Which organization controls the quality requirements for water to be classified as potable in the U.S.?

The Environmental Protection Agency (EPA) is responsible for setting the standards and regulations that dictate the quality of drinking water in the United States. It establishes the criteria for which contaminants are considered safe in potable water and ensures that these standards are met to protect public health.

The EPA enforces the Safe Drinking Water Act, which outlines the maximum contaminant levels for various substances in drinking water. This agency conducts research, provides technical assistance, and oversees the compliance of public water systems with these established standards. Therefore, the role of the EPA is crucial in determining and maintaining the quality of drinking water across the country, ensuring that it is safe for human consumption.