Which regulatory body is responsible for overseeing drinking water standards in the US?

The Environmental Protection Agency (EPA) is the regulatory body responsible for overseeing drinking water standards in the United States. This agency establishes and enforces regulations to ensure that public drinking water systems provide safe and clean water for consumption. The EPA sets maximum contaminant levels (MCLs) for various pollutants in drinking water, ensuring that they are within safe limits to protect public health.

In addition to developing regulations, the EPA also monitors water quality, provides guidance and support to states in administering drinking water programs, and conducts research to improve drinking water standards. Their role is critical in maintaining public health, considering the potential health risks associated with contaminated water.

While other agencies such as the Centers for Disease Control and Prevention, USDA, and National Institutes of Health have roles related to public health and safety, none are primarily designated to regulate drinking water standards like the EPA. This makes the Environmental Protection Agency the correct answer for the oversight of drinking water standards in the U.S.