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Desalination Is Becoming Vital for Asia’s Coastal Water Security

With freshwater stress rising in coastal cities, desalination is playing a key role in Asia’s long-term water security strategy, driven by new technologies and falling costs.
Desalination For Water Security Asia

Asia Pacific Water and Wastewater Treatment Market Size, Share and Growth Analysis Report: Forecast Trends and Outlook (2026-2035)

Role of Desalination Plants in Coastal Asia

Asia’s coastal cities, from Chennai to Hong Kong, are increasingly turning to desalination to meet their growing water needs. With rising population density, climate-driven rainfall variability, and saline intrusion in groundwater, seawater desalination offers a dependable alternative.

Countries like India, China, Saudi Arabia (APAC’s western fringe), and Australia are investing in large-scale desalination plants powered by reverse osmosis (RO), with many incorporating solar or wind to reduce energy costs.

Key Driving Factors for Desalination in Asia

  • Water scarcity in megacities with limited freshwater resources
  • Increasing industrial demand in ports, oil refineries, and coastal power plants
  • Supportive government policies and co-funding opportunities
  • Technology innovation lowering operating costs and brine discharge impact

For instance, the Minjur and Nemmeli plants in Tamil Nadu, India, together supply over 200 MLD of desalinated water to Chennai. Singapore’s Tuas facility uses hybrid membrane systems to improve water recovery and energy efficiency.

Challenges Continue to be Present

High capital and energy costs remain a concern, as do environmental issues related to brine disposal. However, advances in low-pressure membranes, energy recovery devices, and solar-powered RO are gradually resolving these issues.

Future Outlook: Small-Scale Modular Desalination

Emerging solutions like containerized desalination units have become ideal for island communities and disaster-prone zones. These are gaining traction in the Philippines and Indonesia, where infrastructure access is often limited.

Explore our Asia Pacific Water and Wastewater Treatment Market for data on regional desalination investments.

Desalination Will Anchor Asia’s Coastal Resilience

As urbanization and water stress intensify, desalination will remain a key pillar in Asia’s long-term water supply strategy. Technological progress and sustainability-focused models will further drive adoption across the region.

About The Author

Neha Gawande

Neha is an experienced market intelligence professional with more than 5 years of expertise in conducting research across various industries, such as food and beverage, automotive, construction, and agriculture, among others. She specializes in primary research with industry experts, secondary research, and report writing. Neha has a strong expertise in supply chain analysis and competitive analysis, including Porter's Five Forces model and market share analysis.

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C130 Sector 2 Noida, Uttar Pradesh 201301

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40th Floor, PBCom Tower, 6795 Ayala Avenue Cor V.A Rufino St. Makati City, 1226.

+63-287-899-028, +63-967-048-3306

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+44-753-713-2163

193/26/4 St.no.6, Ward Binh Hung Hoa, Binh Tan District, Ho Chi Minh City

+84-865-399-124