CDPH Lead Inspector/Assessor California State Practice Exam

What type of dust is considered a lead hazard when found inside a residence?

1. Any household dust

2. Lead dust from lead-contaminated surfaces

3. Dust from vacuuming

4. Construction dust

The correct answer is: Lead dust from lead-contaminated surfaces

Lead dust from lead-contaminated surfaces is specifically recognized as a lead hazard due to its potential to pose significant health risks, especially in child-occupied areas. This type of dust often arises from the deterioration of lead-based paint or from lead-based materials, which may break down over time and generate fine particles that can settle on surfaces within a home. When children or vulnerable individuals come into contact with this lead dust or ingest it inadvertently by touching surfaces and then putting their hands in their mouths, it can lead to serious health issues, including cognitive impairments and developmental problems. Therefore, identifying and addressing lead dust from contaminated sources is critical for safeguarding health within residential environments. The other types of dust mentioned, while they may be a concern for various reasons, do not specifically pose the same risks associated with lead contamination. Household dust may contain numerous substances but does not inherently indicate lead presence. Dust from vacuuming could include a mix of materials but lacks the specifics of being lead-contaminated. Construction dust might introduce other hazardous elements but is not directly related to lead contamination unless it specifically comes from lead-containing materials.