China Water Desalination Market Forecast 2025–2033
According to Renub Research China Water Desalination Market is expected to grow significantly from US$ 1.84 billion in 2024 to US$ 4.66 billion by 2033, reflecting an impressive CAGR of 10.88% between 2025 and 2033. The rapid market expansion is driven by worsening freshwater shortages, fast industrialization, and strong government initiatives aimed at scaling desalination capacity nationwide. As China embraces advanced reverse osmosis (RO), thermal distillation, and hybrid desalination technologies, large-scale plant installations are increasing to support urban populations, industry clusters, and regions facing extreme water stress. Heightened environmental consciousness and the push toward national water security are positioning China as a global leader in desalination innovation and development.
China Water Desalination Market Outlook
Water desalination is the process of transforming saline water—whether seawater or brackish water—into freshwater by removing dissolved salts, minerals, and other impurities. This technology has become crucial worldwide as populations grow, industrial activity intensifies, and climate change diminishes freshwater availability. Modern desalination typically relies on reverse osmosis (RO), multi-stage flash (MSF) distillation, multi-effect distillation (MED), and increasingly, electrodialysis systems that enhance efficiency in treating diverse water sources.
Desalinated water serves a wide spectrum of applications. It supplies drinking water to densely populated coastal regions, supports irrigation in arid areas, and provides high-purity industrial water for power plants, chemical manufacturing, oil & gas processing, and semiconductor fabrication. Desalination systems also play a critical role in emergency response, drought mitigation, and long-term water planning.
In China, desalination is expanding rapidly as freshwater scarcity worsens in the country’s northern and inland regions. Rising industrial water demand, shifting rainfall patterns, and rapid urban growth have pushed the government to treat desalination as a strategic pillar of national water security. Large desalination plants along the eastern and southeastern coastlines are supplying millions of residents and industries, while new inland brackish water projects are helping offset river pollution and aquifer depletion. With robust policy support and increasing private-sector participation, China is emerging as a global powerhouse in desalination capacity and technology development.
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Growth Drivers in the China Water Desalination Market
Increasing Freshwater Shortage
China faces one of the world’s most severe freshwater shortages, especially in northern provinces such as Beijing, Tianjin, Hebei, Shanxi, and Inner Mongolia. Rapid industrialization and dense urbanization place extreme pressure on limited natural water reserves. Reduced rainfall, shrinking lakes, and heavily polluted river basins exacerbate the crisis, while climate change further disrupts hydrological patterns.
To counter this escalating water crisis, China is scaling up massive desalination projects that supply cities, industries, and coastal regions with dependable water resources. Freshwater scarcity—a problem projected to worsen by 2050 as over 3,000 sub-basins globally face quality and quantity risks—is expected to significantly impact China. As water becomes a strategic resource linked to national development, desalination technologies offer a secure alternative to strained rivers and groundwater systems. The rapidly rising demand for water reliability is thus propelling large-scale adoption of desalination across the country.
Government Initiatives and Investments
China’s central and regional governments are actively promoting desalination through policy support, funding incentives, and long-term national planning. Coastal provinces such as Tianjin, Liaoning, and Shandong have been prioritized for major desalination infrastructure. These initiatives underline the government’s commitment to addressing water scarcity and securing sustainable water supplies.
The 2021 national action plan set ambitious targets to expand desalination capacity to 3.5 million cubic meters per day by 2025, integrating desalinated water into municipal supply systems. Under the 14th Five-Year Plan, China also emphasized leadership in global sustainable water solutions. Recent desalination projects—including hybrid systems, advanced RO membranes, and renewable-energy-powered plants—reflect this forward-looking approach.
By fostering an innovation-friendly ecosystem and offering supportive regulatory frameworks, China is encouraging both domestic and international firms to participate in next-generation desalination projects, further accelerating market expansion.
Technological Innovations in Desalination
Technological advancements are significantly improving energy efficiency and lowering the operating costs of desalination systems. Modern RO membranes, nanofiltration technologies, and energy recovery devices have transformed the economics of desalination. Hybrid systems that integrate RO with MSF, MED, or solar-powered systems deliver stronger performance with lower environmental impact.
In March 2025, global desalination leader ACWA Power launched its first overseas Innovation Centre in Shanghai’s Pudong New Area. With an investment of RMB 20 million (US$ 2.8 million), the facility focuses on breakthrough advancements in photovoltaics, wind, energy storage, green hydrogen, and seawater desalination. This center, recognized with the “Group Open Innovation (GOI)” award, is expected to deepen China’s R&D ecosystem for green desalination technologies.
As these innovations continue to scale, they enhance plant efficiency, reduce energy consumption, and make desalination more viable for large municipal and industrial users.
Issues in the China Water Desalination Market
High Operating and Energy Costs
Despite improvements in efficiency, desalination remains energy-intensive, particularly for large seawater desalination facilities. High electricity consumption significantly increases operating costs, posing challenges for smaller municipalities and inland regions that lack access to low-cost energy. The economic burden of maintaining continuous operations can deter investment, especially where alternative water sources—though limited—are less expensive to procure.
Balancing affordability with long-term water security remains a central dilemma for China’s desalination policymakers.
Environmental Concerns
Desalination plants produce concentrated brine, which, if improperly discharged, can cause salinity spikes and oxygen depletion in marine environments. This threatens marine biodiversity and disturbs coastal ecosystems. China’s increasing environmental regulations demand more sustainable brine management practices, such as environmentally engineered outfalls, dilution systems, and resource recovery from brine.
Environmental impact assessments, regulatory pressures, and ocean ecosystem protection efforts continue to challenge plant developers and require continuous innovation in waste management strategies.
China Water Desalination Reverse Osmosis Market
Reverse osmosis remains the dominant desalination technology in China due to its efficiency, versatility, and lower energy requirements compared to thermal distillation. RO systems are widely used for municipal drinking water, industrial process water, and coastal city supply networks. Improvements in membrane durability, fouling resistance, and energy-recovery devices have made RO the preferred option for future expansion plans.
China Municipal Water Desalination Market
Municipal desalination is rapidly expanding as coastal megacities seek long-term water security. Cities such as Shanghai, Shenzhen, and Tianjin rely on large RO plants to meet growing residential water needs. These systems deliver steady drinking water supplies despite inadequate river and groundwater availability. Rising urban populations and ambitious city-planning initiatives will ensure strong municipal demand for desalinated water in the years ahead.
China Industrial Water Desalination Market
China’s industrial sector compounds demand for reliable high-quality water. Power plants, refineries, petrochemical complexes, steel manufacturers, and semiconductor industries all require substantial volumes of treated water. Coastal industrial parks increasingly incorporate desalination to reduce dependence on freshwater ecosystems.
In April 2025, SUEZ inaugurated China’s largest industrial membrane-based seawater desalination plant at Wanhua Chemical’s Penglai Industrial Park, providing a dependable water source in a tightly constrained region. Such projects reflect the rising adaptation of desalination within heavy industries seeking sustainable water solutions.
China Seawater Desalination Market
Seawater desalination forms the largest share of China’s desalination industry owing to its extensive coastline. Major coastal clusters—including Bohai Bay, the Yangtze River Delta, and the Pearl River Delta—use seawater desalination for municipal and industrial supply. Expansion of large-scale plants is aligned with China’s coastal development strategies and its plans for urban-industrial integration.
China River Water Desalination Market
In inland regions, brackish and polluted river water desalination is gaining traction. While smaller in scale compared to seawater projects, river desalination plays a critical role where freshwater sources are contaminated or salinity levels exceed drinking-water standards. Technologies such as electrodialysis, nanofiltration, and advanced RO membranes serve municipal needs and industrial operations in provinces facing severe river pollution.
Shanghai Water Desalination Market
Shanghai is among China’s most important desalination hubs due to its dense population and industrial significance. Various plants along the Yangtze Delta utilize RO and hybrid technologies to supplement municipal water. Rapid urbanization and strong industrial growth ensure long-term dependence on desalination.
In April 2025, the city will host WATERTECH CHINA 2025, the world’s largest exhibition on process, drinking, and wastewater solutions—further strengthening its leadership in water industry innovation.
Beijing Water Desalination Market
Although inland, Beijing relies on desalination through coastal water-transfer projects and local brackish water treatment to combat chronic shortages. Government-backed investments in municipal and industrial desalination reinforce Beijing’s strategy to diversify its water sources and ensure urban resilience.
Shenzhen Water Desalination Market
Shenzhen’s booming technology and manufacturing sectors are boosting demand for seawater desalination. Large coastal plants supply industrial clusters and support ongoing population growth. As a strategic city near the South China Sea, Shenzhen continues to invest in advanced desalination systems to maintain economic expansion.
Chengdu Water Desalination Market
As an inland metropolis, Chengdu draws on brackish water desalination and advanced treatment technologies for industrial parks and high-tech manufacturing zones. The city’s push for sustainable water management and rising industrial water consumption support strong market expansion in the coming decade.
Market Segmentation
Technology
- Reverse Osmosis
- Multi-Stage Flash (MSF) Distillation
- Multi-Effect Distillation (MED)
- Others
Application
- Municipal
- Industrial
- Others
Water Source
- Seawater
- Brackish Water
- River Water
- Others
Cities
Shanghai, Beijing, Shenzhen, Chongqing, Guangzhou, Suzhou, Chengdu, Hangzhou, Tianjin, Rest of China
Key Players Analysis (Overview, Key Person, SWOT, Revenue, Recent Developments)
Major companies covered include:
- Guangzhou KangYang Seawater Desalination Equipment Co.
- Genesis Water Technologies
- Biwater
- Aquatics International
- IDE Technologies
- Acciona SA
- SUEZ Environment
- Veolia Environment SA
