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Cooling Water Treatment Chemicals Market: Data Centre Cooling Expansion, Power Generation Cooling System Demand, and Phosphate-Free Sustainable Treatment Adoption to Drive Above-Sector Market Expansion Through 2035

The global Cooling Water Treatment Chemicals Market was valued at USD 13.2 billion in 2025 and is projected to reach USD 22.683 billion by 2035, advancing at a CAGR of 6.2%. The market encompasses corrosion inhibitors (anodic, cathodic, organic, film-forming, polymeric), scale inhibitors (phosphonates, polyphosphates, carboxylates, polymer-based), biocides (oxidizing: chlorine, bromine, chlorine dioxide; non-oxidizing: glutaraldehyde, isothiazolinones, QAC, DBNPA), dispersants (polymeric, nonionic, anionic), pH adjusters, defoamers, and specialty treatment products — serving power, steel/mining/metallurgy, petrochemicals and oil & gas, food and beverage, textile, chemical manufacturing, pulp and paper, HVAC and district cooling, data centres, electronics and semiconductors, and pharmaceutical end-user industries.

The market’s 6.2% CAGR reflects data centre and AI computing facility cooling water treatment demand from hyperscale and colocation facility expansion, power generation cooling system treatment from above-historical energy infrastructure investment, and phosphate-free and low-phosphorus sustainable treatment programme adoption from water quality regulation and environmental compliance requirements.

Executive Snapshot

How is data centre and AI computing facility cooling sustaining above-sector market growth?
Hyperscale, colocation, and edge data centre cooling — primarily open recirculating tower cooling for servers, UPS, and power equipment — sustains corrosion inhibitor, scale inhibitor, and biocide cooling water treatment demand from the documented heat transfer efficiency, corrosion protection, and biofilm control requirement of data centre cooling tower water circuits at high-availability facility accounts. AI/GPU computing facility thermal load growth from above-historical electricity and cooling intensity sustaining data centre cooling water treatment programme procurement from facility management, water treatment service companies, and HVAC service contractor accounts.

What power generation cooling system demand is sustaining the largest end-user segment?
Thermal power plants — coal, gas, nuclear, combined-cycle — cooling tower and condenser cooling water treatment sustains the largest end-user segment from the large-volume cooling water treatment programme requirement of multi-megawatt thermal generation assets at utility power plant accounts. Cooling tower corrosion inhibitor, scale inhibitor, biocide, and Legionella control biocide treatment programme procurement from power utility and independent power producer (IPP) accounts sustaining the largest-volume cooling water treatment market segment.

How are phosphate-free sustainable treatment programmes driving above-commodity chemical growth?
EU Water Framework Directive, U.S. Clean Water Act nutrient loading limits, and industrial wastewater phosphorus discharge regulation driving phosphonate-free and low-phosphorus cooling water treatment programme adoption above conventional orthophosphate and polyphosphate corrosion inhibitor formulations sustains polymer-based, organic acid, and non-phosphorus scale and corrosion inhibitor demand from compliance-driven industrial accounts implementing phosphate discharge limit compliance.

What Legionella and biofilm control demand is sustaining biocide market growth?
Legionella pneumophila risk management regulation (ASHRAE 188, EU Legionella risk management codes, Australian AS/NZS 3666) — mandatory Legionella risk assessment and water safety plan at cooling tower and HVAC evaporative cooling accounts — sustaining oxidizing biocide (chlorine, bromine, chlorine dioxide) and non-oxidizing biocide (isothiazolinone, glutaraldehyde) procurement from facility management and water treatment service company accounts implementing risk-based Legionella control programmes.

How is petrochemical and oil refinery cooling water treatment sustaining above-sector industrial demand?
Petroleum refinery, olefins plant, and petrochemical complex cooling tower and heat exchanger cooling water treatment — corrosion inhibitor, scale inhibitor, and biocide programmes protecting carbon steel, stainless steel, and copper alloy heat transfer surfaces — sustains above-HVAC cooling water treatment demand from the large-volume cooling water treatment programme requirement and high asset replacement cost motivation at refinery and petrochemical plant accounts.

Which cooling water treatment chemical segments are growing fastest?
Data centre cooling from AI computing expansion, phosphate-free polymer treatment from discharge regulation, non-oxidizing biocide from Legionella management, and district cooling system HVAC from built environment growth are the fastest-growing segments.

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Market Dynamics: Cooling Water Treatment Chemicals Market

  • Corrosion Inhibitors lead the By Type segment by value — film-forming organic and polymeric inhibitors commanding premium value from asset protection specification.: Within the By Type segmentation, Corrosion Inhibitors — anodic, cathodic, organic, film-forming, and polymeric — represent the highest-value segment from premium film-forming azole and polymeric corrosion inhibitor specification at power, petrochemical, and data centre cooling system accounts sustaining above-scale-inhibitor average selling price from asset protection specification.
  • Scale Inhibitors lead the By Type segment by volume — phosphonate and polymer scale inhibitor sustaining the largest-volume treatment chemical procurement.: Within the By Type segmentation, Scale Inhibitors — phosphonates (HEDP, ATMP, PBTC), polyphosphates, carboxylates, and polymer-based — lead volume from universal cooling water scale prevention specification across power, industrial, and HVAC cooling system accounts sustaining the largest-volume cooling treatment chemical category.
  • Power leads the By End-User Industry segment by value — thermal power plant cooling treatment sustaining the largest commercial value from large-volume cooling circuit treatment requirement.: Within the By End-User Industry segmentation, Power Generation — thermal, gas, nuclear, and combined-cycle power plants — commands the largest commercial value from large-volume cooling tower and condenser treatment programme procurement at utility power generation asset accounts.
  • Data Centres lead the fastest-growing By End-User Industry segment — AI computing expansion sustaining above-power growth from new hyperscale facility cooling treatment demand.: Within the By End-User Industry segmentation, Data Centres — hyperscale, colocation, enterprise, and edge data centres — represents the fastest-growing end-user from AI/GPU computing thermal load expansion sustaining above-historical cooling water treatment programme procurement from new and expanding data centre cooling tower accounts.
  • Non-Oxidizing Biocides lead the fastest-growing biocide segment — glutaraldehyde and isothiazolinone from Legionella management and oxidizing biocide resistance biofilm control.: Within the biocide category, Non-Oxidizing Biocides — glutaraldehyde, isothiazolinones, QAC, DBNPA — lead growth from Legionella risk management programme regulation and oxidizing biocide-resistant biofilm control requirement sustaining non-oxidizing biocide adoption at cooling tower, HVAC, and data centre cooling accounts.

Market Segmentation: Cooling Water Treatment Chemicals Market

By Type
  • Corrosion Inhibitors
  • Scale Inhibitors
  • Biocides
  • Dispersants
  • pH Adjusters & Stabilizers
  • Defoamers & Antifoaming Agents
  • Other Product Types
By Water Quality
  • Freshwater
  • Recycled Water
  • Treated Wastewater
  • Brackish Water
  • High-TDS Water
  • Process Water
  • Seawater
By Form
  • Liquid
  • Powder
  • Granules
  • Solid Blocks
  • Concentrated Solutions
  • Ready-to-Use Formulations
By Sales Channel
  • Direct Sales
  • Long-Term Contracts
  • Water Treatment Service Companies
  • Chemical Distributors
  • Industrial Chemical Suppliers
  • Online B2B Channels
By Cooling System
  • Open Recirculating Systems
    • Cooling Towers
    • Evaporative Cooling Systems
  • Closed Recirculating Systems
    • Closed-Loop Cooling
    • Chilled Water Systems
  • Once-Through Cooling Systems
  • Hybrid Cooling Systems
  • District Cooling Systems
By Treatment Objective
  • Corrosion Control
  • Scale Control
  • Microbial Control
  • Fouling Control
  • Foam Control
  • pH Control
  • Deposit Control
  • Heat-Transfer Efficiency
  • Water Conservation
By Chemistry
  • Phosphonate-Based
  • Polymer-Based
  • Phosphate-Based
  • Zinc-Based
  • Organic Acid-Based
  • Chlorine-Based
  • Bromine-Based
  • Quaternary Ammonium-Based
  • Isothiazolinone-Based
  • Glutaraldehyde-Based
  • Silicone-Based
  • Other Chemistries
By End User
  • Power
  • Steel, Mining & Metallurgy
  • Petrochemicals & Oil & Gas
  • Food & Beverage
  • Textile & Dyes
  • Chemical Manufacturing
  • Pulp & Paper
  • HVAC & District Cooling
  • Data Centers
  • Electronics & Semiconductors
  • Pharmaceuticals
  • Other Industries
By Geography
  • North America: United States, Canada, and Mexico
  • Europe:  Germany, U.K., France, Italy, Spain, Russia, Benelux, Nordics, and Rest of Europe
  • Asia Pacific: China, Japan, India, South Korea, Australia, New Zealand, Taiwan, South East Asia, and Rest of Asia Pacific
  • Latin America: Brazil, Argentina, Columbia, Chile, Peru, and Rest of Latin America
  • Middle East: Saudi Arabia, United Arab Emirates, Oman, Qatar, and Rest of Middle East
  • Africa: Nigeria, Egypt, Ethiopia, South Africa, and Rest of Africa

Key Growth Drivers: Cooling Water Treatment Chemicals Market

  1. Data centre and AI computing cooling tower from hyperscale facility expansion.: Hyperscale and colocation data centre cooling tower chemical treatment demand sustaining above-historical market growth from AI computing facility thermal load expansion.
  2. Power generation cooling system from thermal power plant operation and new energy infrastructure.: Large-volume cooling tower and condenser treatment programme at utility power generation accounts sustaining the largest-value end-user segment.
  3. Phosphate-free sustainable treatment from water quality discharge regulation.: EU Water Framework Directive, U.S. Clean Water Act, and phosphorus discharge regulation sustaining polymer-based and non-phosphorus treatment programme adoption above conventional phosphate alternatives.
  4. Legionella risk management regulation from ASHRAE 188 and EU/Australian risk management codes.: Cooling tower Legionella risk management regulatory compliance sustaining oxidizing and non-oxidizing biocide procurement from facility management and water treatment service company accounts.
  5. Petrochemical and refinery cooling system from large-volume industrial treatment demand.: Petroleum refinery and petrochemical complex cooling water corrosion and scale control sustaining above-HVAC industrial cooling treatment demand.

Regional Outlook: Cooling Water Treatment Chemicals Market

  • North America: United States and Canada anchor North American demand from power generation, data centre, and petrochemical cooling water treatment. Veolia Water Technologies, Nalco Water (Ecolab), Solenis, and ChemTreat are major North American suppliers. U.S. data centre expansion from AI computing and cloud infrastructure sustaining above-historical cooling water treatment procurement.
  • Europe: Germany, France, UK, and the Netherlands anchor European demand from power, chemical, and pharmaceutical cooling water treatment. Veolia, SUEZ Water Technologies, Kurita Water Industries, and BWA Water Additives are major European suppliers. EU phosphorus discharge regulation sustaining phosphate-free treatment programme adoption.
  • Asia-Pacific: China, Japan, India, and South Korea anchor Asia-Pacific demand from power, steel, petrochemical, and data centre cooling water treatment. Kurita Water Industries, ChemTreat Asia, and domestic Chinese suppliers are major producers. Chinese data centre and power generation expansion sustaining above-historical cooling water treatment demand.

Competitive Landscape: Cooling Water Treatment Chemicals Market

Key Players: Nalco Water (Ecolab), Veolia Water Technologies, Solenis, ChemTreat, BWA Water Additives, Kurita Water Industries, SUEZ Water Technologies, Buckman Laboratories, Accepta Water Treatment, USALCO, Chemfeed, BASF (Dispersants), Dow (BIOCIDES), Lonza (Biocides), Kemira

  • Nalco Water (Ecolab) [April 2026] reported commercial growth in its data centre cooling water treatment programme business across North American and European hyperscale and colocation data centre accounts, with Ecolab noting that AI computing facility thermal load growth and hyperscale data centre expansion is sustaining above-historical cooling water treatment service programme procurement from data centre facility management and operations accounts implementing comprehensive corrosion, scale, and Legionella biocide cooling tower treatment programmes as a core component of facility uptime assurance and heat transfer efficiency maintenance requirements.
  • Veolia Water Technologies [January 2026] confirmed commercial expansion of its phosphate-free polymer-based and non-phosphorus cooling water treatment programme portfolio for European power, petrochemical, and industrial facility accounts, with Veolia reporting that EU Water Framework Directive phosphorus discharge regulation and industrial wastewater permit compliance requirements are sustaining above-historical adoption of polymer-based scale inhibitor and organic corrosion inhibitor treatment programme alternatives above conventional orthophosphate and polyphosphate cooling water treatment formulations at compliance-driven European industrial and power generation cooling system accounts.
  • Kurita Water Industries [October 2025]  announced commercial expansion of its non-oxidizing biocide and Legionella control cooling water treatment programme portfolio for Japanese, Korean, and Asian data centre and commercial HVAC cooling tower accounts, with Kurita reporting that Legionella risk management regulatory compliance requirements from Japanese Building Sanitation Management Law and Asian regional Legionella management codes are sustaining above-historical non-oxidizing biocide and integrated Legionella water safety plan programme procurement from cooling tower facility management, property management, and HVAC service contractor accounts implementing risk-based Legionella control programmes.

Consultant POV

The Cooling Water Treatment Chemicals Market path to USD 22.683 billion by 2035 at 6.2% CAGR is anchored in data centre cooling expansion from AI computing, power generation cooling system treatment, phosphate-free sustainable programme adoption, and Legionella biocide management regulation sustaining above-sector market expansion. Ecolab Nalco Water data centre cooling programme expansion, Veolia phosphate-free polymer treatment regulatory compliance, and Kurita non-oxidizing Legionella biocide programme confirm the cooling water treatment chemicals market will sustain above-sector growth through 2035.

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