What defines lead-based paint?

Lead-based paint is specifically defined by the measurement of lead content in the paint. In this context, paint qualifies as lead-based if it contains more than 1.0 mg/cm² of lead when tested in dust or more than 0.5% by weight of lead in its composition. This definition is important for establishing safety regulations and guidelines for lead abatement practices.

While any paint applied before 1978 may be presumed to potentially contain lead due to historical usage, it is the specific thresholds provided by option B that legally and scientifically define lead-based paint. The focus on quantifiable measurements is crucial in lead safety assessment and intervention strategies. Moreover, relying solely on the date of application or categorizing paint as industrial does not address the health risks associated with lead exposure, which is why definitions based on lead content are strictly adhered to in regulations.