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At EWG, our team of scientists, engineers, policy experts, lawyers and computer programmers pores over government data, legal documents, scientific studies and our own laboratory tests to expose threats to your health and the environment, and to find solutions. Our research brings to light unsettling facts that you have a right to know.
California requires reporting of poisoning cases only when blood lead levels are 2.5 times the amount that can damage children's health.

Source: Environmental Working Group, from state health department regulations.