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How Much Nitrate/Nitrite is allowed in drinking water?

April 26, 2017allowed drinking water nitrate nitrite

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How Much Nitrate/Nitrite is allowed in drinking water?

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The maximum contaminant level (MCL) for nitrate in drinking water is 10 mg/L. The MCL for Nitrite is 1 mg/L. These are the maximum allowable level of nitrate/nitrite that may be present in drinking water without a high risk of causing health problems. The action level for nitrate is >50% the MCL or 5mg/L. This requires increased monitoring of a system to determine the potential health risk.