Chemical services for water treatment

On-site support, result-driven consulting and high-level technical expertise are at the heart of our chemical solutions.
Hydrex expert services


Our unwavering commitment to service is what sets the Hydrex chemical solutions offer apart. From regular on-site support provided by dedicated teams of experts to a comprehensive range of services – site review and audits, lab-testing, training, real-time monitoring, digital supervision, etc. – we ensure that treatment programs are precisely implemented, reaching the requested levels of safety, performance and sustainability.





Hydrex chemical solutions leverage unparalleled expertise and a full range of extended service programs to consistently meet the expectations and water treatment needs of industrial and municipal customers.

On-site service

Dedicated teams for on-site service


Selected among our local teams, a knowledgeable engineer – or a complete team of experts – is assigned for your on-site support and performs all the required actions to ensure the treatment programs are well adapted and continuously improved, and that the operators are fully trained.

These regular visits allow to build a trustful relationship where the field technician becomes your single point of contact and provides access to all of Veolia’s expertise

  • Organizational and technical surveys, diagnostic audits.

  • Multiple controls.

  • Guarantee contracts, service reports, manuals, emergency forms, specific procedures.

  • Business review, analytical programs, action plans, etc.

Reliable analysis and lab-testing

Hydrex chemical services for water treatment rely on a full capacity of routine or tailored analysis, sampling and testing compliant with national and international regulations. We also provide lab solutions such as microscopy and health checks, membrane autopsy, analysis of deposits and pilot testing.

Certified expertise in water treatment chemical supply

Our global network of blending facilities and water treatment chemicals manufacturers ensures the best and speediest delivery of our products to clients worldwide.

A priority focus on risk and compliance

We provide 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.).


Legionella control 

In the context of a cooling treatment, the Hydrex  chemical services offer includes a bespoke legionella control program to keep your facility and processes safe. 

Hydrex service - man helping in a plant

Global water audits

Committed to maximizing chemical, energy and water savings for a sustainable and cost-effective performance, our field service expert teams can perform a 360° assessment of your factory’s water cycle. They will diagnose the risks at technical, operational and managerial levels and propose improvements, including solutions to minimize water consumptions.  

cooling tower chemicals programs

Digital services to optimize performance monitoring

To determine the best chemical product selection and suitable dosage to ensure optimum performance, Hydrex chemical solutions encompass in-house software calculators and simulation tools. We take the operation control of our client’s water assets one step further (cooling systems and boilers in particular) by bundling those tools and our real-time monitoring systems with Veolia’s Hubgrade digital platform. Hubgrade brings digital services and Veolia’s unrivalled water expertise together to deliver operational and environmental efficiency, and maximize the performance of the chemical treatment programs.