Global Water and Wastewater Treatment Market Size Likely to Grow at a CAGR of 5.8% By 2035

Market Size and Growth

The total market size of the global water and wastewater treatment has been estimated at USD 312.47 billion in 2025 and is expected to grow to USD 332.84 billion in 2026 and around USD 584.63 billion in 2035 with a CAGR of 5.8% over the period of 2026-2035.

Water and Wastewater Treatment Market Revenue and Trends

Water and wastewater treatment is a global market that includes equipment, chemicals, technologies, and services such as filtration systems, disinfection units, biological treatment processes, membrane modules, coagulants and advanced monitoring services that can be used to purify municipal drinking water, treat industrial effluents, and recycle wastewater. The world water and wastewater treatment market is fast expanding due to increasing water scarcity, tougher and stricter environmental policies on discharge and reuse, growing urbanity and population, rising industrialization, the development of membrane applications, intelligent monitoring, and no liquid discharge systems all over the world.

What are the Factors That Have a Significant Contribution to the Growth of the water and wastewater treatment market?

The adoption has been accelerated by the increasing demand for effective treatment options that will guarantee a clean water supply and safe disposal of effluents, heightened regulations such as the EU Water Framework Directive and the U.S. Clean Water Act, and the increasing requirements of industries such as chemicals, food and beverage, and power generation for water. The report released by the industry shows that the market is expected to grow drastically as more funds are invested in the infrastructure and reuse projects. With the increase in the rates of pollution and droughts due to climate changes, cities and factories are in search of modern solutions that will be efficient in eliminating contaminants and retrieving resources.

High-efficiency reverse osmosis and ultrafiltration membranes, AI-based predictive maintenance, real-time quality sensors on the IoT, and integrated zero-liquid-discharge plants have been introduced due to technological innovations and have enhanced energy efficiency, speed of treatment, and compliance. Other drivers are the increased attention given to circular water economy activities, better availability of higher-tier treatment facilities in the emerging economies and government subsidies and public-watershed alliances towards sustainable water management in both developed and emerging markets.

Segment Insight

By Product Type

As of 2025, the largest share of the water and wastewater treatment market is dominated by membrane filtration systems due to the need to remove dusts of contaminants, microbes, and salts to the highest degree of accuracy in municipal and industrial markets. These systems are required in desalination, wastewater reuse, and ultrapure water, and their growth has been energetic due to low-energy and antifouling membrane innovations that improve throughput and life (which is considered by most utilities and plant operators highly significant to achieve high-quality standards and water recycling).

By Distribution Channel

Direct sales of manufacturers have the biggest market share and it is the main channel to design the system unique to the customers, technical support, installation, and continued maintenance services. These channels offer professional process optimization, documentation of regulatory guidelines and custom engineering to municipal authorities, industrial plants and the EPC contractors operating large-scale treatment plants, these channels are the choice of sectors with complex, high-volume and regulated water management processes.

Regional Insights

The Asia Pacific are the front-runners in the world water and wastewater treatment market because of the massive population growth, high industrialization, and grave water pollution problems in such countries as China and India, as well as the massive government investments in the infrastructure and reuse initiatives. The area also enjoys the growth of municipal and industrial capacity, large manufacturing hubs of gear, and a high need for sophisticated treatment decisions that spur constant development and new capacity inclusions.

In the meantime, the water and wastewater treatment market in North America is characterized by high growth rates due to the strict regulatory frameworks, the modernization of the aging infrastructure, high priorities on the innovative technologies such as smart monitoring and zero-liquid discharge, and heavy investments in water resilience by the people. Nations such as the United States enjoy the advantage of significant utility modernization efforts, industry compliance requirements, and early adaptation of membrane and digital technologies backed by federal funds and sustainability efforts.

Report Scope

Recent Developments

• In March 2025: DuPont Water Solutions introduced WAVE PRO, a high-tech online modelling platform that can be used to optimize ultrafiltration water treatment systems and achieve faster design, energy savings, and performance improvements in a municipal or industrial water treatment facility.

List of the prominent players in the Water and Wastewater Treatment Market:

• Veolia Environment S.A.
• Suez S.A.
• Xylem Inc.
• Evoqua Water Technologies (Xylem)
• AECOM
• Jacobs Engineering Group Inc.
• Pentair plc
• DuPont de Nemours Inc. (Water Solutions)
• Toray Industries Inc.
• O. Smith Corporation
• Kurita Water Industries Ltd.
• Others

The Water and Wastewater Treatment Market is segmented as follows:

By Treatment Type

• Physical Treatment (Sedimentation, Filtration, Screening, Flotation)
• Chemical Treatment (Coagulation/Flocculation, Disinfection, pH Adjustment, Advanced Oxidation)
• Biological Treatment (Activated Sludge, Membrane Bioreactor, MBBR, Anaerobic Digestion)
• Other Treatment Types (Ion Exchange, Electrochemical, Thermal Treatment)

By Technology

• Membrane Filtration (UF, MF, NF)
• Reverse Osmosis (SWRO, BWRO, NF)
• UV Disinfection
• Activated Sludge & Biological Nutrient Removal
• Ion Exchange & Adsorption (GAC, IX Resins)
• Advanced Oxidation Processes (Ozone, Fenton, UV-H₂O₂)
• Other Technologies (Electrocoagulation, Constructed Wetlands)

By Application

• Municipal Water Treatment (Drinking Water Production)
• Industrial Water Treatment (Process Water, Cooling Water, Boiler Feed)
• Municipal Wastewater Treatment (Secondary and Tertiary Treatment)
• Industrial Wastewater Treatment (Effluent Treatment, ZLD)
• Agricultural Water Management (Irrigation Water Treatment, Drainage Treatment)
• Other Applications (Stormwater, Desalination, Water Reuse)

By End-Use

• Municipalities & Public Utilities
• Power Generation (Thermal, Nuclear, Renewable)
• Oil & Gas (Produced Water, Process Water)
• Food & Beverage
• Pharmaceuticals & Healthcare
• Mining & Metals
• Other End-Uses (Textiles, Pulp & Paper, Semiconductors)

Regional Coverage:

North America

• U.S.
• Canada
• Mexico
• Rest of North America

Europe

• Germany
• France
• U.K.
• Russia
• Italy
• Spain
• Netherlands
• Rest of Europe

Asia Pacific

• China
• Japan
• India
• New Zealand
• Australia
• South Korea
• Taiwan
• Rest of Asia Pacific

The Middle East & Africa

• Saudi Arabia
• UAE
• Egypt
• Kuwait
• South Africa
• Rest of the Middle East & Africa

Latin America

• Brazil
• Argentina
• Rest of Latin America