An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Environmental Topics

Find the most popular pages in your topic of interest, or search the A-Z index for specific terms.

  • Air:
    • pollution and your impact
    • indoor air issues like asbestos
    • air quality research and data
    • emissions, greenhouse gases
  • Chemicals and Toxics
    • formaldehyde, mercury, other substances
    • how EPA handles spills
    • safer chemicals, TSCA
    • databases such as IRIS and SRS
  • Location-Specific Information:
    • conditions in your state or community
    • nearby facilities or cleanup sites
  • Greener Living:
    • sustainable energy
    • transportation choices
    • food waste and recycling
    • home and business
  • Health:
    • effects of common pollutants
    • risk and exposure studies
    • asthma, children in school buildings
  • Land, Waste, and Cleanup:
    • landfills
    • hazardous waste
    • plastic and waterways
    • superfund, cleanups
  • Science:
    • methods, modeling, data and tools
    • research grants and opportunities
  • Water:
    • drinking water quality
    • watersheds and rivers
    • wastewater, stormwater, runoff
    • infrastructure finance and resilience