Libraries
  Public visitors: Please call ahead to ensure a librarian is available.
Repository Libraries
Collecting and preserving EPA documents and other materials deemed of value to the EPA National Library Network.
- Headquarters Repository, Washington, DC
 - Research Triangle Park, NC Library Services
 - Andrew W. Breidenbach Environmental Research Center Library, Cincinnati, OH
 
Regional Libraries
Located in one of EPA's ten regions and supporting patrons in their region of the country.
- Region 1 Library, Boston, MA
 - Region 2 Library, New York, NY
 - Region 3 Library, Philadelphia, PA
 - Region 4 Library, Atlanta, GA
 - Region 5 Library, Chicago, IL (Closed)
 - Region 6 Library, Dallas, TX
 - Region 7 Library, Kansas City, KS
 - Region 8 Technical Library, Denver, CO (Closed)
 - Region 9 Environmental Information Center/Library, San Francisco, CA
 - Region 10 Library, Seattle, WA
 
Additional Sources
Research Laboratory Libraries
Located in EPA's environmental Research Laboratory locations and providing specialized support and collections for their location or research subjects.
- CEMM - Atlantic Coastal Environmental Sciences Division Library, Narragansett, RI
 - CEMM - Gulf Ecosystem Measurement and Modeling Division Library, Gulf Breeze, FL (Closed)
 - CCTE - Great Lakes Toxicology and Ecology Division Library, Duluth, MN
 - CPHEA - Pacific Ecological Systems Division Library, Corvallis, OR
 - CESER - Groundwater Characterization & Remediation Division Library, Ada, OK (Closed)
 - National Vehicle & Fuel Emissions Laboratory Library, Ann Arbor, MI
 
Specialty Libraries
Providing specialized services or collections for a specific office, location, or topic.