A Crisis Made Visible

In March 2026, the world received a stark reminder of just how fragile water security can be in the modern Middle East. An Iranian drone strike caused material damage to a desalination facility in Bahrain—the first confirmed attack on a Gulf desalination plant during the rapidly escalating conflict between Iran and a US-Israeli coalition. The attack followed a report by Iranian Foreign Minister Abbas Araghchi that a freshwater desalination plant on Qeshm Island had itself been targeted by American forces. ^[1] What might seem to outsiders a peripheral strike on industrial infrastructure was, to Gulf residents, a direct assault on daily survival. In a region where the clouds rarely break and the rivers have long run dry, desalination plants are not simply utilities—they are lifelines. Understanding why requires a journey through millennia of scientific ingenuity, geopolitical necessity, and engineering ambition.

Ancient Intuitions, Modern Engineering

The desire to extract fresh water from the sea is as old as seafaring itself. Ancient Greek philosopher Aristotle observed in his Meteorologica that “salt water, when it turns into vapour, becomes sweet,” articulating the principle of distillation more than two thousand years before it was put to serious industrial use. ^[2] Minoan sailors working the Bronze Age Mediterranean likely practised basic evaporation techniques, and early Pacific navigators may have done the same as far back as 5,000 years ago. ^[3]

The first formal land-based desalination plant is generally traced to a site in Tunisia around 1560, though the technology remained limited in scale for centuries. ^[4] English patents for seawater distillation were granted as early as 1675, and by the 18th century, navies and colonial enterprises were investing heavily in portable desalination equipment for their ships. ^[5] The Industrial Revolution proved transformative: improvements in steam-powered evaporators dramatically expanded the feasibility of large-scale freshwater production from brine. In 1874, the world’s first large-scale solar desalination plant was constructed in the Atacama Desert of Chile, producing some 23 tons of fresh water daily to supply workers at nearby nitrate and silver mines. ^[6]

The mid-twentieth century brought the decisive technological leap. In 1957, RS Silver and A. Frankel invented multi-stage flash distillation (MSF), which uses a cascading series of pressure chambers to flash-boil seawater and collect its steam as fresh water—a process ideally suited to regions with abundant heat and energy. ^[7] The post-war oil boom in the Arabian Gulf accelerated investment in large-scale desalination, as newly wealthy states found themselves with the economic means, if not the natural hydrology, to sustain rapidly growing populations. The 1960s saw the emergence of reverse osmosis (RO), initially developed through the work of researchers including Sidney Loeb and Srinivasa Sourirajan, who pioneered semipermeable anisotropic membranes. ^[8] Reverse osmosis works by forcing pressurized saline water through a membrane that allows water molecules to pass while blocking dissolved salts and other contaminants. It proved far more energy-efficient than thermal alternatives and has since become the dominant global technology.

From an engineering standpoint, the gains have been extraordinary. In 1970, desalination required between 20 and 30 kilowatt-hours of energy to produce a single cubic meter of freshwater. By 2018, the global average had fallen to approximately 3 kWh/m³—an improvement by a factor of ten. ^[9] The cost of producing a cubic meter of desalinated seawater fell from around $1.10 in the year 2000 to roughly $0.50 in recent years. ^[10] Today, over 16,800 desalination plants operate worldwide, with global capacity exceeding 97 million cubic meters per day. ^[11]

The Gulf’s Existential Dependence

Nowhere on Earth has desalination become more existentially important than in the Gulf Cooperation Council (GCC) states—Saudi Arabia, the United Arab Emirates, Kuwait, Qatar, Bahrain, and Oman. The region’s arid climate delivers little rainfall, and its aquifers, long overdrawn, have deteriorated further in the face of climate change. Groundwater and desalinated water together account for about 90 percent of the region’s main water resources, according to the Gulf Research Center. ^[12]

The scale of the Gulf’s dependence is staggering. GCC member states collectively account for approximately 60 percent of global water desalination capacity and produce nearly 40 percent of the world’s total desalinated water output. ^[13] More than 400 desalination plants line the shores of the Arabian Gulf. In Kuwait, 90 percent of drinking water comes from desalination; in Oman, the figure is 86 percent; in Saudi Arabia, 70 percent; and in the UAE, 42 percent. ^[14] Saudi Arabia alone produces more desalinated water than any other nation on the planet.

The origins of this dependence are inseparable from the region’s oil-fueled modernization. After petroleum was discovered in the late 1930s, Gulf states faced a fundamental paradox: sudden wealth enabled rapid urbanization and population growth, but the land itself could support neither. Environmental researcher Naser Alsayed has noted that desalination was introduced precisely to resolve this tension, and that its role in enabling economic development is frequently underestimated. ^[15] Without desalination, the skylines of Dubai, Doha, and Riyadh would simply not exist.

The Vulnerability of Infrastructure

The strategic significance of desalination plants has been recognized by military planners for decades. During the 1990–1991 Gulf War, Iraqi forces deliberately destroyed the majority of Kuwait’s desalination capacity, and the resulting disruption to water supply was severe. ^[16] A 2010 CIA report warned with unusual directness that the disruption of desalination facilities across most Arab Gulf countries “could have more consequences than the loss of any industry or commodity.” ^[17]

The March 2026 attack on Bahrain’s desalination plant—reportedly cutting water supply to 30 villages—was a reminder that this vulnerability remains acute. ^[18] Hydrologist Raha Hakimdavar, a senior advisor at Georgetown University in Qatar, has noted that damage to desalination infrastructure can carry long-term agricultural consequences, as the pressures of competing water needs may divert groundwater away from domestic food production—a particularly acute risk in a region already reliant on food imports and facing the potential closure of the Strait of Hormuz. ^[19]

The severity of impact, however, varies considerably by country. Saudi Arabia’s geographic size and its additional desalination infrastructure on the Red Sea coastline provides some resilience. The UAE has invested in 45 days of strategic water storage as part of its 2036 Water Security Strategy. Smaller states—Qatar, Bahrain, Kuwait—are far more exposed, with minimal strategic reserves and extremely high dependence on a small number of facilities. As Alsayed has argued, the most immediate consequence of any attack may be psychological: the fear that clean water could suddenly disappear is, in a region already under military pressure, its own form of destabilization. ^[20]

Toward Resilience

In the near term, no alternative to desalination exists for GCC states. Hakimdavar has suggested that countries can bolster resilience through strategic storage, diversification of supply systems, and the deployment of smaller, distributed desalination plants powered by renewable energy—reducing the catastrophic risk posed by the destruction of any single large facility. ^[21]

Longer-term solutions will require regional coordination that has so far proven elusive. The GCC Unified Water Strategy 2035 called for all member states to have a national integrated energy and water plan in place by 2020; as of 2026, that goal remains unmet. Alsayed has argued for treating water security as a genuinely regional issue: unified desalination grids, shared strategic water reserves, and diversified resource goals could substantially reduce the vulnerability that the March 2026 attacks so graphically exposed. ^[22]

On the technological frontier, desalination continues to evolve. Graphene membranes, artificial intelligence optimization systems, and advanced electrochemical processes promise further reductions in energy intensity and cost. ^[23] The global desalination market, valued at $20 billion in 2023, is projected to double by 2032. ^[24] The ancient dream Aristotle articulated in his Meteorologica—of rendering the sea potable—has never seemed more urgent, or more achievable. What the Gulf’s crisis makes clear is that the engineering challenge and the geopolitical one are now inseparable. A desalination plant is simultaneously a marvel of applied science and a target. In the twenty-first century, water infrastructure is the new high ground.

Endnotes

1. Priyanka Shankar, “How Targeting of Desalination Plants Could Disrupt Water Supply in the Gulf,” Al Jazeera, March 8, 2026. https://www.aljazeera.com/news/2026/3/8/how-targeting-of-desalination-plants-could-disrupt-water-supply-in-the-gulf

2. Manish Kumar, Tyler Culp, and Yuexiao Shen, “Water Desalination: History, Advances, and Challenges,” in Frontiers of Engineering: Reports on Leading-Edge Engineering from the 2016 Symposium (Washington, DC: National Academies Press, 2017). https://www.nationalacademies.org/read/23659/chapter/14

3. Emilio Gabbrielli, “Seawater Desalination: A 7,000-Year Old Story,” Greening the Islands Foundation, January 30, 2025. https://greeningtheislands.org/seawater-desalination-a-7000-year-old-story/

4. Angelakis et al., as cited in “Desalination: From Ancient to Present and Future,” MDPI Water 13, no. 16 (August 2021): 2222. https://www.mdpi.com/2073-4441/13/16/2222

5. “Brief History of Water Treatment Technology,” UNISOL Membrane Technology. https://www.unisol-global.com/newsinfo/14

6. Ibid.

7. “History of Desalination, Current Situation, and Future Development Prospects,” RO AGUA Water Treatment Solutions. https://www.roagua.com/news/history-of-desalination-current-situation-and-future-development-prospects/

8. “When Innovation and Necessity Meet—The Birth of Israeli Desalination,” IDE Technologies, June 7, 2023. https://ide-tech.com/en/blog/when-innovation-and-necessity-meet-the-birth-of-israeli-desalination/

9. “Desalination,” Wikipedia, citing 2018 global energy intensity data. https://en.wikipedia.org/wiki/Desalination

10. Ibid.

11. Ibid.

12. Gulf Research Center, cited in Shankar, “How Targeting of Desalination Plants Could Disrupt Water Supply in the Gulf,” Al Jazeera, March 8, 2026.

13. Arab Center Washington DC, “The Costs and Benefits of Water Desalination in the Gulf,” 2023, cited in Shankar, Al Jazeera, March 8, 2026.

14. Shankar, Al Jazeera, March 8, 2026.

15. Naser Alsayed, quoted in Shankar, Al Jazeera, March 8, 2026.

16. Ibid.

17. CIA report (2010), cited in Shankar, Al Jazeera, March 8, 2026. https://www.cia.gov/readingroom/docs/CIA-RDP85T00283R000100160006-4.pdf

18. Shankar, Al Jazeera, March 8, 2026.

19. Raha Hakimdavar, quoted in Shankar, Al Jazeera, March 8, 2026.

20. Alsayed, quoted in Shankar, Al Jazeera, March 8, 2026.

21. Hakimdavar, quoted in Shankar, Al Jazeera, March 8, 2026.

22. Alsayed, quoted in Shankar, Al Jazeera, March 8, 2026.

23. “Desalination,” Wikipedia. https://en.wikipedia.org/wiki/Desalination

24. Ibid.