![]() ![]() ![]() 5 – 7 Nevertheless, lead in drinking water continues to be a public health concern. In the past 2 decades, legislation and regulations at the federal level have helped to reduce water lead concentrations. Water consumption is estimated to contribute, on average, about 10% to 20% of a child’s total lead intake, and for infants fed formula, 40% to 60% of their lead exposure. 2, 3Īlthough lead-based paint is the single most important contributor to elevated blood lead levels in children, if just a few micrograms of lead per deciliter of blood are of concern and if we are to truly prevent the health effects of lead exposure in the United States, then water, as well as other sources of lead, must also be addressed. 1 Research conducted in the past few years, however, suggests that there are health effects below that level, and that IQ declines at a faster rate below 10 μg/dL than above. That concentration has been reduced from 60 μg/dL to the current level of 10 μg/dL, which was established in 1991. SINCE THE CENTERS FOR Disease Control and Prevention began to establish acceptable blood lead levels for young children in the 1960s, the concentration at which blood lead levels have been thought to have significant health effects has steadily declined.
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