Dechlorination Chemical Market Manufacturers & Suppliers Company Analysis 2026-2035

Dechlorination Chemical Market Size and Growth 2025 to 2034

The global dechlorination chemical market size was estimated at USD 13.19 billion in 2025 and is expected to increase from USD 13.65 billion in 2026 to USD 18.55 billion by 2035, growing at a CAGR of 3.47% from 2026 to 2035. Asia Pacific dominated the dechlorination chemical market with the largest volume share of 45.11% in 2025.The growing demand for clean & safe water, rising awareness about water treatment solutions, and the rising demand from industries like chemical, pharmaceutical, food & beverage, and metal manufacturing drive the growth of the market.

Dechlorination Chemical Market Key Takeaways

• The Asia Pacific dominated the global dechlorination chemical market with the largest volume share of 45.11% in 2025.
• By region, North America is expected to grow at a significant rate in the market during the forecast period due to a well-established chemical manufacturing industry.
• By application, the water treatment segment dominated the dechlorination chemical market in 2025 due to rising demand from the municipal water treatment, oil & gas, food & beverage, and power generation industries.
• By application, the industrial processes segment is expected to grow at a significant rate in the market during the forecast period due to stringent environmental regulations to avoid water pollution.
• By chemical type, the sodium thiosulfate segment dominated the dechlorination chemical market in 2025 due to its cost-effectiveness and rapid reaction with chlorine.
• By chemical type, the sodium bisulfide segment is expected to grow at the fastest rate in the market during the forecast period due to its harmless nature and rising demand for clean water.
• By form, the liquid segment dominated the dechlorination chemical market with the largest share in 2025 due to rising demand from the water treatment and food processing industries.
• By form, the powder segment is observed to grow at the fastest rate in the market during the forecast period due to its longer shelf life.
• By end use, the municipal sector held the dominating share in the dechlorination chemical market in 2025 due to rapid urbanization and growing population.
• By end use, the industrial sector is expected to grow at a significant rate in the market during the forecast period due to stringent government regulations and rapid industrialization.

Dechlorination Chemical Market Overview

The process of removing or lowering chlorine levels from water is known as dechlorination. Chlorine is used in water treatment to kill harmful microorganisms. This process is widely used in applications like wastewater treatment, industrial processes, and aquatic habitats. Chemical dechlorination is the process in which chemicals are added to achieve dechlorination of water.

This process includes the use of chemicals to react or neutralize chlorine, and chemicals used in this process are sodium bisulfite, sodium metabisulfite, sodium thiosulfate, and sulphur dioxide. In the chemical dechlorination process, a specific amount of chosen chemicals is added to chlorinated water, and that chemical reacts with chlorine, then it kills harmful organism.

• The growing awareness of chlorine-free water and the rising scarcity of fresh water promote the growth of the market.
• The rapid growth in population and ongoing urbanization in the world increases the demand for clean and safe water.
• The government's strong investment in water infrastructure development projects to enhance the quality of water increases the demand for dechlorination chemical market. 

The Growing Population Is Transforming the Dechlorination Chemical Market

The rapid growth in the population leads to higher demand for safe drinking water. Increased population demand for clean water and strong wastewater management systems, which increases demand for dechlorination chemicals to maintain the quality of drinking water. Growth in population increases the volume of water consumption and wastewater generation, which increases demand for wastewater treatment infrastructure.

Governments strongly invest in water treatment facilities to fulfill the growing demand. The rising awareness among consumers regarding water-related diseases increases the demand for safe drinking water. The rapid population growth and rising water scarcity problems increase the demand for a strong water management system.

The growing population increases food production, which increases water usage in the agriculture sector that fuels demand for water treatment. Factors like disposable income rise, increased food production need, and rising demand for safe & clean drinking water are key drivers for the market growth.

Recent Trends in the Dechlorination Chemical Market

• Rising Demand From Municipal Water and Wastewater Treatment: Increasing investments in drinking water purification and wastewater reuse are driving higher consumption of dechlorination chemicals to neutralize residual chlorine and chloramines before discharge into natural water bodies.
• Stricter Environmental Discharge Regulations: Tightening regulations on chlorine residuals in effluents are accelerating adoption of sulfur-based dechlorination agents, sodium bisulfite, and sodium metabisulfite to protect aquatic ecosystems and comply with regulatory limits.
• Growth in Industrial Water Treatment Applications: Expanding industrial activities in power generation, oil and gas, chemicals, and manufacturing are increasing the use of dechlorination chemicals to prevent corrosion, protect membranes, and ensure process water quality.
• Expansion of Aquaculture and Fisheries: Rising awareness of chlorine toxicity to aquatic life is boosting demand for dechlorination chemicals in aquaculture farms, hatcheries, and fisheries to maintain safe water conditions and improve survival rates.
• Shift Toward Safer and More Efficient Chemical Formulations: Manufacturers are developing high-purity, fast-reacting, and low-residue dechlorination chemicals that improve operational safety, dosing accuracy, and cost efficiency across municipal and industrial treatment systems.

Dechlorination Chemical Market Report Scope

Value Chain Analysis

• Raw Material Procurement: This involves sourcing and acquiring fundamental chemical inputs, primarily sulfur, for producing common dechlorination agents.
  
  • Key Players: BASF SE, Solvay SA, and Olin Corporation.
• Manufacturing and Formulation: In this, raw materials undergo chemical synthesis and processing to produce market-ready dechlorination chemicals in various forms.
  
  • Key Players: Ecolab, DuPont de Nemours, Huntsman Corporation, and Kemira Oyj.
• Packaging and Customization: In this, products are packaged in appropriate containers and may be customized or blended to meet specific industrial or municipal application needs and performance requirements.
  
  • Key Players: Hydrite Chemical and Carbotecnia.
• Distribution and Logistics: This involves efficiently transporting the finished chemicals from manufacturing sites to diverse end-users, including water treatment plants, industrial facilities, and retailers.
  
  • Key Players: Chemtrade Logistics, Lenntech B.V., DHL Group, and FedEx Logistics.
• Application & End-Use: In this, chemicals are applied in various sectors to neutralize residual chlorine and meet safety or environmental standards.
  
  • Key Players: Tetra Tech and Aqua Chem.

Market Drivers

The dechlorination chemical market is primarily driven by tightening environmental discharge regulations that limit residual chlorine and chloramines in treated effluents released into rivers, lakes, and coastal waters. Municipal water and wastewater treatment plants are increasingly required to neutralize chlorine before discharge to protect aquatic ecosystems and comply with regulatory thresholds. Growth in industrial water treatment, particularly in power generation, oil and gas, chemicals, and desalination plants, is further strengthening demand, as chlorine removal is critical to prevent corrosion, membrane damage, and process disruption. Expansion of aquaculture and fisheries is also contributing, as even low chlorine concentrations are toxic to fish and aquatic organisms, necessitating reliable dechlorination solutions.

Market Restraints

The market faces restraints related to the handling, storage, and transportation risks associated with commonly used sulfur-based dechlorination chemicals such as sodium bisulfite and sulfur dioxide. These chemicals require strict safety protocols, trained personnel, and specialized dosing systems, which increase operational complexity and costs for smaller treatment facilities. In addition, fluctuating prices of raw materials derived from sulfur and chemical intermediates can affect procurement stability and long-term budgeting. Limited awareness and technical expertise in developing regions also slow adoption, particularly in decentralized or rural water treatment systems.

Market Opportunities

Significant opportunities are emerging from increasing investments in wastewater reuse, water recycling, and zero-liquid-discharge systems across water-stressed regions. As reuse standards become stricter, precise chlorine neutralization is becoming a mandatory process step, expanding demand for high-efficiency dechlorination chemicals. Growth of industrial membrane-based treatment systems, including reverse osmosis and ultrafiltration, is creating opportunities for advanced, low-residue dechlorination formulations that protect sensitive membranes. Additionally, rising adoption of aquaculture, hatcheries, and ornamental fisheries presents long-term growth potential for safer, fast-acting dechlorination agents tailored for biological systems.

Market Challenges

One of the key challenges in the dechlorination chemical market is achieving accurate dosing under variable flow and chlorine load conditions, as under-dosing risks environmental non-compliance while over-dosing increases chemical costs and introduces secondary contaminants. Integration of dechlorination processes into aging water infrastructure can be technically challenging and capital intensive. Disposal and management of by-products formed during dechlorination reactions also require careful control to avoid downstream impacts. Furthermore, increasing scrutiny on chemical usage in water treatment is pushing suppliers to balance performance, safety, and environmental compatibility, which raises R&D and compliance costs.

Segmental Insights

By Application

The water treatment segment dominated the dechlorination chemical market in 2025. The rising demand from various industries like municipal water treatment plants, power plants, oil & gas, food & beverage, and power generation drives the growth of the market. Rapid urbanization, industrialization, and increased water consumption promote the growth of the market. The rising industrialization requires large volumes of safe water to ensure product quality and maintain operational efficiency.

The rising reuse and recycling of water increases the demand for dechlorination chemicals. Furthermore, rapid investment in water treatment projects & the renewal of existing facilities, and advanced technological development in the dechlorination process drive the growth of the market.

The industrial segment is the fastest growing in the market during the forecast period. The expansion of industrial activities, including manufacturing, pharmaceuticals, and food and beverage, requires larger amounts of water, which fuels the market growth. Stringent government regulations to avoid water pollution and growing water scarcity problems promote market growth.

Additionally, the growing adoption of sustainable practices and rapid economic growth in developed countries drive the market growth. The rising industries focus on improving water quality, including cooling water, process water, and portable water, which fuels the market growth. 

By Chemical Type

The sodium thiosulfate segment held the dominating share of the dechlorination market in 2025. The rapid reaction with chlorine and chloramines to remove chlorine residuals effectively from water drives the growth of the market. The non-toxic nature and cheap price compared to other dechlorination methods and agent promotes the market growth. Furthermore, the wide applications include water treatment, aquarium maintenance, photography, and textiles, which drive market growth.

The sodium bisulfide segment is the fastest-growing in the market during the forecast period. The stringent environmental regulations about water quality and rising demand from industries drive the market growth. The rising requirement of clean drinking water increases the demand for sodium bisulfide. It works as a reducing agent and is harmless, which prevents toxic effects on aquatic life. Furthermore, sodium bisulfide is a cost-effective method, and it gives protection against oxidation, which supports market growth.

By Form

The liquid segment held the largest share of the dechlorination chemical market in 2025. The strong demand from the water treatment and food processing industries drives the market growth. The ease of handling and easy adaptability increases the demand for liquid dechlorination chemicals. The liquid form is easily mixed, stored, and transported, which helps in market growth. The growing demand from various industries like agriculture, textile, chemical processing, pharmaceutical, and healthcare drives the market growth. 

The powder segment is expected to grow at the fastest rate in the market during the forecast period. It rapidly dissolves in water and is widely used to disinfect large volumes of water at lower concentrations, which supports the market growth. The rising demand for municipal water treatment, swimming pools, and industrial water systems drives the market growth. Furthermore, the longer shelf life of powder agents and technological advancements fuel the market growth.

By End Use

The municipal water segment dominated the dechlorination chemical market in 2025. The growing need to prevent adverse effects on aquatic life and industrial processes drives the market growth. The rising demand to kill bacteria, viruses, and pathogens from waters to ensure safe drinking water helps in market growth.

The stringent government regulations concerning water quality and disinfection byproducts increase the demand for dechlorination chemicals. Furthermore, rapid urbanization and a growing population increase water consumption and wastewater generation, which drives market growth. The rising public health concerns and technological advancements in water treatment technologies support the market growth.

The industrial segment is the fastest growing in the market during the forecast period. The rising demand for safe & treated water from various industrial sectors like manufacturing, power plants, food & beverages, and pharmaceuticals drives the market growth. The growing environmental concerns and stringent environmental regulations help in the market growth.

The rapid industrialization increases the generation of wastewater, which increases the demand for dechlorination chemicals. Additionally, rapid economic expansion and the development of infrastructure projects, such as the construction of new industrial facilities and many more, drive the growth of the market.

Regional Insights

The Asia Pacific dechlorination chemical market size was valued at USD 5.95 billion in 2025 and is expected to be worth around USD 8.37 billion by 2035, exhibiting at a compound annual growth rate (CAGR) of 3.49% over the forecast period from 2026 to 2035.

Asia Pacific dominated the market share 45.11% in 2025. The growing industrialization and rapid growth of infrastructure development projects increase the demand for water treatment, which helps in the growth of the market. The rising population and rapid urbanization increase the demand for dechlorination chemicals. The well-established manufacturing hub includes chemicals, steel, pharmaceuticals, and consumer goods, which increase the demand for dechlorination chemicals. Furthermore, growing environmental awareness and emerging economies in the region drive the growth of the market.

China is observed to be the largest contributor in the dechlorination chemical market. The well-developed chemical production industry and rapid industrial growth drive the growth of the market. The strong investment in the chemical industry and rising innovations in the country promote the growth of the market. Additionally, the growing water scarcity problems and stringent environmental regulations regarding water quality drive the market growth.

Rapid growth of dechlorination in North America

North America expects substantial growth in the market during the predicted period. The well-established industrial infrastructure and robust chemical manufacturing industry in the region drive the growth of the market. The rising demand for water treatment to remove chlorine residual from water helps in market growth.

Stringent environmental regulations on chlorine emission and wastewater management and government focus on sustainability and pollution control promote the growth of the market in the region. Furthermore, the presence of advanced water treatment infrastructure in the region drives the growth of the market.

Rapid growth of dechlorination in U.S.

The United States holds the largest share of the dechlorination chemical market in the North America region. The well-established chemical industry, including manufacturing and production, increases the demand for dechlorination chemicals. The growing demand from various industries like chemical, water treatment, and wastewater management drives the growth of the market. Additionally, stringent environmental regulations for clean air & water and pollution control promote the market growth.

Why did Europe consider a Notable Region in the Dechlorination Chemical Market?

Europe is regarded as a notably growing region, primarily due to strict environmental regulations, a strong focus on sustainability and green chemistry, and substantial investments in advanced water treatment infrastructure. The European Union enforces rigorous environmental standards and water quality directives that require the removal of residual chlorine from treated water before it is discharged into natural water bodies to protect aquatic life and ecosystems through effective dechlorination methods.
 
Germany Dechlorination Chemical Market Trends

Germany stands out as a leading innovator in this region, being a highly regulated market that complies with demanding EU regulations such as the EU REACH regulation and the European Green Deal. These regulations promote environmentally friendly, low-toxicity chemical solutions and advanced water treatment technologies. German chemical companies, such as BASF, invest heavily in research and development to enhance the environmental impact and performance of their products.
 
Emergence of Latin America in the Dechlorination Chemical Market

Latin America is also a rapidly growing region in the global market, driven by urbanization, increasing industrialization, and the introduction of strict government regulations concerning water treatment. Countries like Brazil, Mexico, and Chile are enforcing more rigorous environmental and public health standards to address water pollution. Significant investments are being made in water and wastewater treatment infrastructure to enhance service coverage and improve water quality in alignment with sustainability goals.
 
Brazil Dechlorination Chemical Market Trends

Brazil is a significant and expanding market within Latin America, primarily due to its national initiative to ensure universal access to treated water and sanitation. While Brazil has a domestic chlor-alkali industry, it also relies on imports to fulfill certain specialized chemical needs. The logistics of chlorine transport provide some protection for the local market against intense international competition, boosting the consumption of water treatment chemicals.
 
How will the Middle East and Africa contribute to the Dechlorination Chemical Market?

The Middle East and Africa are key contributing regions to the global market, largely due to rapid population growth and increasing industrial activities in major cities like Riyadh, Dubai, Cairo, and Lagos. These cities generate substantial wastewater that requires effective treatment before discharge or reuse. Additionally, large-scale infrastructure projects, particularly in desalination, are being undertaken. The MEA region, especially the Gulf states, faces severe water scarcity, making desalination and wastewater reuse essential for ensuring the safety and quality of both potable water and treated wastewater.
 
UAE Dechlorination Chemical Market Trends
 
The UAE is a major market within this region, primarily due to its extreme water scarcity. It is a significant consumer in the desalination and water reuse sectors. Government initiatives, such as the Water Security Strategy 2036, mandate high standards for water reuse and quality, leveraging advanced infrastructure and trade policies. The UAE mainly imports water treatment polymers and other specialty chemicals due to limited local manufacturing capabilities for certain products.

Recent Developments:

• In June 2025, researchers at the Ho Chi Minh City University of Natural Resources and Environment designed a response surface methodology based on a face-centered central composite to optimize the dechlorination process. (Source: www.sciencedirect.com)
• In January 2025, scientists at the Wuhan University of Technology developed a new method of dechlorination pretreatment using GP-torrefaction. The dechlorination effect and mechanism of three typical chlorinated wastes (PVC, Neoprene Rubber and Corn Straw) were investigated.(Source: www.sciencedirect.com)

Dechlorination Chemical Market Top Companies List

• BASF SE
• Solvay
• Albemarle Corporation
• Dow Chemical
• Merck Group
• Huntsman Corporation
• Olin Corporation
• Aqua Chem
• Tetra Tech
• Severstal
• Clariant
• Evonic Industries
• Arkema Group
• Thermo Fisher Scientific
• Evonik Industries
• Ecolab
• BWA Water Additives
• Acuro Organics Limited

Segments Covered in the Report

By Application 

• Water Treatment
• Industrial Processes
• Pulp And Paper

By Chemical Type 

• Sodium Thiosulfate
• Sodium Bisulfite
• Calcium Thiosulfate
• Hydrosulfite

By Form 

• Liquid
• Powder
• Granular

By End Use 

• Municipal
• Industrial
• Agricultural

By Regional 

• North America
• Asia Pacific
• Europe
• Latin America
• Middle East & Africa