Laws written by Congress provide the authority for EPA to write regulations.

• Clean Air Act
• Clean Water Act
• Toxic Substances Control Act
• More Law Summaries

Regulations explain the technical, operational, and legal details necessary to implement laws.

• Get Involved
• Petitions
• Deregulatory Actions
• More about Regulations

EPA helps regulated entities meet federal requirements, and holds entities legally accountable for environmental violations.

• About Compliance
• EPA's Enforcement Website

EPA issues guidance documents to further clarify regulations and to assist in implementation of environmental regulations.

• EPA Guidance Portal
• EPA Final Rulemaking on Guidance Documents