Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

What is considered the largest source of Lead Hazards in a dwelling?

1. Old plumbing

2. Lead-based paint

3. Soil contamination

4. House dust

The correct answer is: Lead-based paint

The largest source of lead hazards in a dwelling is lead-based paint. This is primarily due to the prevalence of lead-containing paint used in homes built before 1978 when the United States banned the use of lead-based paints in residential properties. When the paint deteriorates, it can chip or create dust that is easily ingested or inhaled, posing significant health risks, especially to children. Lead-based paint hazards can be found on walls, door frames, and other surfaces, and the exposure it causes is a major concern for public health agencies, including the EPA. Efforts to mitigate risks associated with lead exposure often focus on identifying and safely removing or encapsulating lead-based paint to protect occupants, particularly young children who are more vulnerable to lead poisoning. While options like old plumbing, soil contamination, and house dust can also be sources of lead exposure, lead-based paint is the most common and significant hazard in residential environments, making it the primary concern when assessing lead risks in homes.