| Popis: |
SUMMARY Nitrates in water supplies in concentrations over 45 mg/1 (as NO3) have led to numerous cases of infant methomoglobinemia, particularly in infants up to six months of age, whose main liquid intake is powdered milk formula made up with tap water containing high concentrations of nitrates. Other possible negative health effects associated with the ingestion of nitrates in water for extended periods have been detected in animal studies including changes in heart blood vessels, and behavioral effects. The possible association of nitrates in water with the formation of the potent carcinogens nitrosamines, is still to be determined. However, sufficient evidence is presently available to support the strict adherence to current nitrate drinking water stanard of 45 ppm. |
