Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

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In terms of lead exposure, why is it significant to know the year a house was built?

Older homes are typically safer
Lead-based paint is more common in homes built before 1978
Newer homes are more likely to contain lead
Only homes built before 1940 have lead

The correct answer is: Lead-based paint is more common in homes built before 1978

The significance of knowing the year a house was built lies primarily in the prevalence of lead-based paint and its regulation history. Homes constructed before 1978 are particularly important because that year marks the ban on the residential use of lead-based paint in the United States. It is during this period, especially in homes built prior to the late 1970s, that lead-based paint was widely used. Understanding this timeline helps assess the potential for lead exposure in a home. Older homes present a higher risk for lead exposure due to the likelihood that they contain lead-based paints, which can deteriorate over time, releasing lead dust and chips that are hazardous, particularly to children. This insight serves as a crucial aspect in conducting lead risk assessments and implementing necessary interventions in these older properties to safeguard public health, particularly among vulnerable populations such as young children and pregnant women.