The EPA has a wide range of responsibilities all centered on its core mission of protecting human health and the environment for all Americans. The agency sets and enforces national standards for air quality water quality hazardous waste management and chemical safety across the entire country. EPA develops regulations based on scientific research that establish limits on pollutant emissions waste disposal practices and the use of toxic substances. These regulations apply to industries businesses governments and individuals creating a comprehensive framework for environmental protection nationwide.
Air Quality Protection is one of the EPA’s most important functions as the agency monitors air quality sets emission standards and enforces the Clean Air Act. The EPA establishes National Ambient Air Quality Standards for six major pollutants including particulate matter ozone carbon monoxide nitrogen dioxide sulfur dioxide and lead. The agency requires states to develop plans to achieve and maintain these air quality standards and takes enforcement action when standards are not met. EPA also regulates greenhouse gas emissions from vehicles power plants and industrial sources to address climate change and reduce global warming pollution.
Water Quality Protection is another critical responsibility as EPA enforces the Clean Water Act and Safe Drinking Water Act to keep American water safe. The agency sets limits for over 90 contaminants in drinking water and monitors water systems serving over 300 million Americans across the country. EPA regulates the discharge of pollutants into rivers lakes streams and coastal waters through a permitting system that controls industrial and municipal wastewater. The agency also oversees cleanup of contaminated groundwater and surface water sites to restore water quality in affected communities.
Hazardous Waste Management is a major EPA function including oversight of the Superfund program which cleans up the nation’s most contaminated sites. The EPA identifies sites contaminated with hazardous substances assesses risks to human health and oversees cleanup operations that can cost millions or billions of dollars. The Resource Conservation and Recovery Act gives EPA authority to regulate hazardous waste from generation to disposal ensuring proper handling at every stage. The agency maintains a National Priorities List of the most contaminated sites in America prioritizing cleanup based on risk to human health and the environment.
Chemical Safety and Pesticide Regulation allows EPA to review and regulate chemicals and pesticides before they can be sold or used in the United States. The Toxic Substances Control Act gives the agency authority to require testing of chemicals assess risks and restrict or ban substances that pose unreasonable risks. EPA registers all pesticides used in America setting limits on how they can be applied and establishing safety standards to protect farmworkers and consumers. The agency also responds to chemical emergencies and provides guidance on safe handling and disposal of hazardous substances.