Deionized Water Systems Market Report 2026

The deionized water systems market size has grown strongly in recent years. It will grow from $8.39 billion in 2025 to $9.12 billion in 2026 at a compound annual growth rate (CAGR) of 8.7%. The growth in the historic period can be attributed to growing industrial water consumption, rising need for ultrapure water, expansion of pharmaceutical manufacturing, increasing electronics production activities, rising dependency on purified water processes.

The deionized water systems market size is expected to see strong growth in the next few years. It will grow to $13.26 billion in 2030 at a compound annual growth rate (CAGR) of 9.8%. The growth in the forecast period can be attributed to expansion of precision manufacturing industries, increasing pharmaceutical and biotech production, growing focus on stricter water quality standards, rising industrial modernization initiatives, increasing need for reliable purification technologies. Major trends in the forecast period include increasing adoption of high-purity water in industrial processes, growing demand for ultra-clean water in pharmaceuticals and electronics, rising use of deionized water in power generation and chemicals, expansion of advanced industrial water treatment facilities, strengthening focus on efficiency and system reliability.

The rising demand for renovation projects is expected to boost the growth of the deionized water system market going forward. Renovation projects involve activities aimed at upgrading or improving existing structures, such as repairing damage, replacing outdated components, or incorporating new features. Deionized water is widely used in renovation activities as a cleaning and rinsing agent, as it effectively removes dirt, residues, and contaminants from surfaces without leaving mineral deposits. It is also used for cooling equipment during renovation processes. For instance, in June 2024, according to Statistics Finland, a Finland-based government agency, household spending on renovations of dwellings and residential buildings reached EUR 5.2 billion in 2023, reflecting a 2.7% increase compared to 2022. Therefore, the growing number of renovation projects is driving the growth of the deionized water system market.

Major companies operating in the deionized water systems market are focusing on developing technologically advanced solutions, such as water circulation systems, to improve efficiency, lower operating costs, and comply with strict water quality requirements. Water circulation systems are designed to continuously move and recirculate water within specific processes, ensuring efficient usage while maintaining stable temperature and quality. For instance, in April 2023, Taiwan Semiconductor Manufacturing Company Limited, a China-based semiconductor manufacturer, introduced Hot DI Water Circulation System 2 for wafer cleaning applications to enhance energy efficiency and reduce water consumption in semiconductor production. The system significantly improves cleaning performance while saving approximately 388,000 kWh of electricity and 24,000 tons of purified water annually. Its modular design reduces the overall footprint by about 60%, enabling easier integration into cleanroom environments, and supports sustainable manufacturing by achieving an 80% reduction in deionized water usage compared to earlier systems.

In May 2023, Xylem Inc., a US-based water technology company, acquired Evoqua Water Technologies Corp for $7.5 billion. Through this acquisition, Xylem aims to establish a comprehensive global platform capable of addressing critical water challenges on a much larger scale. Together, the combined entity offers an extensive portfolio of products and services spanning the entire water cycle to meet mission-critical customer needs. Evoqua Water Technologies Corp is a US-based company specializing in water quality solutions, including filtration systems, intake rebuilding services, and deionized water systems.

Major companies operating in the deionized water systems market report are Veolia Water Technologies & Solutions, Nancrede Engineers Company Inc., US Water Systems Inc., Sigma-Aldrich, Evoqua Water Technologies Corp., Culligan Water, Ryan Herco Flow Solutions, Cole-Parmer, Applied Membranes Inc., Newater Technology Inc., W.D. Service Co. Inc., Puretec Industrial Water, Aqua Systems Inc., Besco Water Treatment Inc., GlobalSpec Inc., Frontier Water Systems LLC, Trebor International Inc., Total Water LLC, EMD Millipore, NU Aqua Systems, Kissane Water Conditioning Inc., PureAqua Inc., Complete Water Solutions, Dayton Water Systems, Winter Industrial Water Treatment.

North America was the largest region in the deionized water systems market in 2025. The regions covered in the deionized water systems market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the deionized water systems market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The deionized water system market includes revenues earned by entities by providing services such as high-purity water systems, industrial deionized water filter systems, and water filter systems. The market value includes the value of related goods sold by the service provider or included within the service offering. Only goods and services traded between entities or sold to end consumers are included.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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