Water and Wastewater Treatment Market (2026-2036)
The global Water and Wastewater Treatment Market was valued at USD 381.80 billion in 2025. This market is expected to reach USD 738.56 billion by 2036 from an estimated USD 404.71 billion in 2026, registering a CAGR of 6.2% during the forecast period (2026-2036).
- Published
- Sep 2026
- Pages
- 407
- Format
- PDF + Excel
- Report ID
- MR-326
- Base year
- 2025
- 2025 · BASELINE
- $381.8B
- 2036
- $738.6B
- CAGR 2026–2036
- 6.2%
2025 baseline · 2026–2036 forecast at 6.2% CAGR · hover a bar for the value
Key highlights
The global Water and Wastewater Treatment Market is projected to reach USD 738.56 billion by 2036, driven by urbanization, stricter treatment regulations, freshwater scarcity, desalination and reuse, and the public health burden of unsafe water.
Asia-Pacific is expected to account for the largest market share in 2026 and is also projected to register the fastest growth during the forecast period.
Large service gaps persist worldwide. According to the WHO/UNICEF Joint Monitoring Programme, 2.1 billion people still lacked safely managed drinking water and 3.4 billion lacked safely managed sanitation in 2024, although safely managed sanitation coverage rose from 48% to 58% between 2015 and 2024.
By offering, Operation & Maintenance Services are expected to account for the largest market share, whereas Process Control & Automation is projected to witness the fastest growth through 2036.
The U.S. Environmental Protection Agency estimates that U.S. drinking water systems need USD 625 billion and wastewater and stormwater systems need USD 630.1 billion of investment over 20 years, a combined need of more than USD 1.25 trillion.
Water scarcity is turning treatment into a source of supply. Saudi Arabia expanded its desalination capacity from 4.6 million cubic meters per day in 2016 to more than 16 million cubic meters per day by the end of 2025, and Chinese cities used more than 22 billion cubic meters of recycled water in 2025.
Report summary
| Particulars | Details |
|---|---|
| Forecast Period | 2026-2036 |
| Base Year | 2025 |
| Estimated Year | 2026 |
| CAGR (Value) | 6.2% |
| Format | PDF, Excel & Cloud Portal · 407 pages |
| Market Size (Value) in 2026 | USD 404.71 Billion |
| Market Size (Value) in 2036 | USD 738.56 Billion |
| Segments Covered | By Type: Wastewater Treatment, Water Treatment. By Offering: Operation & Maintenance Services; Process Control & Automation; Treatment Technologies [Membrane Separation & Filtration (Reverse Osmosis (RO) Membranes, Ultrafiltration (UF) Membranes, Microfiltration (MF) Membranes, Nanofiltration (NF) Membranes, Other Membrane Separation & Filtration Technologies), Sludge Management, Activated Sludge, Clarification, Activated Carbon (Granular Activated Carbon, Powdered Activated Carbon, Other Forms), Chlorination, Industrial Demineralization, Membrane Bioreactor (MBR), UV & Ozone, Dissolved Air Flotation, Other Treatment Technologies]; Design, Engineering, and Construction Services; Treatment Chemicals. By Application: Municipal Applications, Industrial Applications (Food & Beverage, Pharmaceuticals & Chemicals, Power Generation, Pulp & Paper, Oil & Gas, Mining, Petrochemicals, Semiconductors, Other Industrial Applications). |
| Countries Covered | Asia-Pacific: China, Japan, India, South Korea, Indonesia, Malaysia, Australia, Thailand, Vietnam, Singapore, New Zealand, Philippines, Taiwan, Rest of Asia-Pacific. North America: U.S., Canada. Europe: Germany, Spain, France, U.K., Italy, Poland, Switzerland, Sweden, Belgium, Denmark, Rest of Europe. Latin America: Mexico, Brazil, Chile, Argentina, Rest of Latin America. Middle East & Africa: South Africa, Saudi Arabia, UAE, Iran, Kuwait, Rest of Middle East & Africa. |
| Key Companies | Dow Inc., BASF SE, Veolia Environnement SA, SUEZ SA, DuPont de Nemours, Inc., Xylem Inc., 3M Company, Pentair plc, Kemira Oyj, Kingspan Group plc, Kurita Water Industries Ltd., BioMicrobics, Inc., Thermax Limited, WOG Technologies, SWA Water Australia, Burns & McDonnell, Adroit Associates Private Limited, Sauber Environmental Solutions Pvt. Ltd., SEPC Limited, Calgon Carbon Corporation, Veralto Corporation, Clean TeQ Water Limited, Ecolab Inc., Toray Industries, Inc., and WSP Global Inc. |
Report overview
Segments covered: type, offering, application.
The growth of this market is mainly driven by rapid population growth and urbanization, increasingly stringent water treatment regulations, the lack of freshwater resources and the resulting expansion of desalination and water reuse, and the increasing prevalence of waterborne diseases. However, the high costs of installing, maintaining, and operating water and wastewater treatment infrastructure restrain the growth of this market.
Furthermore, the rising demand for energy-efficient and advanced water treatment technologies and the growth of industrial water reuse for semiconductor manufacturing and data centers are expected to offer growth opportunities for the stakeholders in this market. However, the upgrading and repair of aging water infrastructure remains a major challenge impacting the growth of this market. Additionally, long-term performance-based operation and maintenance contracts, the digitalization of water utilities, and investment in PFAS and micropollutant removal are prominent trends in this market.
The Water and Wastewater Treatment Market comprises the technologies, chemicals, services, and systems used to produce safe drinking water and process water and to collect, treat, reuse, or dispose of municipal and industrial wastewater. The market value covers operation and maintenance services, process control and automation, treatment technologies, design, engineering, and construction services, and treatment chemicals. Treatment technologies include membrane separation and filtration, sludge management, activated sludge, clarification, activated carbon, chlorination, industrial demineralization, membrane bioreactors, UV and ozone, and dissolved air flotation. The market ecosystem extends from suppliers of membranes, resins, activated carbon, chemicals, pumps, and instruments to technology and equipment manufacturers, engineering and construction firms, plant and network operators, municipal utilities, and industrial end users.
The market is experiencing steady growth supported by three foundations: the gap in basic water and sanitation services, the tightening of treatment standards in developed economies, and the rising water needs of industry. According to the WHO/UNICEF Joint Monitoring Programme, 2.1 billion people, one in four worldwide, still lacked safely managed drinking water in 2024, including 106 million who drank untreated surface water, and 3.4 billion lacked safely managed sanitation. Between 2015 and 2024, 961 million people gained safely managed drinking water and 1.2 billion gained safely managed sanitation, yet the need for new treatment capacity continues to expand in developing economies.
The scale of investment required is far larger than current spending. The OECD and the World Bank estimate that global water infrastructure needs will reach USD 6.7 trillion by 2030 and could rise to USD 22 trillion by 2050. In the U.S., the Environmental Protection Agency estimates a combined drinking water, wastewater, and stormwater investment need of more than USD 1.25 trillion over 20 years, compared with about USD 50 billion of water funding in the Bipartisan Infrastructure Law. The market is therefore constrained less by demand than by the ability of utilities and governments to finance projects, which favors private operation, performance-based contracts, and technologies that reduce lifecycle costs.
Regulation is reshaping spending in developed markets. In April 2024, the U.S. EPA set limits of 4 parts per trillion for PFOA and PFOS in drinking water, and in May 2026 it proposed to give water systems the option of two additional years, to April 2031, to comply. In the European Union, the recast Urban Wastewater Treatment Directive (EU) 2024/3019 entered into force in January 2025, requiring tertiary nitrogen and phosphorus removal at all plants of 150,000 population equivalent or more by 2039 and quaternary treatment for micropollutants at large plants by 2045.
Water scarcity and industrial demand are widening the market beyond conventional municipal treatment. About 60% of Saudi Arabia's water supply now comes from desalination, and China has set a national target of reusing at least 25% of treated sewage in water-deficient cities. Veolia estimates that the combined water use of data centers and semiconductor manufacturing will equal that of 46 million people by 2030. Together with national coverage programs such as AMRUT and the Jal Jeevan Mission in India, these developments point to sustained growth in water and wastewater treatment, moderated by the funding capacity of utilities and the cost of renewing aging assets.
Market dynamics
11 factors across 5 forcesRapid Population Growth, Urbanization, and Stringent Water Treatment Regulations
Rapid urban growth combined with tightening regulation is a major factor driving the Water and Wastewater Treatment Market. Urban growth concentrates water demand and wastewater generation in cities that often lack matching treatment capacity; according to the WHO/UNICEF Joint Monitoring Programme, urban drinking water coverage stayed flat at 83% between 2015 and 2024. In India, 27 million urban household tap connections, 5,611 million litres per day of water treatment capacity, and 7,380 million litres per day of sewage treatment capacity had been created under the AMRUT and AMRUT 2.0 missions by July 2026. At the same time, the recast EU Urban Wastewater Treatment Directive lowers the threshold for collection and treatment to agglomerations of 1,000 population equivalent and introduces tertiary and quaternary treatment obligations.
Lack of Freshwater Resources
Water scarcity is pushing utilities and industries toward desalination and reuse. According to its National Transformation Program, Saudi Arabia expanded its desalination capacity from 4.6 million cubic meters per day in 2016 to more than 16 million cubic meters per day by the end of 2025. Veolia reports that 18% of installed desalination capacity worldwide was built using its technologies and plans to double the desalination capacity it operates by 2030. Water reuse is becoming a second source of supply, with Chinese cities using more than 22 billion cubic meters of recycled water in 2025, according to the Ministry of Housing and Urban-Rural Development. This scarcity is driving demand for membranes, pretreatment, and advanced treatment, and is translating into multi-decade treatment and operation contracts.
Increasing Prevalence of Waterborne Diseases
Unsafe water and sanitation remain a major cause of disease. According to the WHO/UNICEF Joint Monitoring Programme, people in least developed countries are more than twice as likely as those in other countries to lack basic drinking water and sanitation services, and 354 million people still practised open defecation in 2024. Governments are responding with treatment and monitoring investments. India had 1,110 sewage treatment plants with 40,703 million litres per day of capacity operating under the Swachh Bharat Mission-Urban by August 2026, and the recast EU directive requires member states to monitor wastewater for public health parameters. These measures continue to support demand for disinfection, filtration, and sanitation systems.
Table of contents
11 chapters · 172 sections · 407 pages · click to expandSegmental analysis
| Segment | Largest share (2026) | Fastest growth (2026–2036) |
|---|---|---|
| By Type | — | — |
| By Offering | Operation & Maintenance Services | Process Control & Automation |
| By Treatment Technology | Membrane Separation & Filtration | Membrane Bioreactor (MBR) |
| By Application | Municipal Applications | Semiconductors |
By Type
- The Wastewater Treatment segment is expected to account for the larger share of the market.
- The large share of this segment is mainly due to sanitation coverage programs in emerging economies, such as the AMRUT and Swachh Bharat missions in India, stricter nutrient and micropollutant rules in Europe, and the reuse of treated wastewater as a new source of water supply.
- This segment is also projected to register the higher CAGR during the forecast period.
- The Water Treatment segment is expected to grow steadily, supported by desalination and PFAS removal.
By Offering
- The Operation & Maintenance Services segment is expected to account for the largest market share, owing to the recurring cost of running plants and networks over their long lives and the growth of long-term performance-based contracts.
- However, the Process Control & Automation segment is projected to register the highest CAGR during the forecast period, driven by the adoption of digital monitoring, AI-based optimization, and smart metering by utilities.
By Treatment Technology
- The Membrane Separation & Filtration segment is expected to account for the largest market share, supported by the use of reverse osmosis, ultrafiltration, microfiltration, and nanofiltration membranes in desalination, reuse, and industrial water treatment.
- Reverse Osmosis (RO) Membranes are expected to account for the largest share of this segment.
- However, the Membrane Bioreactor (MBR) segment is projected to register the highest CAGR during the forecast period, driven by reuse projects and the need for compact, high-quality wastewater treatment.
By Application
- The Municipal Applications segment is expected to account for the larger market share, supported by national coverage programs, the recast EU directive, and the replacement of aging networks.
- However, the Industrial Applications segment is projected to register the higher CAGR during the forecast period.
- Industrial applications are further segmented into Food & Beverage, Pharmaceuticals & Chemicals, Power Generation, Pulp & Paper, Oil & Gas, Mining, Petrochemicals, Semiconductors, and Other Industrial Applications.
- The Pharmaceuticals & Chemicals segment is expected to account for the largest share, while the Semiconductors segment is projected to register the highest CAGR, driven by new fabs and ultrapure water and reclamation needs.
Geographic analysis
Asia-Pacific
Largest shareIn 2026, Asia-Pacific is expected to account for the largest share of the global Water and Wastewater Treatment Market. The region combines the largest urban population growth in the world with rapid industrialization and severe water stress in many areas. China and India are building sewage treatment and reuse capacity at scale, while Taiwan, South Korea, Japan, Singapore, and Malaysia host much of the global semiconductor industry, which requires ultrapure water. India aims to cover all rural households with tap water by 2028 under Jal Jeevan Mission 2.0, and Singapore meets about 40% of its demand with NEWater. Asia-Pacific is also projected to register the highest CAGR during the forecast period.
North America
North America is expected to account for the second-largest share of the market, driven by aging infrastructure, PFAS regulation, and industrial investment, including semiconductor fabs and data centers. The U.S. EPA estimates combined drinking water, wastewater, and stormwater needs of more than USD 1.25 trillion over 20 years, and rehabilitation and PFAS treatment are expected to dominate regional investment over the forecast period.
Europe
Europe is expected to account for a significant share of the market. Regional growth is regulation-led, shaped by the recast Urban Wastewater Treatment Directive, which must be transposed by July 2027, and by PFAS limits for drinking water. The European Commission estimates a funding gap of EUR 23 billion per year, and the European Investment Bank signed a record EUR 5 billion of water financing in 2025.
Latin America
The Middle East & Africa and Latin America are expected to account for smaller shares of the market.
Middle East & Africa
Demand in the Middle East & Africa is driven by desalination and reuse in the Gulf states and rehabilitation needs in Africa, while Latin America is driven by sanitation targets in Brazil, which requires 99% water supply and 90% sewage collection and treatment coverage by 2033, and by the shift of Chilean miners to desalinated seawater.
Competitive landscape
The global Water and Wastewater Treatment Market is fragmented, with no single company holding a dominant position because municipal services are delivered largely by public utilities. The market combines global operators, industrial water and chemical companies, water technology companies, membrane and activated carbon producers, engineering and construction firms, and specialist providers of decentralized and industrial treatment. Market participants compete primarily on lifecycle cost, regulatory compliance, proven performance and references, breadth of portfolio, local service capacity, financing terms, and digital monitoring capabilities.
Leading companies are strengthening their positions in industrial water, desalination, analytics, and PFAS treatment. Consolidation and portfolio focus accelerated in 2025 and 2026: Veolia took full ownership of Water Technologies and Solutions in June 2025, Ecolab completed the acquisition of 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. Toray opened an integrated reverse osmosis membrane plant in Saudi Arabia in November 2025. Long-term contracts and agreements, acquisitions, capacity expansions, and divestments of non-core businesses remain the key strategies adopted by major companies.
The report provides a comprehensive competitive assessment of the leading companies operating in the global Water and Wastewater Treatment Market. The key players profiled in the report include Dow Inc. (U.S.), BASF SE (Germany), Veolia Environnement SA (France), SUEZ SA (France), DuPont de Nemours, Inc. (U.S.), Xylem Inc. (U.S.), 3M Company (U.S.), Pentair plc (U.K.), Kemira Oyj (Finland), Kingspan Group plc (Ireland), Kurita Water Industries Ltd. (Japan), BioMicrobics, Inc. (U.S.), Thermax Limited (India), WOG Technologies (India), SWA Water Australia (Australia), Burns & McDonnell (U.S.), Adroit Associates Private Limited (India), Sauber Environmental Solutions Pvt. Ltd. (India), SEPC Limited (India), Calgon Carbon Corporation (U.S.), Veralto Corporation (U.S.), Clean TeQ Water Limited (Australia), Ecolab Inc. (U.S.), Toray Industries, Inc. (Japan), and WSP Global Inc. (Canada).
- Dow Inc.
- BASF SE
- Veolia Environnement SA
- SUEZ SA
- DuPont de Nemours, Inc.
- Xylem Inc.
- 3M Company
- Pentair plc
- Kemira Oyj
- Kingspan Group plc
- Kurita Water Industries Ltd.
- BioMicrobics, Inc.
- Thermax Limited
- WOG Technologies
- SWA Water Australia
- Burns & McDonnell
- Adroit Associates Private Limited
- Sauber Environmental Solutions Pvt. Ltd.
- SEPC Limited
- Calgon Carbon Corporation
- Veralto Corporation
- Clean TeQ Water Limited
- Ecolab Inc.
- Toray Industries, Inc.
- WSP Global Inc
Expert perspectives
The Water and Wastewater Treatment Market is constrained less by demand than by the ability to pay for it. The need is not in question: 2.1 billion people lack safely managed drinking water, the U.S. alone faces more than USD 1.25 trillion of investment needs over 20 years, and the OECD and the World Bank put global water infrastructure needs at USD 6.7 trillion by 2030. Yet the EPA's proposal to extend PFAS compliance to 2031 shows that regulation does not automatically produce treatment capacity when utilities cannot finance it.
Three structural changes are expected to shape competitive positions through 2036. First, treatment is becoming a source of supply rather than only a compliance cost, as desalination in the Gulf states and reuse in China and Singapore demonstrate. Second, the business model is shifting from equipment sales to long-term, performance-based service contracts, which rewards companies that can combine design, chemicals, digital controls, and operation. Third, industry is becoming a faster-growing source of demand than municipalities, led by semiconductor fabs and data centers that require ultrapure water and reclamation.
For companies planning entry or expansion, the most attractive positions over the forecast period are likely to be found in process control and automation, membrane bioreactors and advanced membranes, PFAS treatment and carbon reactivation, ultrapure water for semiconductors, and operation and maintenance contracts in Asia-Pacific and the Middle East. The principal risk is funding: suppliers that depend on municipal capital projects remain exposed to regulatory timelines and public budgets, regardless of the underlying need.
Customer perspectives
Insights gathered during primary interviews with municipal utility managers and industrial water buyers operating in this market highlight where purchasing priorities are shifting. The following perspectives reflect recurring themes raised across these discussions.
“This reflects the growing preference for long-term service contracts and the weight placed on lifecycle cost and proven performance in municipal procurement.”
“This indicates strong demand for integrated ultrapure water, reclamation, and digital monitoring solutions among high-technology industrial users.”
“This points to the expansion of performance-based operation and maintenance contracts, water loss reduction, and reuse in water-scarce markets.”
Frequently asked questions
The global Water and Wastewater Treatment Market is estimated at USD 404.71 billion in 2026.
Cite this report
Meticulous Research. (2026). Water and Wastewater Treatment Market - Global Opportunity Analysis and Industry Forecast (2026–2036) (Report No. MR-326). Meticulous Market Research Pvt. Ltd. https://www.meticulousresearch.com/product/water-and-wastewater-treatment-market-5026