Which statement about lead is not true?

• A. Lead in water is never a concern
• B. Lead is a heavy metal that can cause health problems
• C. Lead exposure occurs through old paint and contaminated soil
• D. Lead poisoning can affect cognitive development

Answer: (A)

Lead exposure can come from more than one source, and water is a real pathway to consider. Lead can leach into drinking water from old or corroded pipes, solder, and fixtures, especially in older homes. Children are particularly vulnerable because they absorb a higher proportion of lead and it can affect brain development even at low levels. There isn’t a safe blood lead level, so any exposure through water adds to the risk of neurodevelopmental problems. Because of this, the statement that lead in water is never a concern isn’t true. The other statements are correct: lead is a heavy metal that can cause health problems; exposure can occur through old paint and contaminated soil; and lead poisoning can affect cognitive development. Prevention includes testing and replacing lead-containing pipes, using certified filters when appropriate, removing lead paint safely, and monitoring children's blood lead levels if exposure is suspected.