Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Chromium

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Organization: Health Canada

Type: Guidelines

Date published: 1979-01

Table of Contents

A maximum acceptable concentration of 0.05 mg/L (50 µg/L) for chromium in drinking water has been established on the basis of health considerations. Trivalent chromium, the most common naturally occurring state of chromium, is not considered to be toxic; however, if present in raw water, it may be oxidized to hexavalent chromium during chlorination. Toxic effects of chromium in man are attributed primarily to this hexavalent form. At the maximum acceptable concentration in drinking water, ingestion of hexavalent chromium has not resulted in any known harmful effects on the health of man or animals.

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