen sharply over several decades thanks to reverse osmosis, energy recovery, and economies of scale; a tenfold improvement is not demonstrated as a general rule since the 1990s. This trajectory rested on sustained political will and patient public capital.
Governing interior aquifers requires similar logic, but in a different domain: that of institutions and data, rather than membranes and pumps. Instruments exist. Satellite remote sensing now allows measurement of ground deformation caused by aquifer decline at regional scale, without depending on the political cooperation of each state. GRACE satellites allow estimation of total water storage variations at large scale in certain Middle Eastern regions, but do not directly and precisely measure all aquifers in the region. These data are public.
Starting from there, from shared, indisputable measurement because it comes from orbit, could constitute the entry point for a regional conversation that bilateral politics has failed to initiate. Several researchers in the World Bank’s Water Global Practice argue in this direction: create a shared factual basis before negotiating rights, to prevent discussions from deadlocking over contested figures.
Desalted water has proven that a resource’s cost can fall when the right investments are made. The question opening for the 2030-2040 decade is whether the political cost of a regional aquifer agreement will also drop fast enough, before the resource falls too low for the agreement to still have a purpose.
Sources
- Observer Research Foundation Middle East, Membrane Innovation in Desalination: Redefining Water Security in the MENA Region, 2026: https://orfme.org/expert-speak/membrane-innovation-in-desalination-redefining-water-security-in-the-mena-region/
- World Bank, Fresh Perspectives on Water Security in the Middle East and North Africa, 2025 (World Bank Water Global Practice)
- FAO, The State of Food and Agriculture: Water for Sustainable Food Systems (water-food nexus data MENA)
- NASA GRACE-FO, Groundwater Storage Anomalies, Middle East and North Africa (public satellite data, https://grace.jpl.nasa.gov)
- IRENA, Water-Energy Nexus in the Arab Region (International Renewable Energy Agency)