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.

    Find more air 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.

    Discover more cross-cutting issues

  • Emergencies

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

    Explore emergency 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.

    Find more land and cleanup topics

  • Pesticide Topics

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

    Find more pesticide topics

  • Toxic Substances

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

    Find more toxic substance topics

  • Waste

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    Solid waste, hazardous waste and other waste topics.

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  • Water

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

    Find more water topics

  • Frequent Questions

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    Review frequent questions about environmental topics or ask a question.

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Last updated on March 10, 2025