Dionex Corporation Home

Drinking and Bottled Water

Currently, less than 1% of the planet’s water is available for human consumption—making this valuable resource even more important. With surface water contamination and groundwater resources overexploited, the need for effective water analysis and monitoring has never been higher.

Regulatory agencies around the world have developed standards for water analysis and have provided guidance on water disinfection to assure drinking water quality. Dionex provides a variety of solutions for inorganic and organic drinking water contaminants.


The analysis of common anions in environmental water samples is among the most frequently used applications of Dionex ion chromatographs systems.


Dionex has developed several methods for detection of bromate in conjunction with the U.S. EPA office of Ground Water and Drinking Water.


A key Dionex ion-exchange application is the determination of dissolved alkali and alkaline earth metals and ammonia in drinking water.

Haloacetic Acids

Disinfection byproducts, including haloacetic acids (HAA’s), are known carcinogens and have been regulated for many years by the EPA and other regulatory agencies.

Hexavalent Chromium

Hexavalent chromium, Cr(VI), is the most toxic form of chromium found in the environment, requiring regulatory monitoring as a primary drinking water contaminant in the U.S.

Selenium and Arsenic

Arsenic is ubiquitous in the environment in the form of inorganic and organic compounds in the trivalent and pentavalent states. Ion chromatography (IC) can separate these metal species according to their valence states.

Cyanide and Metal Cyanide

Cyanide is a regulated inorganic contaminant in drinking and bottled water in the U.S., as enforced by the U.S. EPA and the U.S. FDA Center for Food Safety and Applied Nutrition (CFSAN). 

Organic Acids

Dionex offers IC and HPLC solutions for separating organic acids.

Emerging Contaminants

Dionex works with drinking water utilities and research organizations to develop robust analytical methods for the detection of emerging contaminants in the environment.