Seven water fixtures at Hillcrest Elementary tested above the legal limit for lead. Oakland Unified School District continues to address lead contamination following a 2017 law requiring lead testing. In recent tests, 6.5% of water sources exceeded the state and federal standard of 15 parts per billion. While 83% of sources were below OUSD's stricter benchmark of 5 ppb, schools like Castlemont High had alarming levels up to 50 ppb. Doctors warn that lead exposure is particularly hazardous for children's health and development.
The EPA standard is that when lead exceeds 15 parts per billion, it requires public notification and treatment. OUSD's benchmark is stricter at 5 parts per billion.
Most patients have no symptoms, and that's the concern. Lead exposure is particularly dangerous for children, causing learning disabilities and developmental delays.
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