What regulatory body sets limits on lead levels in drinking water?

The Environmental Protection Agency (EPA) is the regulatory body responsible for setting limits on lead levels in drinking water. Under the Safe Drinking Water Act (SDWA), the EPA establishes standards to protect public health by regulating levels of contaminants, including lead, in the nation’s drinking water supply. Lead can enter the water supply through aging plumbing systems and can pose significant health risks, particularly to children and pregnant women. The EPA's regulations ensure that water utilities monitor and manage lead levels, taking necessary actions to reduce exposure and protect consumers.

In contrast, the Food and Drug Administration (FDA) primarily regulates food safety and pharmaceuticals, the Occupational Safety and Health Administration (OSHA) focuses on workplace safety, and the National Institutes of Health (NIH) is involved in medical research and public health but does not set regulatory standards for drinking water. Each of these organizations plays important roles in health and safety but in different contexts than water quality regulation.