Regulatory and Guidance Information By Topic

  • Environmental Laws, Regulations and Guidance

    EPA develops and enforces regulations that span many environmental topics, from acid rain reduction to wetlands restoration. Each topic listed below may include related laws and regulations, compliance and enforcement information, and policies and guidance.

  • Air Topics

    Learn about Criteria Air Pollutants (lead, particulate matter, and others), ozone protection and refrigerants, transportation, engine emissions, and other air-related topics.

  • Cross-cutting Issues

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    Asbestos, lead, EPA Certifications (608, 609, Lead, etc.), Per- and Polyfluoroalkyl Substances (PFAS), and other cross-cutting issues.

  • Emergencies

    Hurricane evacuation sign with flooding shown

    Oil spills, Risk Management Plans (RMP), chemical reporting and other topics.

  • Land and Cleanup Topics

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    Superfund, RCRA corrective actions, underground storage tanks (USTs) and other topics related to land and cleanup.

  • Pesticide Topics

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    Pesticide registration, establishments, worker protection and other pesticide topics.

  • Toxic Substances

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    Polychlorinated Biphenyls (PCBs), chemicals and hazardous substances, Toxic Release Inventory (TRI), and other toxic substance topics.

  • Waste

    Picture of chemical barrels

    Solid waste, hazardous waste and other waste topics.

  • Water

    Boat and waterway with bridge in background

    Drinking water, hydraulic fracturing, mountaintop mining and other water topics.

  • Frequent Questions

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    Review frequent questions about environmental topics or ask a question.

Contact Us about Regulatory Information By Topic to ask a question, provide feedback, or report a problem.
Last updated on January 5, 2026