What is the Maximum Contaminant Level goal for lead in water?

The Maximum Contaminant Level (MCL) goal for lead in drinking water is set at zero, which reflects the understanding that no safe level of lead exposure exists. Lead is a toxic metal that can have harmful effects on human health, particularly in young children and pregnant women. The body does not need lead for any biological processes, hence the determination of an MCL goal of zero.

This goal is grounded in health studies that have demonstrated the detrimental effects of lead on neurodevelopment in children, as well as other serious health consequences for adults. By establishing an MCL goal of zero for lead, regulatory agencies aim to promote the highest possible standards for safe drinking water, thereby minimizing any risk associated with lead exposure.

Other options reflect numerical values that do not represent an acceptable limit for lead, as any level of lead in drinking water is considered hazardous.