PUBLISHER: Meticulous Research | PRODUCT CODE: 2138408
PUBLISHER: Meticulous Research | PRODUCT CODE: 2138408
The global Water and Wastewater Treatment Market was valued at USD 381,800.0 million in 2025. It is estimated to reach USD 404,708.0 million in 2026 and is projected to grow to USD 738,562.0 million by 2036, at a CAGR of 6.2% during the forecast period. This report offers a detailed look at the market, covering key trends, treatment technologies, regulations, case studies, vendor selection criteria, competitive activity, and future growth opportunities.
Water and wastewater treatment covers the technologies, chemicals, digital systems, engineering and construction services, and operation services used to produce safe drinking water, supply process and ultrapure water to industry, and treat sewage and industrial effluent before discharge or reuse. The market includes membranes, biological processes, clarification, activated carbon, disinfection, and sludge management systems, along with treatment chemicals, sensors and control software, plant design and construction, and long-term operation and maintenance contracts for municipal utilities and industrial facilities. Demand is closely linked to gaps in basic services, with the WHO/UNICEF Joint Monitoring Programme reporting that 2.1 billion people still lacked safely managed drinking water and 3.4 billion lacked safely managed sanitation in 2024, and to water infrastructure needs that the OECD and the World Bank estimate at USD 6.7 trillion by 2030.
The industry is consolidating as leading companies build positions in industrial water, analytics, and PFAS treatment. Veolia took full ownership of Water Technologies and Solutions in June 2025, Ecolab acquired the Ovivo electronics ultrapure water business in December 2025, Veralto completed the acquisition of In-Situ in January 2026, and Xylem agreed to acquire Cornell Pump and Roper Pump for USD 1.46 billion in August 2026. Companies are also adding capacity, including Calgon Carbon's investment of nearly USD 100 million in carbon reactivation for PFAS treatment and Toray's reverse osmosis membrane plant in Saudi Arabia, while large long-term contracts continue, such as the 15-year, EUR 2 billion performance-based contract awarded to SUEZ and its partners in Oman in June 2026.
The report examines market drivers and restraints, treatment technologies such as reverse osmosis, ultrafiltration, nanofiltration, membrane bioreactors, UV and ozone, activated carbon, and industrial demineralization, digital monitoring and AI-based plant optimization, the value chain, and key regulations, including the U.S. EPA PFAS drinking water rule and the recast EU Urban Wastewater Treatment Directive. It explains why membranes, membrane bioreactors, and process control & automation are growing faster than the overall market and how PFAS and micropollutant rules are shaping the timing of capital projects. It also provides market forecasts, segment-level insights, and regional analysis across 5 regions and 38 countries and sub-regions to support business, investment, and product decisions.
Market Dynamics
Population growth, urbanization, and stricter treatment rules are the main forces behind market growth, as many cities are adding people faster than they add treatment capacity. India's AMRUT missions had created 7,380 million litres per day of sewage treatment capacity by July 2026, while the recast EU directive requires nutrient removal at large plants by 2039 and quaternary treatment for micropollutants by 2045. Water scarcity is also turning treatment into a source of supply, with Saudi Arabia expanding desalination capacity from 4.6 million to more than 16 million cubic meters per day between 2016 and 2025 and Chinese cities using more than 22 billion cubic meters of recycled water in 2025. In addition, waterborne disease remains a public health priority, with 354 million people still practising open defecation in 2024.
Treatment infrastructure is expensive to build and operate. The U.S. EPA estimates that drinking water, wastewater, and stormwater systems need more than USD 1.25 trillion of investment over 20 years, compared with about USD 50 billion of water funding under the Bipartisan Infrastructure Law, and in May 2026 the agency proposed giving water systems until April 2031 to comply with PFOA and PFOS limits. Wastewater treatment is also energy intensive, and much of the existing infrastructure in developed economies is reaching the end of its design life, with U.S. clean water needs rising by 73% between 2012 and 2022, so a large part of spending must go to rehabilitation rather than new capacity.
Energy-efficient and advanced treatment technologies offer a major opportunity, as the Shuaiba 5 plant in Saudi Arabia set a record of 2.34 kilowatt-hours per cubic meter and recent reverse osmosis projects in Saudi Arabia and the UAE have achieved water prices below USD 0.50 per cubic meter. Industrial water reuse is creating a fast-growing group of customers, with Veolia estimating that data centers and semiconductor manufacturing will use as much water as 46 million people by 2030 and TSMC targeting more than 60% reclaimed water use at its Taiwan fabs by 2030. Meanwhile, PFAS removal, digital water platforms, and performance-based service contracts are opening new revenue streams for technology suppliers and operators.
Segment Analysis
The report analyzes the market by type, offering, application, and geography, helping stakeholders identify the most promising growth opportunities.
Based on type, the market is segmented into wastewater treatment and water treatment. In 2026, wastewater treatment is expected to account for the larger share of the market and is also expected to grow faster, driven by sanitation programs such as the AMRUT and Swachh Bharat missions in India, stricter nutrient and micropollutant rules in Europe, and the growing use of treated wastewater as a new water supply. Water treatment is supported by desalination and the removal of PFAS from drinking water.
Based on offering, the market is segmented into operation & maintenance services, treatment technologies, design, engineering, and construction services, treatment chemicals, and process control & automation. In 2026, operation & maintenance services are expected to account for the largest share of the market, reflecting the recurring cost of running plants and networks over several decades and the growth of long-term performance-based contracts. Process control & automation is expected to grow the fastest, as utilities adopt sensors, SCADA systems, smart metering, digital twins, and AI-based optimization to reduce water losses, energy use, and compliance risk.
Based on treatment technology, the market is segmented into membrane separation & filtration, activated sludge, sludge management, activated carbon, clarification, chlorination, industrial demineralization, membrane bioreactor (MBR), UV & ozone, dissolved air flotation, and other treatment technologies. In 2026, membrane separation & filtration, which includes reverse osmosis, ultrafiltration, microfiltration, and nanofiltration membranes, is expected to hold the largest share, driven by desalination, water reuse, and advanced drinking water treatment. MBR is expected to grow the fastest, supported by compact plants for reuse and tighter discharge limits, while activated carbon is gaining from PFAS treatment and conventional chlorination and clarification are expected to grow more slowly.
Based on application, the market is segmented into municipal and industrial applications, with industrial applications further segmented into food & beverage, pharmaceuticals & chemicals, power generation, pulp & paper, oil & gas, mining, petrochemicals, semiconductors, and other industrial applications. In 2026, municipal applications are expected to account for the larger share, supported by national coverage programs, the recast EU directive, and the replacement of aging networks, while industrial applications are expected to grow faster. Among industrial applications, pharmaceuticals & chemicals is expected to be the largest, while semiconductors are expected to grow the fastest from a small base, driven by new fabs and their need for ultrapure water and water reclamation.
Regional Analysis
The report covers Asia-Pacific, North America, Europe, Latin America, and the Middle East & Africa, spanning 38 countries and sub-regions. The regional analysis considers water and sanitation coverage programs, water scarcity, desalination and reuse capacity, drinking water and discharge regulations, infrastructure investment needs, and industrial growth.
In 2026, Asia-Pacific is expected to account for the largest share of the global market and is also expected to grow the fastest during the forecast period. The region's lead reflects China's large installed base and its reuse and sponge city programs, India's sanitation and tap water missions, and the concentration of semiconductor manufacturing in Taiwan, South Korea, Japan, Singapore, and Malaysia. China is the largest market in the region, while India is expected to grow the fastest, followed by Vietnam, the Philippines, and Indonesia.
North America is the second-largest regional market, driven by aging infrastructure, PFAS compliance, and industrial investment in semiconductor fabs and data centers, with the U.S. as the largest country market in the world. Europe's growth is led by regulation, including the recast Urban Wastewater Treatment Directive, which member states must transpose by July 2027, and PFAS limits for drinking water in force since January 2026; Germany is its largest market and Poland is expected to grow the fastest. The Middle East & Africa is supported by desalination and reuse in the Gulf states and the rehabilitation of wastewater systems in Africa, led by Saudi Arabia, while Latin America's growth comes from sanitation targets in Brazil, its largest market, and mining water demand in Chile, its fastest-growing market.
Competitive Landscape
The report provides a detailed review of the competitive landscape, covering key growth strategies, competitive benchmarking by offering, the competitive dashboard, and market ranking analysis, together with profiles of leading companies including their financial performance, product portfolios, strategic developments, and SWOT analyses.
The water and wastewater treatment market is fragmented, as municipal services are delivered largely by public utilities and no single company holds a dominant share. The market brings together global operators, industrial water and chemical companies, water technology companies, membrane and activated carbon producers, and engineering and construction firms. Based on the 2025 market ranking, Veolia ranked first, followed by Ecolab, Xylem, SUEZ, and Kurita. Between January 2024 and September 2026, the profiled companies reported 89 strategic developments, with contracts and agreements and acquisitions as the main strategies.
The competitive benchmarking compares companies on their presence across operation & maintenance services, process control & automation, treatment technologies, design, engineering, and construction services, and treatment chemicals, with Veolia and Kurita active across all five offerings. Companies compete on lifecycle cost, proven performance and plant references, regulatory compliance, local service capacity, and the ability to deliver integrated solutions from design and construction to chemicals, digital controls, and long-term service.
Key companies profiled in the report include Veolia Environnement SA (France), Ecolab Inc. (U.S.), Xylem Inc. (U.S.), SUEZ SA (France), Kurita Water Industries Ltd. (Japan), Veralto Corporation (Trojan Technologies) (U.S.), DuPont de Nemours, Inc. (U.S.), Dow Inc. (U.S.), BASF SE (Germany), 3M Company (U.S.), Pentair plc (U.K.), Kemira Oyj (Finland), Kingspan Group plc (Ireland), Toray Industries, Inc. (Japan), Calgon Carbon Corporation (U.S.), Thermax Limited (India), WSP Global Inc. (Canada), Burns & McDonnell (U.S.), BioMicrobics, Inc. (U.S.), Clean TeQ Water Limited (Australia), SWA Water Australia (Australia), WOG Technologies (India), SEPC Limited (India), Adroit Associates Private Limited (India), and Sauber Environmental Solutions Pvt. Ltd. (India).
How This Report Helps
Key Questions Answered