**Hydrex® is the Veolia range of chemicals specifically developed to optimize the performance of your utility’s systems and water assets. Our chemical solutions allow for production continuity, compliance and cost effectiveness. Strictly tested and selected by our team of experts to suit your operating conditions, Hydrex chemical products are approved by the recognized industrial and governmental entities worldwide.** [CONTACT US TO FIND OUT HOW WE CAN HELP](https://www.veoliawatertechnologies.com/en/contact-web2lead) **Hydrex features over 3,000 formulations** including both organic and inorganic chemicals designed to protect water treatment systems against scale deposition, corrosion, fouling and biological problems. All of these formulations meet the most stringent **requirements of industrial and municipal clients all around the world.**  ## A brand you can trust **Choosing the Hydrex brand means:**  A guarantee of quality backed by full-capacity lab-testing compliant with national and international regulations: checking of raw materials, purity analysis, strict quality control, storage of samples for all production batches, etc.  A certified expertise in the supply of chemicals for water treatment through a global network of blending facilities and partners, ensuring a fast delivery worldwide.  A priority focus on risk and compliance: safety data sheets, market approvals and compliance statements to all existing and upcoming regulations (e.g. REACH, Biocidal Products Regulation (BPR), Global Harmonized System (GHS), etc.).  A focus on research and development to formulate non-hazardous, more environmentally friendly products. In addition to chemical products, we combine the expertise of technical teams, onsite services and a full line of automated systems and digital tools to efficiently feed the selected chemicals and **monitor their performance**. [LEARN MORE ABOUT OUR WATER TREATMENT CHEMICAL PROGRAMS](/en/services/water-treatment-chemical-programs)  ## ## A comprehensive range of products to suit all water treatment needs [  ](/en/chemicals-boiler-water-treatment)[Boiler water treatment (Hydrex 1000 Series)](/en/chemicals-boiler-water-treatment) ### [Boiler water treatment (Hydrex 1000 Series)](/en/chemicals-boiler-water-treatment) [  ](/en/services/chemicals-cooling-water-treatment)[Cooling tower water treatment (Hydrex 2000 Series)](/en/services/chemicals-cooling-water-treatment) ### [Cooling tower water treatment (Hydrex 2000 Series)](/en/services/chemicals-cooling-water-treatment) [  ](/en/chemicals-drinking-water-treatment)[Drinking water production (Hydrex 3000 Series) ](/en/chemicals-drinking-water-treatment) ### [Drinking water production (Hydrex 3000 Series) ](/en/chemicals-drinking-water-treatment) [  ](/en/chemicals-membrane-treatment)[Membrane treatment / desalination (Hydrex 4000 Series) ](/en/chemicals-membrane-treatment) ### [Membrane treatment / desalination (Hydrex 4000 Series) ](/en/chemicals-membrane-treatment) [  ](/en/chemicals-systems-maintenance-and-cleaning)[Maintenance and cleaning chemicals (Hydrex 5000 Series)](/en/chemicals-systems-maintenance-and-cleaning) ### [Maintenance and cleaning chemicals (Hydrex 5000 Series)](/en/chemicals-systems-maintenance-and-cleaning) [  ](/en/wastewater-treatment-chemicals)[Effluent and sludge treatment.(Hydrex 6000 Series)](/en/wastewater-treatment-chemicals) ### [Effluent and sludge treatment.(Hydrex 6000 Series)](/en/wastewater-treatment-chemicals) [  ](/en/biocide-chemicals)[Biocidal water treatment (Hydrex 7000 Series)](/en/biocide-chemicals) ### [Biocidal water treatment (Hydrex 7000 Series)](/en/biocide-chemicals) [  ](/en/chemical-treatment-industrial-processes)[Industrial processing applications (Hydrex 8000 Series)](/en/chemical-treatment-industrial-processes) ### [Industrial processing applications (Hydrex 8000 Series)](/en/chemical-treatment-industrial-processes) [  ](/en/chemicals-specific-conditioning-treatment)[Specific chemical treatment applications (Hydrex 9000 Series)](/en/chemicals-specific-conditioning-treatment) ### [Specific chemical treatment applications (Hydrex 9000 Series)](/en/chemicals-specific-conditioning-treatment) [  ](/en/vegetal-based-coagulants-wastewater-treatment)[Plant-based Coagulants](/en/vegetal-based-coagulants-wastewater-treatment) ### [Plant-based Coagulants](/en/vegetal-based-coagulants-wastewater-treatment) ## Comprehensive chemical conditioning programs dedicated to most water applications [  ](https://www.veoliawatertechnologies.be/#)[Condensate recovery](https://www.veoliawatertechnologies.be/#) ### [Condensate recovery](https://www.veoliawatertechnologies.be/#) [  ](/en/applications/veolia-water-technologies-supplies-world-drinking-water)[Drinking water](/en/applications/veolia-water-technologies-supplies-world-drinking-water) ### [Drinking water](/en/applications/veolia-water-technologies-supplies-world-drinking-water) [  ](/en/applications/groundwater-treatment)[Groundwater treatment](/en/applications/groundwater-treatment) ### [Groundwater treatment](/en/applications/groundwater-treatment)  Odour management ### Odour management  Pretreatment ### Pretreatment [  ](/en/applications/process-water)[Process water](/en/applications/process-water) ### [Process water](/en/applications/process-water) [  ](/en/applications/produced-water-treatment)[Produced water](/en/applications/produced-water-treatment) ### [Produced water](/en/applications/produced-water-treatment) [  ](/en/applications/seawater-desalination)[Seawater desalination](/en/applications/seawater-desalination) ### [Seawater desalination](/en/applications/seawater-desalination) [  ](/en/applications/sludge-treatment)[Sludge treatment](/en/applications/sludge-treatment) ### [Sludge treatment](/en/applications/sludge-treatment) [  ](http://watertechrcp.veolia.acsitefactory.com/uuid#f540473d-74de-49ba-9a1a-c09a0457cc54)[Stormwater management](http://watertechrcp.veolia.acsitefactory.com/uuid#f540473d-74de-49ba-9a1a-c09a0457cc54) ### [Stormwater management](http://watertechrcp.veolia.acsitefactory.com/uuid#f540473d-74de-49ba-9a1a-c09a0457cc54) [  ](http://watertechrcp.veolia.acsitefactory.com/uuid#eb181b41-639f-48d6-97fc-8e42ddf49425)[Utility feed water](http://watertechrcp.veolia.acsitefactory.com/uuid#eb181b41-639f-48d6-97fc-8e42ddf49425) ### [Utility feed water](http://watertechrcp.veolia.acsitefactory.com/uuid#eb181b41-639f-48d6-97fc-8e42ddf49425)  Waste-to-energy water treatment ### Waste-to-energy water treatment [  ](/en/applications/reuse)[Wastewater recovery and reuse](/en/applications/reuse) ### [Wastewater recovery and reuse](/en/applications/reuse) [  ](https://www.veoliawatertechnologies.com/en/applications/wastewater)[Wastewater and sewage treatment](https://www.veoliawatertechnologies.com/en/applications/wastewater) ### [Wastewater and sewage treatment](https://www.veoliawatertechnologies.com/en/applications/wastewater)