Water Disinfection Market - Strategic Insights and Forecasts (2026-2031)

The Global Water Disinfection Market is set to reach USD 36.2 billion in 2031, growing at a CAGR of 3.6 % from USD 30.4 billion in 2026.

North America is the fastest-growing region of the water disinfection market, driven by EPA regulatory enforcement, PFAS treatment investments, wastewater reuse expansion, smart water infrastructure upgrades, AI-enabled monitoring systems, and modernisation of aging municipal treatment facilities across the United States and Canada.

• By Method, chlorination is expected to grow rapidly due to low operational cost, residual protection capability, and expanding municipal disinfection infrastructure globally.

• By End-User, municipal is expected to grow due to rising urban water demand, wastewater treatment investments, and stricter public-health regulations worldwide.

• By Application, drinking water treatment is expected to grow due to increasing contamination concerns, aging pipelines, and government-led potable water safety initiatives.

Market Dynamics

Drivers

• Growing Urbanization and Industrialization

The rapid growth of urban areas and industries has led to an increasing demand for effective and efficient water disinfection systems for municipal, commercial, and industrial applications. According to the United Nations 2025 World Urbanization Prospects (2025 Revision), around 45% of the global population (almost 3.7 billion out of a total of 8.2 billion) currently reside in urban settings. This number is projected to increase significantly by 2050.

• With urban areas expanding rapidly, the pressure on centralized drinking water delivery systems, municipal sewage treatment facilities, and recycled water systems is growing significantly. This will facilitate further adoption of ultraviolet (UV) disinfection systems, chlorination, ozonation, and advanced oxidation processes. Urban areas generate much larger volumes of municipal wastewater than smaller cities or towns. This leads to a higher risk of contamination from pathogens, pharmaceutical products, and man-made chemical pollutants. Consequently, there will be an increasing need for governments to improve the standards for disinfecting municipal water before it is discharged back into the environment.

• In addition, as more industries grow in the sectors of semiconductors, food processing, chemicals, pharmaceuticals, mining, and power generation, the quantity of freshwater that they withdraw and the total volume of wastewater that they discharge will continue to grow. As indicated by the OECD's water withdrawal indicators, global demand for water in the industrial and energy sectors will continue to increase due to the need to manufacture goods and provide cooling.

• AI is improving water disinfection efficiency through predictive monitoring, contamination detection, and automated treatment optimization. In 2025, the U.S. EPA expanded AI governance and AI-based operational use cases for environmental and water infrastructure management, while India’s DST introduced AI-enabled wastewater purification technology for removing industrial pollutants and dyes.

• In the Asia-Pacific region, particularly in India and China, the establishment of new urban manufacturing corridors and smart city development projects will require significant investments in the construction of facilities to treat industrial effluent and reuse municipal wastewater.

• According to United Nations urbanization projections, the degree of urbanization class for cities is indexed at 104 in 2025. It is projected to reach 127 by 2050, reflecting sustained urban population expansion and rising pressure on municipal infrastructure.

• This trend is highly relevant for the water disinfection market, as growing urban density increases demand for potable water treatment, wastewater recycling, sewage disinfection, and pathogen control systems. Expanding cities require larger centralized treatment facilities and decentralized smart disinfection networks to manage higher contamination loads generated by residential, commercial, and industrial activities.

• Stringent Microbial Compliance Standards: New international benchmarks for microbial removal efficiency are forcing utilities to upgrade from single-stage chlorination to multi-stage disinfection involving UV or Ozone to ensure 99.9% inactivation of coliforms.

• Industrial Water Reuse Quotas: In water-stressed regions, industrial sectors like semiconductors and power generation are re-engineering circuits to achieve 80–95% reuse thresholds, directly increasing demand for advanced polishing and disinfection systems.

• Infrastructure Investment Acts: Massive government funding, such as the US Infrastructure Investment and Jobs Act, provides the necessary capital for municipal operators to replace legacy systems with automated, AI-enabled disinfection technology.

• Rising Demand for Ultrapure Water: The boom in AI and data centers has surged demand for liquid cooling and electronics-grade water, requiring high-intensity UV and membrane-based disinfection to prevent biofouling in sensitive hardware.

Restraints and Opportunities

• High Capital Investment for Advanced Systems: The considerable financial outlay required for ozonation and advanced membrane bioreactors often exceeds the immediate budgets of smaller municipal operators in emerging economies.

• Absence of Disinfectant Residual in UV: Physical methods like UV do not impart a lasting residual effect, creating a structural reliance on secondary chemical disinfectants or high-integrity distribution pipework to prevent re-contamination.

• Specialized Technical Expertise Gap: Implementing and maintaining modern AI-optimized or UV-LED systems requires specialized technical skills, which can hamper adoption rates in regions with a limited O&M skill base.

• Decentralized Modular Treatment: The growth of decentralized and Point-of-Entry (PoE) systems presents a significant opportunity for modular disinfection units that can be deployed in remote or rapidly expanding urban peripheries.

Raw Material and Pricing Analysis

The global water disinfection market is heavily influenced by the pricing dynamics of both chemical reagents and the specialized materials used in physical disinfection hardware. Key chemical raw materials include liquid chlorine, sodium hypochlorite, and various coagulants/flocculants used in pre-treatment. Prices for these chemicals are interdependent on energy costs and the global supply chain for chlor-alkali products. Regional pricing variations are significant; for instance, the US market sees higher costs due to stringent EPA handling regulations, whereas Asia-Pacific prices are driven by massive production capacity and local oversupply cycles.

For physical systems, the supply chain for high-purity quartz (used in UV sleeves) and specialized electrodes (for ozone generators) is more concentrated. The recent transition to UV-LED technology has introduced dependency on the semiconductor supply chain, making pricing sensitive to global chip availability. Margin management strategies among major players now involve shifting toward "Disinfection-as-a-Service" or rental models for UV and ozone containers, which helps customers bypass high initial capital costs while allowing manufacturers to manage pricing volatility through long-term service contracts.

Supply Chain Analysis

Production concentration in the water disinfection market is moderately high, with a few multinational corporations controlling significant portions of the technology patents for UV, Ozone, and membrane systems. For example, the top five companies control approximately 35% of the broader water pollution control and treatment market. This concentration is particularly evident in the high-tech segments, such as UV-LED and AI-integrated dosing platforms, where R&D requirements act as a barrier to entry. Integrated manufacturing strategies often involve the production of both the disinfection hardware and the proprietary monitoring software to ensure system compatibility.

Logistical and transportation constraints impact the chemical segment more than the hardware segment due to the hazard classifications of bulk chlorine and ozone-generating reagents. These materials require specialized storage and pressurized transport, increasing regional risk exposure in areas with poor infrastructure. Conversely, hardware systems are increasingly modularized into shipping containers, allowing for rapid deployment. Energy intensity remains a critical factor for ozonation and high-pressure UV systems, leading to a structural demand for "intelligent controllers" that can adjust power consumption in real-time based on water flow and quality sensors.

Government Regulations

Key Developments

• May 2026: H2O Innovation Inc. announced the acquisition of bestUV, a Dutch manufacturer of ultraviolet (UV) water disinfection systems serving a wide range of applications and markets.

• April 2026: Kemin Industries, a global ingredient manufacturer that strives to sustainably transform the quality of life every day for 80 percent of the world with its products and services, debuted the EDIE™ Generation 2. This applicator is designed to deliver precision, connectivity, and automation in chlorine dioxide disinfection for livestock and poultry operations.

• November 2025: Veolia – Launched a comprehensive global solution for tackling PFAS, integrating diagnostics with advanced water treatment and waste management. This development matters structurally as it aligns disinfection protocols with new hazardous substance mandates.

• May 2025: Ecolab – Announced the commercial launch of 3D TRASAR™ Technology for Direct-to-Chip Liquid Cooling. This addresses the specific disinfection and cooling needs of the AI-driven data center boom, representing a new industrial growth vertical.

• In 2025, Veolia constructed the Stanton Water Treatment Plant, which is one of the largest PFAS treatment systems in the US and the Northeast, to ensure high-quality drinking water for over 100,000 residents. It also meets the EPA PFAS regulations and establishes a replicable model for cost-effective PFAS treatment projects globally.

Market Segmentation

By Method: Chlorination

Method-wise, the Global Water Disinfection market is segmented into Chlorination, UV Radiation, Ozonation, Membrane Filtration, and Others.

Chlorination is expected to witness significant growth, driven by its cost-effectiveness, ease of implementation, and ability to provide residual disinfection across water distribution systems. At the same time, UV radiation and ozonation are gaining traction due to their effectiveness in eliminating pathogens without forming harmful disinfection by-products. The growing emphasis on sustainable water treatment and stringent regulatory standards is further encouraging the adoption of advanced disinfection technologies, particularly in municipal and industrial applications. The chlorination segment is expected to show considerable growth, driven by its cost-effectiveness, residual disinfection capability, and widespread adoption across municipal and industrial water treatment systems.

• The increasing demand for safe drinking water and effective pathogen control is accelerating the adoption of chlorination, particularly in municipal water treatment systems where residual protection is critical for distribution networks.

• Rapid urbanization and population growth are driving the need for scalable and cost-efficient water disinfection solutions, with chlorination remaining one of the most widely deployed methods globally. According to the United States Census Bureau, between July 1, 2024, and July 1, 2025, the U.S. population grew by 1.8 million (0.5%) to reach 341.8 million.

• The growing focus on wastewater treatment and water reuse is supporting chlorination adoption for effluent disinfection, ensuring compliance with environmental discharge standards. Aligning with this, the wastewater treatment plants sector in India is poised for remarkable growth, with expectations of reaching a substantial USD 4.3 billion by 2025.

• The integration of AI-driven monitoring and control systems is enabling optimized chlorine dosing, real-time water quality analysis, and predictive maintenance of disinfection systems, improving operational efficiency and reducing chemical usage.

• Key companies, including Evoqua Water Technologies and Xylem Inc., are focusing on enhancing chlorination systems through improved chemical handling, automation, and integration with digital monitoring platforms.

• In line with this, in March 2026, aligned with World Water Day 2026, DuPont celebrated the commissioning of a new multi-tech water treatment plant in Baringo, Kenya, giving families in the rural community of Kampi Ya Samaki their first reliable source of clean and healthy drinking water.

Regional Analysis

North America: the US

• The United States stands at the forefront of water treatment and disinfection adoption, supported by strong investments in water infrastructure, advanced treatment technologies, and regulatory compliance frameworks driving market growth.

• The increasing demand for safe drinking water and effective wastewater management is accelerating the adoption of advanced water disinfection solutions across municipal and industrial sectors.

• According to the United States Environmental Protection Agency, stringent regulations such as the Safe Drinking Water Act and Clean Water Act are driving utilities to upgrade disinfection systems to meet evolving water quality standards.

• The country is witnessing significant investments to modernize existing water infrastructure, with federal and state-level funding programs supporting the deployment of advanced disinfection technologies.

• The rising focus on water reuse and recycling is increasing demand for reliable disinfection solutions, particularly in wastewater treatment and industrial applications. EPA estimated the national wastewater infrastructure needs to be $630 billion over 20 years.

• Moreover, as of April 2026, U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin launched the Water Reuse Action Plan (WRAP) 2.0 to harness the power of water reuse for American industry, the artificial intelligence (AI) future, and American energy dominance while strengthening public health protections and safeguarding the nation's water resources.

• The integration of AI and digital water management platforms is enabling real-time monitoring, predictive analytics, and automated optimization of disinfection processes, supporting utilities in improving efficiency, compliance, and resource management.

• The United States is seeing growing adoption of UV, ozone, and advanced oxidation technologies, alongside traditional chlorination, to improve efficiency and reduce disinfection by-products.

• Major companies such as Xylem Inc. and Evoqua Water Technologies are investing in advanced disinfection systems, automation, and digital monitoring solutions to strengthen market presence.

• Furthermore, recent developments include increasing deployment of smart water management systems and real-time monitoring platforms, enabling utilities to enhance operational efficiency and compliance.

• Ongoing regulatory support, infrastructure funding, and sustainability initiatives are further accelerating the adoption of advanced water disinfection solutions across the United States.

List of Companies

• Xylem Inc.

• Ecolab Inc.

• Veralto Corporation

• 3M Company

• DuPont de Nemours, Inc.

• BWT Holding GmbH

• Veolia Environnement S.A.

• LIT Water Technologies

• ProTeA S.r.l.

• IL Metronic Sensortechnik GmbH

• Lenntech BV

• ProMinent GmbH

• Jenfitch, Inc.

• AXEON Water Technologies

Founded in 1853, Veolia holds a strong position in water and waste management. It provides sustainable solutions for waste and wastewater treatment to industrial and municipal applications. In its Veolia water technologies segment serves 8,000 clients across 44 countries, with 11 dedicated R&I laboratories and 38 technological sites in FY2024.

The company offers Ozania Ozone System, Aquaray* Ultraviolet Systems, and AOP (Advanced Oxidation Process) System under its Disinfection and Oxidation product portfolio, consisting of a range of solutions used for process water, aquaculture, pulp bleaching, wastewater and reuse, flue gas scrubbing, ultrapure water, and chemical synthesis. Veolia desalinate 13 million m³ of water daily, across more than 44 countries.

Global Water Disinfection Market Scope: