Desalination Market Reaches USD 20.63 Billion as Water Stress, Reverse Osmosis Scale, and Renewable-Powered Megaprojects Redefine Global Water Security

April 10, 2026 - According to DataM Intelligence, the global Desalination Market reached USD 20.63 billion in 2025 and is set to expand strongly through 2033 as governments, utilities, and industrial users accelerate investment in climate-resilient water infrastructure. The market is being pulled by a clear structural imbalance in the global water system. WHO and UNICEF reported in August 2025 that 2.1 billion people still lacked safely managed drinking water, while UN-Water said in 2025 that roughly half of the world's population experiences severe water scarcity for at least part of the year.

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Market Overview and Size

According to DataM Intelligence, the commercial case for desalination is strengthening because freshwater scarcity is no longer a localized issue. It is increasingly affecting urban growth, industrial continuity, food systems, and long-term infrastructure planning. The World Bank's latest desalination and reuse analysis says global installed desalination capacity reached 70.6 million cubic meters per day in 2023, equal to about 5% of global domestic water withdrawals, and that another 19.51 million cubic meters per day is expected to come online between 2023 and 2028. That pipeline is material. It signals that desalination is no longer being planned as a niche or last-resort asset, but as a mainstream water-supply option in regions where conventional resources are increasingly unreliable.

The strategic relevance of the market is rising further because desalination increasingly intersects with energy efficiency, water reuse, industrial continuity, and national resilience. Veolia stated in April 2025 that desalination capacity planned for award over 2025-2030 represents roughly 40 million cubic meters per day, with growth led by the Middle East, Pacific Asia, and selected European markets. For infrastructure investors, technology providers, and water-intensive industries, that implies a market that is expanding not only in project count, but in scale, operating sophistication, and strategic importance.

Market Dynamics
Water stress is turning desalination into a strategic necessity

The most durable growth driver is rising water stress. UN-Water's 2025 analytical brief shows that 2.2 billion people lack safely managed drinking water, while at least 50% of the world's population lives under highly water-stressed conditions for at least one month each year. The same source identifies the Middle East and North Africa as the most water-stressed region globally. This matters for the desalination market because once water scarcity becomes chronic rather than cyclical, utilities and governments begin treating desalination as base-load supply infrastructure rather than emergency backup capacity.

Capacity growth is accelerating in the regions that need it most

The World Bank expects desalination growth to happen at a high pace, with the fastest expansion in the Gulf countries, followed by other North Africa and Middle East markets, Asia, and Latin America. A related World Bank summary notes that Middle East and North Africa accounted for almost half of the world's online desalination capacity in 2025, and that the five countries with the highest online capacity included Saudi Arabia at 17.3 million cubic meters per day and China at 14.0 million cubic meters per day. Those numbers matter because they show where the market's largest installed base already exists and where future project awards are most likely to remain concentrated.

Reverse osmosis continues to improve the project economics

Technology economics remain one of the strongest reasons the market is broadening. Veolia said in October 2025 that reverse osmosis now accounts for 70% of new seawater desalination plants worldwide, and that energy consumption has fallen from about 4.5 kWh/m3 to below 3 kWh/m3 through better membranes, energy recovery, and digital process optimization. That improvement is commercially meaningful. It supports lower operating costs, reduces sensitivity to power prices, and makes desalination more bankable in regions where water tariffs and public budgets have historically constrained adoption.

Renewable-powered desalination is moving into bankable scale

A second major catalyst is the transition from fossil-powered desalination toward lower-carbon supply models. ACCIONA announced in May 2025 that the Casablanca desalination plant in Morocco will produce 300 million m3 per year, serve 7.5 million people, and be powered entirely by a 360 MW wind farm, making it the largest desalination plant in the world powered 100% by renewables according to the company. This is a significant signal for the market because it shows renewable-powered desalination has moved beyond small pilot systems into utility-scale infrastructure with long-duration operating concessions.

Market Disruption

The main disruption in the desalination market is not weaker demand. It is the shift in how projects are designed, financed, and judged. Reverse osmosis has changed the competitive balance away from older thermal technologies, while renewable power integration is pushing the industry to compete on lifecycle efficiency rather than pure output. At the same time, public buyers are becoming more selective on energy intensity, brine management, cost per cubic meter, and delivery risk. This is increasingly separating scalable platform providers from engineering contractors with less membrane, digital, or operating depth. In practical terms, the market is becoming more technology-led, more performance-sensitive, and more long-term in how value is created.

Recent Developments

1. In October 2025, Veolia was awarded the operation and maintenance contract for Chile's first municipal and industrial desalination plant in Valparaíso, with an initial duration of four years, renewal options through 2040, a plant capacity of 1,000 liters per second, and a 105 km pumping system.

2. In October 2025, Fluence secured a contract worth more than USD 12 million in Saudi Arabia to provide an ultra-pure water treatment system using Niroflex technology for a new combined-cycle power plant, with most work scheduled to be completed in 2026.

3. In February 2026, ACCIONA reported active desalination works in Alkimos, Casablanca, Collahuasi, and Ras Laffan 2, underlining the continued size of its global water pipeline.

4. In April 2026, DuPont Water Solutions introduced new Inge ultrafiltration modules with integrated pre-filter, a relevant pretreatment advance for large water-treatment systems, including desalination-adjacent installations.

Market Segmentation

Technology: Reverse osmosis remains the commercial core

Among technologies, reverse osmosis is the clearest commercial anchor. Veolia says RO now accounts for 70% of new seawater desalination plants worldwide, reflecting its advantage in energy efficiency, modularity, and compatibility with renewable integration. That matters because it aligns closely with where project awards are moving: lower-energy systems, faster commissioning, and stronger lifecycle economics. Multi-stage flash and multi-effect distillation remain important in some legacy and high-salinity applications, but the center of gravity is clearly shifting toward membrane-led desalination.

Source and energy source: Seawater remains dominant, while renewable integration is gaining strategic weight

From a source perspective, seawater desalination remains the most important commercial base because the largest installed-capacity countries are coastal and heavily reliant on seawater systems. World Bank data indicates Saudi Arabia and China are already the two largest online markets by capacity in 2025. On the energy side, the market is beginning to differentiate more sharply between renewable-integrated and conventional power-linked systems. ACCIONA's Casablanca project, with 300 million m3 annual output and dedicated wind power, is one of the strongest indicators that renewable-powered desalination is moving into mainstream project finance and concession models.

End user: Municipal demand anchors the market, while industrial demand is expanding

Municipal users continue to anchor the largest projects because desalination is increasingly being deployed to secure long-duration drinking water supply for major population centers. The Casablanca project is designed to serve 7.5 million people, and Veolia's Valparaíso contract covers both municipal and industrial supply. At the same time, industrial desalination is becoming more important in sectors such as power, mining, and advanced manufacturing, reflected by Fluence's Saudi power-sector contract and DuPont's reported strength in industrial and municipal water markets within its Water Technologies business. This suggests the market's next phase will not be municipal-only. It will be increasingly shared between public supply and high-value industrial water security.

Regional Analysis
Middle East and North Africa

Middle East and North Africa remains the market's most important region by installed scale and structural need. World Bank-backed analysis says the region accounted for almost half of global online desalination capacity in 2025, and UN-Water identifies it as the most water-stressed region in the world. Saudi Arabia alone had 17.3 million m3/day of online desalination capacity in 2025, making it the single most important country market by scale. This keeps MENA at the center of both project awards and operating innovation.

Asia Pacific

Asia Pacific is becoming the market's second major growth engine. World Bank data points to Asia as one of the fastest-growing regions after the Gulf, while China had 14.0 million m3/day of online capacity in 2025, making it the second-largest national market by scale. Australia remains active in large municipal desalination infrastructure, and the region's broader exposure to coastal urbanization, industrial water demand, and climate variability is supporting further investment.

North America

North America remains a strategically important market even if it is smaller than MENA in total desalination dependence. The United States is among the top five countries globally by online capacity in 2025, according to World Bank-linked data, and the region continues to support municipal resilience, industrial desalination, and brackish-water applications. It also remains an important innovation market for membranes, digital monitoring, and modular treatment platforms.

Europe and South America

Europe is more selective on demand growth than MENA or Asia, but it remains central in technology leadership and project development, with major suppliers such as Veolia, ACCIONA, SUEZ, and DuPont shaping global project pipelines. South America is becoming more commercially relevant as drought and industrial water demand intensify, illustrated by Veolia's award for the first municipal and industrial desalination plant in Chile's Valparaíso region. That contract is a strong indicator that desalination demand in Latin America is moving from mining-only use cases toward broader public-utility applications.

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Company Profile
Veolia Environnement S.A.

Veolia remains one of the strongest reference players in the market. The company says 18% of the world's installed desalination capacity has been built using its technologies and that it aims to double its operations and maintenance capacity by 2030 while maintaining that share. Its October 2025 Chile award also shows that Veolia is not only a technology supplier but an increasingly important long-term operating partner in new desalination assets.

Acciona, S.A.

ACCIONA continues to stand out as a major RO desalination developer and operator. Company materials describe it as a global leader in reverse osmosis desalination, and its FY2025 results show Water D&C backlog of EUR 1.69 billion and O&M backlog of EUR 3.008 billion. Its Casablanca project remains one of the most commercially important desalination developments globally because of its fully renewable power structure, 300 million m3 annual output, and 27-year operating period.

DuPont

DuPont is increasingly relevant to the desalination value chain through membranes and water-treatment technologies. Its Healthcare & Water Technologies segment recorded USD 3.233 billion in net sales in 2025, up 9% from 2024, with the company saying volume gains in Water Technologies were driven by strength in industrial and municipal water markets. DuPont also completed the acquisition of Sinochem (Ningbo) RO Memtech in October 2025 for USD 56 million, strengthening its reverse osmosis manufacturing presence in China and the Asia Pacific region.

Fluence Corporation Limited

Fluence represents the modular and decentralized side of the market. Its FY2025 quarterly business update reported USD 78.4 million in revenue, USD 4.0 million in EBITDA, and USD 74.8 million in backlog. The company's USD 12 million-plus Saudi award for the Qurayyah power plant underscores its growing presence in Middle East industrial water applications and its relevance in faster-deployment desalination-adjacent systems.

Analyst View

According to DataM Intelligence, the Desalination Market is entering a more investable phase. Water stress is now persistent enough, and technology efficiency is now strong enough, for desalination to be treated as core infrastructure rather than last-resort supply. Reverse osmosis should remain the market's commercial backbone, renewable-powered desalination should capture a rising share of premium project development, and MENA should remain the largest demand center while Asia Pacific becomes the fastest broadening regional market. In this market, the next leaders are likely to be the companies that can combine membrane efficiency, energy discipline, long-term operations capability, and bankable project execution into a single platform.

Contact:
Fabian
DataM Intelligence 4market Research LLP
6th Floor, M2 Tech Hub, DataM Intelligence 4market Research LLP, Lalitha Nagar, Habsiguda, Secunderabad, Hyderabad, Telangana 500039
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Email: fabian@datamintelligence.com

About DataM Intelligence

DataM Intelligence is a market research and business intelligence firm delivering decision-ready insights across industrial, energy, agriculture, healthcare, consumer, and technology markets. The company provides premium research reports, custom studies, competitive intelligence, and growth strategy support for organizations making high-value commercial decisions.

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