The global deionized water system market, generated sales amounting to USD 5,496.5 million in 2020. The market observed a 7.5% year-on-year growth in 2024 and is estimated to reach USD 7,861.6 million in 2025. Over the assessment period from 2025 to 2035, the global market is projected to expand at a compound annual growth rate (CAGR) of 7.6%, culminating in a market size of USD 16,339.1 million by the end of 2035.
Deionized water system is very crucial set up in industries which require high quality pure water with-in various manufacturing processes. Semiconductor, pharmaceuticals, battery, food and beverages and personal care product manufacturing companies are few of the key users of this equipment.
These are kind of advanced filtration equipment which remove unwanted ions or particles from water. The commonly utilized process for this includes ion exchange where positively or negatively charged ions are removed from the water, thus making it very low or negligible in conductive properties.
These systems are available in various types such as bed configurations, capacities, flow rate, and modality for various end-use industries. Increasing quality and hygiene standards and ever-evolving advanced manufacturing processes need deionized water in large volumes, which in-turn is driving sales of deionized water system across the globe.
| Attributes | Key Insights |
|---|---|
| Estimated Market Value, 2025 | USD 7,861.6 million |
| Projected Market Value, 2035 | USD 16,339.1 million |
| Value CAGR (2025 to 2035) | 7.6% |
Industries require water in enormous volumes for various processes, with increasing usage rates, fresh water resources are becoming scarce and also leading to severe issues arising out of safe disposal and discharge in the environment. Quality of supply water as well as discharge water is important to meet environment protection guidelines and compliances. Removal of ions, particles and impurities from usable water are essential to meet quality production guidelines as well to discharge it safely in environment.
Agriculture, textile, pulp & paper, power, food and beverages are the key industries with high intensity of water usage while the rest being electronics, chemicals, pharmaceuticals and others. Pharmaceuticals and food industry utilize high quality water for product and drug manufacturing which are meant for direct consumption. Hence, requirement of pure and quality water becomes of paramount importance.
There are various guidelines and regulations formulated by governments across the globe to ensure best industry practices regarding use and disposal of water. Some examples include effluent treatment guidelines, clean water act, resource recovery and conservation act, water conservation guidelines and others.
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The table below presents the annual growth rates of the global deionized water systems industry from 2025 to 2035. With a base year of 2024 extending to the current year 2025, the report examines how the sector's growth trajectory evolves from the first half of the year (January to June, H1) to the second half (July to December, H2). This analysis offers stakeholders insights into the industry's performance over time, highlighting potential developments that may emerge.
These figures indicate the growth of the sector in each half year, between the years 2024 and 2025. The industry is expected to grow at a CAGR of 7.2% in H1-2024. In H2, the growth rate increases to 7.6%.
| Particular | Value CAGR |
|---|---|
| H1 2024 | 7.0% (2024 to 2034) |
| H2 2024 | 7.6% (2024 to 2034) |
| H1 2025 | 7.3% (2025 to 2035) |
| H2 2025 | 7.7% (2025 to 2035) |
Moving into the subsequent period, from H1 2025 to H2 2025, the CAGR is projected to slightly decrease to 7.1% in the first half and relatively increase to 7.7% in the second half. In the first half (H1), the sector saw an increase of 30 BPS while in the second half (H2), there was a slight increase of 10 BPS.
Growing concern towards corrosion prevention in process flows to drive installations of deionized water systems
Poor quality of water can result in reduction of operational efficiency of systems as it can lead to deposition of salt or pollutants in pipelines, tubes, vessel, closures or lids of the process components or systems. Maintenance of such systems require continuous or regular monitoring of process water as it can lead to malfunctioning of entire system.
Equipment degradation, corrosion or acidic water can negatively impact of process parameters or quality of final product. These issues pose severe threat towards industrial maintenance activities.
Use of deionized water system though incur significant capital expenditure for industries, however it is a necessity for few industries and can be beneficial as it brings down total cost of ownership, reduces downtimes, enhances service life of systems and ensures that sustainability goals are met with effectiveness. These systems are integrated with process equipment and are compatible with linings and non-metallic components to ease installation and integration operations.
The increasing focus on preventing corrosion is a major reason why industries are adopting deionized water systems. These systems help improve efficiency, maintain product quality, and meet environmental regulations. As water treatment technologies improve and regulations become stricter, this trend is likely to become even more prominent.
Innovative technologies propelling growth of deionized water systems
Citing the different requirements of these systems across industries; various configurations, designs and incorporation of sensor and AI technologies have been incorporated by key manufacturers to differentiate their product offerings and meet varied industry requirements and needs.
Advancement in zero liquid discharge technologies have led to use of advanced filtration and recycling technologies which almost recycle entire process water has necessitated use of sophisticated deionized water systems to meet high quality requirements.
Use of Nano filtration technologies, self-cleaning filters, bio-degradable chemicals for filtration membrane construction and IoT enabled water quality monitoring are some of the advanced features and innovations that drive adoption of these systems across industries. As availability of water becomes scarce alongside of increasing urbanization, the importance of equipment that help in ensuring optimum and quality usage of water will gain prominence.
Rising demand for pure water in cleaning, rinsing, and solvent applications fuels demand for deionization systems
Water being one of the most versatile solvents, it is used across industries for specific formulations and as an intermediate. Medical device manufacturing and healthcare set-ups require pure water for usage into cleaning and rinsing solution to avoid any contamination and maintain hygiene standards. Apart from medical device manufacturing, it is used in laboratory equipment washing, wafer cleaning and etching applications and cleaning of process pipelines in the industries.
Dyes, pigments, coatings, pulp and paper industries utilize pure water to formulate specific solutions or a solvent for various processes. Low quality of water can lead to degraded quality of products and impact on viability of the manufacturing methods. Industries like food, pharmaceuticals and personal care products utilize pure water as an ingredient in products, where a slight deviation from desired quality can lead to severe contamination of product or even can lead to loss of production output.
As industries are vigilant about ensuring process parameters, product quality and productivity measures, utilization of pure process water becomes utmost important and this concern acts as a key driver boosting sales of deionized water system across industries.
Ability of these systems to be configured for selective ion recovery, opens up new market opportunities for companies
Deionized water systems capture calcium, magnesium, lithium, sodium, copper, nickel and other ions from water during the purification process. These ions are of crucial uses in various end use industries. For example, lithium ions are used during battery manufacturing processes, magnesium is used for production of alloys, calcium and potassium can be used as cement and fertilizer additive respectively. Apart from these, heavy metal ions separated from water can be used for manufacturing of electrical and electronic components.
Recovery of these critical ions not only helps in ensuring sustainability but also helps in strong building up of circular economy. The recycling of waste water becomes more effective and poses minimal threat to environment by practicing safe discharge standards. By capturing these ions and putting back into production cycles ensure that the waste management is optimised and environmental protection compliances are met to the best possible extents.
These recycling activities present opportunity to develop new revenue streams for the companies to make better use of by-products separated out during the process. This win-win situation helps the market participants to utilize and adopt these deionized water systems effectively into their industrial processes and create ample growth opportunities for sales of these systems in near future.
Modular and scalable designs of deionized water systems gaining significant attention across industries
Demand and requirements of this system varies across industries and with the expansion of industrial operations, it becomes very important that these systems integrate well with new or existing production lines, such that flow of operations remain uninterrupted.
Compact, modular and compatible designs allow end-users to scale the operations on demand or as per the volatility of industrial operations. These designs are also made to supplement portability of these machines. During the maintenance operations, portable deionized water systems are utilized to reduce operational downtimes.
Capitalizing on this trend, Veolia Water Technologies introduced mobile water services portfolio for serving pharmaceutical, life sciences and cosmetics industries, particularly in European region. These services or equipment set-ups aim at meeting industry compliant purified water requirement and liquid waste management solutions on rental or contractual basis.
Such solutions offer flexibility and scalability to end users without bothering much on the technological expertise for the same. This trend is likely to inflate in the coming years and provide positive impact on the sales of deionized water systems across the globe.
The industry is fairly organized and about half of the market is captured by the established players across the globe. These systems are technologically advanced and sophisticated in construction involving high degree of expertise.
Hence, the barriers to entry for new market participant is quite high in this market. About 45 to 50% of the market is anticipated to be marked by key companies which are referred as tier-I players. Example of such companies include Evoqua, Veolia and Suez Water Technologies.
Next level of market players comprise 25 to 30% of the market. These companies are established with regional stronghold and industry specific technological expertise. Such players are referred as tier-II players in the study. Example of such companies include Pentair, Culligan and Lenntech.
The remaining 20 to 25% of the market is occupied by emerging or small to medium scale operation companies, which are predominantly catering to domestic market. These companies have limited reach and have niche offerings. Such companies are referred as tier-III players in the study. Example of such companies include AquaPhoenix, Pure Aqua and Genesis Water Technologies.
Historically, sales of deionized water system witnessed a CAGR of 7% during 2020 and 2024. The demand for these systems were marginally reduced from manufacturing industries, however, pharmaceutical, water treatment and food industries witnessed considerable increase in the overall output during this period.
Thus, keeping the demand at substantial magnitude. Some of the underlying drivers during this period include increasing vaccine production, upsurge in health supplements demand and improving sanitation standards across the globe.
Demand for these systems is anticipated to remain consistent and reflect CAGR of 7.3% during the assessment period 2025 to 2035. The changing climatic conditions, reduction in fresh water availability, increasing emphasis on environment protection and stringent regulations are further expected to positively influence demand for deionized water systems across industries.
Increasing adoption of advanced filtration technologies and upgradation of existing water infrastructure will in-turn boost the sales of these systems in the coming decade.
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Sales of deionized water systems primarily depend upon extent on industrialization, developing water treatment sector and enforcement of environmental protection regulations and acts in respective countries. These primary factors largely impact on the market development across countries. Following table provides an overview about growth potential assessment for some of the key countries:
| Countries | Value CAGR (2025 to 2035) |
|---|---|
| USA | 4.5% |
| China | 6.3% |
| Germany | 3.8% |
| India | 6.8% |
| Saudi Arabia | 7.1% |
USA consumer market for deionized water systems is significant owing to the strong demand from industries like power generation, semiconductors and pharmaceuticals. Valued over USD 500 Billion, USA pharmaceutical industry requires ultrapure water for drug formulation, ensuring compliance with stringent FDA standards. Similarly, the USA semiconductor industry, contributing USD 258 billion to GDP in 2022, relies heavily on ultrapure water systems for chip manufacturing.
These demands are propelling innovations like Evoqua’s advanced ion exchange systems and Veolia’s AI-enabled water monitoring technologies. In response to the CHIPS Act, companies have announced over USD 231 billion in commitments in semiconductor and electronics investments in the country.
Major companies like DuPont, Pall Corporation & Evoqua Water Techologies are competing in the market with the strategies such as merger & acquisition. For example, Veolia North America (VNA), a wholly owned subsidiary of Veolia Group, announced the integration of its businesses with Suez's assets in the USA and Canada to establish diverse portfolio & service expansion.
China has established itself as a global leader in the global market owing to its robust administration support, strict manufacturing guidelines, and dominance in manufacturing sectors such as electronics, semiconductors & heavy manufacturing. China holds more than 30% of the world's semiconductors production, an industry that requires ultrapure water to perform its precise operations like wafer production.
The demand for deionized water is significantly influenced by the electronics manufacturing industry, and is expected to grow with 12% CAGR during the forecast period. Domestic competition and industry players like Beijing Origin Water Technology are focusing on scalable and reasonably priced strategies for the domestic market.
Further support from the Made in China 2025 policy by the Chinese government, focusing on independence and advanced manufacturing, adds to this encouragement towards adoption of ultrapure water systems within high-tech manufacturing companies.
In order to comply with environmental objectives, regulations such as Water Pollution Prevention and Control Action Plan encourages businesses to invest in cutting-edge filtration and ion-exchange technologies. Due to the presence of large number of small players, the market is highly competitive, impacting on profit margins and pricing strategies.
Germany, the largest chemical producer in Europe has a yearly sales over USD 200 Billion, utilizes ultrapure water systems in processes like synthesis & cooling. The pharmaceutical industry's demand for high quality deionized water for sterile manufacturing settings in accordance with GMP requirements ensures a consistent demand.
Companies like Siemens AG and BASF are investing in cutting-edge water purification technologies, which include IoT-enabled systems that monitor the water in real time. Recent developments have included smart deionized water systems developed by Siemens, specifically tailored for precision industries. Sustainability also plays a huge role; companies are adopting eco-friendly membranes and recycling methods to align with the ambitious goals of renewable energy in Germany.
Regulatory frameworks, such as DIN EN ISO 15883 for sterilization and EU directives on water quality, make companies push toward higher quality & standards. Government subsidies for clean water initiatives are another incentive for engaging companies in innovation and market growth.
This section contains information about leading segments in the global market exhibiting highest value share during the forecast period.
| Segment | Capacity Type (Medium Capacity) |
|---|---|
| Value Share | 48% |
Based on Capacity Type segment, medium-capacity segment holds the largest value share of 48% in the deionized water system market, primarily because of its versatility and widespread application particularly suitable for industries such as pharmaceuticals, electronics, and food and beverage, where consistent water purity is critical but operational scales are moderate. Companies like Evoqua and Veolia offer compact, effective systems that satisfy regulations-whether it be the FDA or ISO-in size. Most of them have a modular design which is useful in scaling with increasing needs.
Innovative breakthroughs of this category are energy efficient ion exchange technology and membrane filtration systems. For Instance, DuPont's FilmTec, improves water recovery with less waste generated while maintaining sustainability issues.
While the segment competes with high-capacity systems in large-scale industries, its balance of performance and cost positions it as a preferred choice across multiple sectors, driving its significant market share.
| Segment | Configuration (Mixed Bed Deionization System) |
|---|---|
| Value Share | 32% |
Based on Configuration segment, mixed bed deionization systems, accounts for 32% of the value share. It is a major component in the deionized water system market which provides the highest purity of water critical in semiconductors, pharmaceuticals, and power generation industries.
This cation and anion exchange resins-integrated unit in a single design provides efficient, precise removal of ions. It therefore ensures the minimum possible conductivity at a level of 0.055 µS/cm and can meet even very strict industrial standards. Mixed bed systems from Evoqua Water Technologies and Pall Corporation are also among the state-of-the-art systems featuring real-time monitoring as well as automatically controlled regeneration cycles.
Recent developments in mixed bed systems have focused on sustainability and operational efficiency. For instance, automated resin regeneration technology cuts down water and chemical usage, thus alleviating environmental concerns. Such systems also find niche applications in laboratories and healthcare facilities, thereby increasing their market presence.
The deionized water system market is moderately fragmented, with key players holding around 35%-40% share in the market, along with the presence of many medium- and small-scale manufacturers. Key manufacturers are engaged in technological advancements focusing on improved features such as performance, and cost-effectiveness.
By Capacity is categorized into low capacity, medium capacity and high capacity.
By Configuration category is classified into Two-bed deionization and Mixed-bed deionization.
By Buyer Type category is classified into commercial and industrial.
By End-use Industry is categorized into Laboratory Research, Printing and Publishing, Metal & Mechanical Plating, Pharmaceutical, Bio-Medical, Power Generation, Aerospace and Engineering, Others.
Leading regions included in the study are North America, Latin America, East Asia, South Asia Pacific, Western Europe, Eastern Europe and Middle East and Africa.
The Deionized Water Systems was valued at USD 6,809.1 million in 2023.
Rising industrial applications, regulatory standards, and technological advancements will drive deionized water system demand.
The demand is projected to reach USD 15,185.1 million by 2034.
Mixed-bed deionization is expected to Technology segment during the forecast period.
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