Ultrapure water

A full range of water purification technologies
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Veolia Water Technologies offers a full complement of ultrapure water purification technologies and focuses on providing flexible, scalable systems with reduced consumables consumption leading our laboratories and microelectronics clients to lower running costs.


As standard, water contains only H20, as well as a balanced number of H+ and OH- ions. It has a resistivity of 18.2 MΩ.cm, total organic carbon (TOC) under 10 ppb and bacterial count under 10 CFU/ml. To be classified as ultrapure, water must not contain any detectable endotoxins and must be purified to high levels of specification. 

Ultrapure water is used by specialists in the microelectronics industry and clinicians in laboratories including:

  • Researchers
  • Analysts
  • Laboratory technicians and managers
  • Quality managers

Ultrapure water is crucial for successful research and clinical diagnosis as it is an essential and critical reagent used in many  highly sensitive scientific applications  like HPLC, LC-MS, GC-MS, GFAAS, PCR and mammalian cell culture, as well as clinical analyzers.
The presence of impurities and contaminants can have a serious impact on your data. Ensuring the water you use meets a high level of purity eliminates any risk to your data and ensures reliable, accurate results.

Every component in the electronics and photovoltaics manufacturing process must be washed so it’s free of micro-contaminants to ensure good product yield. Ultrapure water is used during many stages of the manufacturing process; our technologies guarantee its quality. 
Ultrapure water quality is a key factor of good wafer yield and minimal wafer defect.

How Veolia is committed to helping you to achieve ultrapure water standards


Our subsidiary Elga LabWater understands how crucial it is for scientists to have access to ultrapure water, or whatever the required water grade they require for their work. When combined, the technologies used in Elga equipment can remove impurities from water down to extremely low levels; some technologies focus on specific contaminants while others have a broader spectrum of targets. 

Laboratory employee wearing protection glasses and holding a vial lab with orange linquid inside.© Médiathèque VEOLIA - Eric Frotier de Bagneux


We empower microelectronics manufacturers to achieve greater product yield and perform beyond sustainability goals with our total water management solutions covering your full water cycle, from consistent ultrapure water quality and wastewater treatment to water reuse and recycling.  

Ultrapure water: the essential reagent

Our range of water purification systems is the widest on the market. 

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Water control

Modular, compact, durable, easy-maintenance solutions which are highly advanced in terms of specific needs.


Reduced operating costs

Adapted to needs and lower consumable costs to respect research departments’ budgets.

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Purity levels adapted to each application

From glassware washing to molecular biology, solutions and combination of technologies to achieve the desired water quality.

Supporting you by improving your ultrapure water system

Unlocking the secrets of the Antarctic with the aid of ultrapure water.

Antarctica is one of the few pristine environments remaining on the planet. Studies in Antarctica and the Southern Ocean are critically important to our understanding of global climate and environmental variability.
The CNR Institute for the Dynamics of Environmental Processes (CNR-IDPA) and the Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari in Venice, Italy, specialize in the analysis of ultra-trace levels of substances in environmental matrices.
All sample bottles used for environmental analysis go through a stringent cleaning protocol over a period of several weeks to ensure that they are contaminant free. The use of ultrapure water is vital for this application and since 2002 the laboratory has been relying on our expertise for their supply. 

Forensic scientists rely on ultrapure water from the Purelab® Quest.

Researchers at the University of Leipzig carry out forensic DNA analyses to provide evidence to support the police and public prosecutors in criminal cases. Thanks to huge advances in genetic technologies and data analysis, scientists can now obtain DNA profiles from even just a few skin cells left behind at a crime scene.
They rely on a consistent supply of high-quality ultrapure water to perform a range of immunological and/or molecular biology techniques. An Elga Purelab® Quest laboratory water purification system, which is attached directly to a sink tap, provides the forensic scientists with a reliable and convenient supply of ultrapure water (18.2 MΩ).

Supporting global leader in System-on-Chip (SOC) and semiconductor solutions to deliver reliable supply of ultrapure water

This project was fast tracked and completed within 4 months from award to water certification. The project scope covers design, build and commissioning of the new plant with a production capacity of 160 m3/hr. 

Discover our technologies for ultrapure water

To achieve the correct water purity for a particular application in a cost-effective manner, we arrange a combination of different technologies and optimize their operation.

Would you like more information about our technologies for ultrapure water treatment?


In clinical pathology many applications depend on reagent-grade water. And although laboratories refer to the CLSI standard for Type 1 water — which is successfully applied in clinical automation — this is insufficient in immunohistochemistry, immunocytochemistry and molecular biology. The problem is the concentration of organic and inorganic residues at sublevels and CLSI Type 1 water does not guarantee sufficient quality. 
Our technologies exceed standards for Type 1 water while providing silica-free Type 1 water, with very low TOC and endotoxin free.


Alexandre Cunha picture

Alexandre Cunha

Microbiologist - Product expert - Sales supervisor
ELGA PureLab
Veolia Water Technologies, Brazil

Contact Alexandre through his LinkedIn account

More services for ultrapure water

Manufacturing and supplying in 60 countries worldwide, our engineers understand scientists' needs from grade routine washing to ultrapure critical use. Our 1st class support provides worldwide installation, validation and support.

A combination of digital tools and Veolia expertise that make all your water processes smarter, safer and more sustainable.
Providing best-in-class water treatment services tailored to your exact needs to optimize the operational performance of your facility.
Providing water hygiene and HYDREXⓇ chemical solutions serving the performance of utility and water treatment equipment.

FAQ about ultrapure water

What is ultrapure water used for?

UPW is used in the semiconductor and pharmaceutical industries the most, though it’s an ideal solution for any work in the lab. Its level of purification makes it versatile for highly sensitive applications.


What applications use ultrapure water (UPW) ?

  • High Performance Liquid Chromatography (HPLC)
  • Liquid Chromatography – Mass Spectrometry (LC-MS)
  • Gas Chromatography – Mass Spectrometry (GC-MS)
  • Graphite Furnace Atomic Absorption Spectroscopy (GFAAS)
  • Polymerase chain reaction (PCR)
  • Immunochemistry (ICC)
  • Mammalian cell culture
  • Clinical analysers
  • Trace Analysis
  • Wafer fabrication

How does ultrapure water help chromatography?

The improved sensitivity of widely used advanced chromatography techniques, such as LC-MS and High-Performance Liquid Chromatography (HPLC), demands water of the highest purity. That’s because a variety of contaminants, including dissolved gasses, particles, colloids, bacteria and organic compounds, can impair data outputs, such as producing higher background values or directly interfering with the analyses. This makes ultrapure water vital to protecting the reliability of your liquid chromatography applications. 

How does ultrapure water help trace analysis?

Trace element analysis involves detecting very low (trace) concentrations of certain chemical elements in a sample. This requires highly sensitive and accurate analytical techniques, with detection resolutions being as low as parts per trillion! 
But the downside of this highly sensitive detection is that the data outputs can be adversely affected by even tiny amounts of contamination by additional elements or ions. This includes causing errors in blanks and calibration samples, or artificially high sample concentrations. As such, the reliability of trace element analysis must be protected using ultrapure water that is virtually free from impurities.

​Ultrapure water dispensed by ELGA’s water purification systems has been shown to be free from trace contaminants to meet the demands of instruments used for trace element analysis. 

Are there any risks with using ultrapure water?

The composition of ultrapure water makes it quite unstable, as water doesn’t like to be in an ultrapure state. When this water comes into contact with impurities and minerals, such as organic and in-organic compounds, it tries to absorb them into its structure. So, you want to be careful with how you store it so there is a minimized risk of contamination and your water stays ultrapure.

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