EPA Lead Risk Assessor Practice Exam – Prep, Practice Test & Study Guide

Lead-based paint, plumbing pipes, and soil are materials in older buildings that may contain lead due to historical usage practices. Lead-based paint was commonly used in homes built before 1978, when it was banned for residential use because of its health hazards, particularly to children. When this paint deteriorates, it can create lead dust and lead chips, posing serious health risks.

Plumbing pipes, especially those made before the 1980s, often contained lead solder, which can leach lead into the drinking water supply. The exposure to lead via water can be particularly harmful, as it is often ingested without one realizing the potential danger.

Additionally, soil around homes built in older urban areas can be contaminated with lead dust from paint or from other sources such as historical use of leaded gasoline. Thus, all three components mentioned in the correct answer (lead-based paint, plumbing pipes, and soil) are significant sources of lead exposure in older buildings, highlighting the importance of assessing these materials during lead risk assessments.