"There is no safe amount of lead in drinking water, according to Asa Bradman, a professor of public health. While federal law allows 15 ppb, Oakland Unified has set its limit at 5 ppb to protect students better."
"Exposure to lead can cause damage to the brain and slow development in children...even low levels of lead in blood have been shown to negatively impact children’s health, including IQ and attention span."
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