Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Chlorite and Chlorate (French, HTML)

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Publisher-reported update

2021-11-30

The maximum acceptable concentration (MAC) for chlorite in drinking water is 1 mg/L. The MAC for chlorate in drinking water is 1 mg/L. A guideline for chlorine dioxide is not required because of its rapid reduction to chlorite in drinking water. Utilities should make every effort to meet the guidelines, however, any method of control employed must not compromise the effectiveness of water disinfection.

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