How often should lead testing be conducted in areas where children frequently play?

Lead testing in areas where children frequently play should be conducted every year due to the significant health risks associated with lead exposure. Children are particularly vulnerable to lead poisoning, which can cause severe developmental issues and health problems. Regular testing helps ensure that any lead hazards are identified and remediated in a timely manner.

Annual testing aligns with best practices aimed at safeguarding children's health, especially in environments like playgrounds or schools, where they spend a considerable amount of time. This proactive approach allows for swift action if lead is detected, reducing potential long-term health consequences for children.

The other options suggest longer intervals for testing or only testing in response to complaints, which can delay necessary safety measures and increase the risk of lead exposure for children.