Nitrate and Nitrite in Drinking Water (1995) / Chapter Skim
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1 INTRODUCTION AND BACKGROUND
1 INTRODUCTION AND BACKGROUND
Pages 9-12
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From page 9... ...
MCkGs are to be concentrations at which no known or expected adverse health effects occur and are to allow an adequate margin of safety. The Safe Drinking Water Act also requires EPA to review its existing stanciarcis periodically and incorporate new data if they are available.
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From page 10... ...
The nitrogen oxides have multiple interconvertible forms, although the deleterious effects of concern arise through a common intermediate. Each of the precursors of that intermediate has a different molecular weight; using a weight measure, such as milligrams, to evaluate usefully the relative contra button of nitrite versus nitrate, for example, requires a conversion factor.
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From page 11... ...
The National Research Council report The Health Ejects of Nitrate, Nitrite, and NNitroso Compounds (NRC 1981) estimated that a typical daily intake of nitrate by an adult in the United States is about 75 ma.
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From page 12... ...
The human exposure to nitrate and nitrite and the relative contribution of drinIcing water to that exposure are assessed. Finally, the MCkGs that provide adequate margins of safety for human health are identified.
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