Parallel decreases in average blood lead levels and the amount of lead used in gasoline during 1976–1980 were observed in the National Health and Nutrition Examination Survey II (NHANES II).
This followed the 1975 ruling of the Environmental Protection Agency to phasedown the use of lead in gasoline in the United States, which was completed in 1991. Also, in 1977 the U.S. Consumer Product Safety Commission (CPSC) ruled that paint intended for residential use could not contain more than 0.06% lead by dry weight. Figure modified with permission from
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