The correct answer to the question is:
1. Clean Water Act
The Clean Water Act specifically regulates the discharges of pollutants into U.S. waters and sets standards for surface waters. It aims to restore and maintain the chemical, physical, and biological integrity of the nation's waters. This act establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
The Safe Drinking Water Act, on the other hand, focuses on the quality of drinking water and not the regulation of discharges into waters. The Environmental Protection Agency (EPA) is the government agency responsible for enforcing environmental regulations like the Clean Water Act. The National Environmental Policy Act deals with the environmental impact assessment process and is not specifically related to regulating pollutants in U.S. waters.
