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About EPA Region 9
Region 9 Main Office
U.S. EPA Region 9
75 Hawthorne Street
San Francisco, CA 94105
Find Region 9 Headquarters in Google Earth
(Requires the Google Earth browser) 
- Contacting us
- Strategic Plan
- Geographic area
- Annual Report
- Regional organization
- Regional Web site
- Visiting the Region 9 main office (San Francisco)
Geographic Area
EPA's Region 9 office works to protect public health and the environment in the southwestern United States (Arizona, California, Nevada, and Hawaii). EPA Region 9 also works with 147 federally recognized tribes in the Pacific Southwest.
Additionally, the regional office's environmental responsibilities extend into the Pacific Ocean well beyond Hawaii. To the west and south of Hawaii are hundreds of islands with an estimated population greater than 300,000, where EPA has an active and direct role. The islands are scattered over an area larger than the 48 contiguous United States. These island jurisdictions consist of the U.S. territories of Guam and American Samoa, the Commonwealth of the Northern Mariana Islands, and other unincorporated U.S. Pacific possessions.
Learn more about EPA's work on environmental issues in the Pacific Southwest in the annual Region 9 Progress Report.
Regional Organization
Region 9's headquarters in San Francisco is organized into three offices:
- Office of the Regional Administrator (ORA) – About Wayne Nastri
- Office of Planning and Public Affairs (OPPA)
- Office of Regional Counsel (ORC)
and six divisions covering major program activities:
- Air Division
- Water Division
- Waste Management Division
- Superfund Division
- Communities and Ecosystems Division (CED)
- Policy and Management Division (PMD)
Learn more about the functions of our offices and divisions by viewing the EPA Region 9 Organization Chart.
The regional office also maintains a laboratory in Richmond, California, and small outreach offices in San Diego and Honolulu. More information about the outreach offices is available on the following Web pages:
- Pacific Islands Contact Office (Honolulu)
- San Diego Border Liaison Office
- Southern California Field Office (Los Angeles)
The Criminal Investigation Division operates within and serves Region 9, but is not part of the Regional Office management structure.
