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

• Clean Air Act
• Clean Water Act
• More Law Summaries

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

• Get Involved
• Reg Development & Review (Reg DaRRT)
• 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 policy and guidance documents to assist the public and regulated entities.

• Significant Guidance Documents
• More guidance resources