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Global Water Treatment Chemicals Market Trends and Insights

Tightening Discharge Norms for Heavy Metals and Nutrients

In 2024, the U.S. Environmental Protection Agency (EPA) revised effluent ceilings, and in 2025, China's Ministry of Ecology and Environment followed suit^{.[1]U.S. Environmental Protection Agency, 鈥淪team Electric Power Generating Effluent Guidelines,鈥� epa.gov} These changes forced operators to switch from the conventional ferric chloride to the more specialized polyaluminum chloride. This transition allowed them to meet the stringent residual metal targets set below the required levels. Concurrently, the European Union's 2025 Urban Wastewater Treatment Directive capped total phosphorus in sensitive catchments. As a result, demand surged for ferric sulfate-polymer blends, which effectively minimized the need for alkali additions.

Industrial Zero-Liquid-Discharge Mandates in Power and Mining

In 2026, China's National Development and Reform Commission mandated coal-chemical plants to implement Zero Liquid Discharge (ZLD) rules. This directive curtailed the daily chemical consumption for a standard 600 MW unit, covering antiscalants, biocides, and dispersants. Similarly, in 2024, India's Central Pollution Control Board enforced similar mandates on thermal power stations located across 13 river basins. This resulted in an increased demand for oxygen scavengers and sludge-conditioning polymers during the forecast period of 2026鈥�2031.

PFAS-Specific Remediation Regulations Boosting Demand for GAC and IX Resins

Utilities serving over 10,000 residents must adopt either granular activated carbon or strong-base anion exchange beds to comply with the U.S. EPA's stringent limits on PFOA and PFOS, set at a parts-per-trillion level, during the forecast period of 2026鈥�2031. While coconut-shell-based carbons excel in adsorbing long-chain PFAS, ion-exchange resins effectively capture the elusive short-chain variants that often evade carbon filters.

Ultra-Pure Water Demand from Green-Hydrogen Electrolyzers

Proton-exchange-membrane systems require the feedwater conductivity to remain below 0.1 碌S/cm for optimal operation. Each year, a standard electrolyzer consumes significant amounts of this specialized water, utilizing ion-exchange resin for every liter throughout its operational lifespan. Looking ahead, Saudi Arabia's NEOM project is expected to require substantial quantities annually, aligning with its capacity activation during the forecast period of 2026鈥�2031.

Volatile Raw-Material Prices for Specialty Polymers and Biocides

From early 2024 to mid-2025, production curtailments driven by gas shortages in China's Shandong province caused notable swings in acrylamide monomer prices. These price changes subsequently pushed up the costs of delivered flocculants. In Europe, a fire incident that significantly reduced isothiazolinone capacity led to rising biocide premiums, particularly impacting buyers without long-term contracts.

Electro-Oxidation Micro-Reactors Lowering Coagulant Use

In 2025, a textile wastewater plant in India made a pivotal shift by adopting an electro-oxidation reactor, moving away from traditional ferric chloride and polyacrylamide. This transition not only led to a significant reduction in chemical costs but also substantially decreased annual sludge production. Furthermore, the plant's energy consumption - between 2 kWh/m鲁 and 4 kWh/m鲁 - remains competitive, particularly in regions where power costs are below a specific threshold^{[2]International Water Association, 鈥淓lectro-Oxidation Energy Benchmarks,鈥� iwa-network.org}.

Segment Analysis

By Product Type: Coagulants Lead as PFAS Remediation and Municipal Expansion Drive Polyaluminum Chloride Adoption

Coagulants and flocculants dominated the water treatment chemicals market, capturing 37.89% of the revenue in 2025, with a projected growth rate of 5.89% during the forecast period of 2026鈥�2031. In the Asia-Pacific region, polyaluminum chloride is replacing alum due to its ability to produce significantly less sludge over a wider pH range, which reduces lime consumption in plants. Biocides, traditionally used in standard facilities with substantial daily capacities, are now being increasingly adopted in data-center cooling loops. Following the European Union's 2025 classification of certain phosphonates as persistent and mobile, scale inhibitors are under heightened scrutiny.

Note: Segment shares of all individual segments available upon report purchase

By End-User Industry: Semiconductors Surge While Municipal Utilities Anchor Baseline Demand

In 2025, municipal utilities, bolstered by India's Jal Jeevan Mission, accounted for 35.78% of total spending, utilizing significant quantities of water treatment chemicals that year. The semiconductor sector, fueled by Intel's Ohio fabrication plant and Samsung's facility in Texas, has been experiencing a 6.84% CAGR in the forecast period (2026-2031), as both ramp up their ultra-pure water systems, necessitating ongoing mixed-bed resin regeneration.

By Application: Ultra-Pure Water Treatment Outpaces Cooling as Green Hydrogen and Semiconductors Converge

By 2031, green hydrogen and semiconductor projects are set to drive additional demand, pushing ultra-pure water applications to grow at a rate of 7.33% CAGR. While cooling water accounted for 30.12% of revenues in 2025, retrofitting to dry-cooling not only reduces makeup water by half but also slashes chemical consumption significantly.

Note: Segment shares of all individual segments available upon report purchase

By Treatment Stage: Primary Coagulation-Flocculation Dominates While Sludge Conditioning Gains from Dewatering Mandates

In the water treatment chemicals market, primary treatment accounted for 32.22% of the 2025 revenue, with coagulant doses varying depending on turbidity. Sludge conditioning increased by 6.15% CAGR in the forecast period (2026-2031), driven by dewatering regulations in Germany and the Netherlands mandating cake moisture levels below a specific threshold, leading to an emphasis on polymer optimization.

Note: Segment shares of all individual segments available upon report purchase

Geography Analysis

In 2025, the Asia-Pacific region accounted for 47.71% of the revenue and is projected to grow at a rate of 6.92% in the forecast period of 2026-2031. This growth is largely driven by China's Zero Liquid Discharge (ZLD) retrofits and India's Amrut 2.0 sewage initiative, which alone requires significant quantities of chemicals. North America, capturing a notable portion of 2025's sales, sees its market buoyed by new PFAS regulations and chip fabrication initiatives, bolstered by the CHIPS Act. Europe, holding a considerable share, is swayed by nutrient removal targets, particularly the push to reduce phosphorus levels to 0.5 mg/L in sensitive areas. The Middle East and Africa, together contributing a significant portion, are driven by Saudi Arabia's ambitious plan to achieve a large-scale desalination capacity by 2030. South America is reaping the benefits of Brazil's sanitation mandate, which aims for nearly universal potable water coverage by 2033.