Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Nitrate and Nitrite

Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Nitrate and Nitrite Nitrate and nitrite are widespread in the environment. They are naturally produced by the oxidation of nitrogen by microorganisms and, to a lesser extent, by lightning. The maximum acceptable concentration (MAC) for nitrate in drinking water is 45 mg/L. This is equivalent to 10 mg/L measured as nitrate-nitrogen. The MAC for nitrite in drinking water is 3 mg/L. This is equivalent to 1 mg/L measured as nitrite-nitrogen. 2021-11-30 Health Canada open-ouvert@tbs-sct.gc.ca Health and SafetyCanadian drinking-water qualitytechnical documentnitratenitrate in drinking-waternitritenitrite in drinking-watermaximum acceptable concentrationhealth risks Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Nitrate and NitriteHTML https://www.canada.ca/en/health-canada/services/publications/healthy-living/guidelines-canadian-drinking-water-quality-guideline-technical-document-nitrate-nitrite.html Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Nitrate and NitriteHTML https://www.canada.ca/fr/sante-canada/services/publications/vie-saine/recommandations-pour-qualite-eau-potable-canada-document-technique-nitrate-et-nitrite.html

Nitrate and nitrite are widespread in the environment. They are naturally produced by the oxidation of nitrogen by microorganisms and, to a lesser extent, by lightning. The maximum acceptable concentration (MAC) for nitrate in drinking water is 45 mg/L. This is equivalent to 10 mg/L measured as nitrate-nitrogen. The MAC for nitrite in drinking water is 3 mg/L. This is equivalent to 1 mg/L measured as nitrite-nitrogen.

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