Chromium exists naturally and commonly in two forms: trivalent chromium (Cr (III)) and hexavalent chromium (Cr (VI)). Cr (III) is used as a nutrition supplement since it is necessary to the human diet. On the other hand, Cr (VI) has been a cause of concern because of its level of toxicity.

It is often a byproduct of welding steels that contain chromium. Although Cr (VI) is associated more commonly with industrial processes, it concerns the drinking water supply because it occurs naturally in rock, soil, and groundwater. It can also enter drinking water supplies through leakages from waste sites at old industrial facilities. When a water supply uses disinfection and Cr (III) is present, oxidation occurs by the disinfectant and Cr (III) is converted to Cr (VI).

It has been strongly suggested that Cr (VI) is a carcinogen. It can also cause issues in the respiratory system, kidneys, liver, skin and eyes. The federal maximum contaminant level (MCL) for total chromium is 0.1 ppm. In California, the current MCL for Cr (VI) was established at 0.01 ppm in 2014.

AdEdge offers a range of treatment options for hexavalent chromium removal including ion exchangebiottta® biological filtration, and reverse osmosis.

If your water has high levels of hexavalent chromium, click here to contact us or fill out a site profile form and we’ll start working on a customized solution for you.

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