human
I've heard a lot about the dangers of lead in drinking water. Is this true?
assistant
Yes, it is. Lead is a toxic metal that can cause serious health problems if ingested in large amounts. It's been linked to learning and behavioral issues in children, as well as kidney and liver damage. In adults, high levels of lead exposure have been associated with increased risk of heart disease, stroke, and hypertension. The EPA has set a limit of 15 parts per billion (ppb) for lead in drinking water.